One document matched: draft-ietf-vcarddav-vcardrev-19.xml


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<rfc ipr="pre5378Trust200902" docName="draft-ietf-vcarddav-vcardrev-19" category="std"
    obsoletes="2425, 2426, 4770"
    updates="2739">

<front>
  <title abbrev="vCard">vCard Format Specification</title>
        <author initials="S." surname="Perreault" fullname="Simon Perreault">
            <organization>Viagénie</organization>
             <address>
                 <postal>
                     <street>2875 Laurier, suite D2-630</street>
                     <city>Québec</city>
                     <region>QC</region>
                     <code>G1V 2M2</code>
                     <country>Canada</country>
                 </postal>
                 <phone>+1 418 656 9254</phone>
                 <email>simon.perreault@viagenie.ca</email>
                 <uri>http://www.viagenie.ca</uri>
            </address>
      </author>
  <date year="2011"/>
  <area>Applications</area>
  <keyword>vcard</keyword>
  <abstract>
  <t>
    This document defines the vCard data format for representing and exchanging
    a variety of information about individuals and other entities (e.g.,
    formatted and structured name and delivery addresses, email address,
    multiple telephone numbers, photograph, logo, audio clips, etc.). This
    document obsoletes RFCs 2425, 2426, 2739, and 4770.
  </t>
  </abstract>
</front>

<middle>
    
<section title="Introduction">
  <t>Electronic address books have become ubiquitous. Their increased presence
    on portable, connected devices as well as the diversity of platforms
    exchanging contact data call for a standard. This memo defines the vCard
    format, which allows the capture and exchange of information normally stored
    within an address book or directory
    application.</t>
</section>

<section title="Conventions" anchor="oldsection_Abstract">
  <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
    "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
    "OPTIONAL" in this document are to be interpreted as described in <xref
      target="RFC2119"/>.</t>
</section>

<section title="vCard Format Specification">

  <t>The text/vcard MIME content type (hereafter known as "vCard", see <xref
      target="mime_type_registration"/>) contains
    contact information, typically pertaining to a single contact or group of
    contacts.  The content consists of one or more lines in the format given
    below.</t>

  <section title="Character Set">
    <t>The character set for vCard is UTF-8 as defined in <xref
        target="RFC3629"/>. There is no way to override this. It is invalid to
      specify a different character set in the "charset" MIME parameter (see
      <xref target="mime_type_registration"/>).</t>
  </section>

  <section title="Line Delimiting and Folding" anchor="folding">

    <t>Individual lines within vCard are delimited by the <xref
        target="RFC5322"/> line break, which is a CRLF sequence (ASCII decimal
      13, followed by ASCII decimal 10). Long logical lines of text can be split
      into a multiple-physical-line representation using the following folding
      technique. Content lines SHOULD be folded to a maximum width of 75 octets,
      excluding the line break.  Multi-octet characters MUST remain contiguous.
      The rationale for this folding process can be found in <xref
        target="RFC5322"/>, Section 2.1.1.</t>

    <t>A logical line MAY be continued on the next physical line anywhere
      between two characters by inserting a CRLF immediately followed by a
      single white space character (space (ASCII decimal 32) or horizontal tab,
      (ASCII decimal 9)). The folded line MUST contain at least one character. Any
      sequence of CRLF followed immediately by a single white space character is
      ignored (removed) when processing the content type.  For example the
      line:</t>
    <figure><artwork>
  NOTE:This is a long description that exists on a long line.
    </artwork></figure>
    <figure>
      <preamble>can be represented as:</preamble>
      <artwork>
  NOTE:This is a long description
    that exists on a long line.
      </artwork>
    </figure>
    <figure>
      <preamble>It could also be represented as:</preamble>
      <artwork>
  NOTE:This is a long descrip
   tion that exists o
   n a long line.
      </artwork>
    </figure>

    <t>The process of moving from this folded multiple-line representation of a
      property definition to its single line representation is called unfolding.
      Unfolding is accomplished by regarding CRLF immediately followed by a
      white space character (namely HTAB ASCII decimal 9 or SPACE ASCII decimal
      32) as equivalent to no characters at all (i.e., the CRLF and single white
      space character are removed).
      <list>
        <t>Note: It is possible for very simple implementations to generate
          improperly folded lines in the middle of a UTF-8 multi-octet sequence.
          For this reason, implementations SHOULD unfold lines in such a way as
          to properly restore the original sequence.</t>
        <t>Note: Unfolding is done differently than in <xref target="RFC5322"/>.
          Unfolding in <xref target="RFC5322"/> only removes the CRLF, not the
          space following it.</t>
      </list>
    </t>


    <t>Folding is done after any content encoding of a type value. Unfolding is
      done before any decoding of a type value in a content line.</t>

  </section>

  <section title="ABNF Format Definition">

    <t>The following ABNF uses the notation of <xref target="RFC5234"/>, which
      also defines CRLF, WSP, DQUOTE, VCHAR, ALPHA, and DIGIT.</t>

    <figure>
      <artwork>
  vcard-entity = 1*vcard

  vcard = "BEGIN:VCARD" CRLF
          "VERSION:4.0" CRLF
          1*contentline
          "END:VCARD" CRLF
    ; A vCard object MUST include the VERSION and FN properties.
    ; VERSION MUST come immediately after BEGIN:VCARD.

  contentline = [group "."] name *(";" param) ":" value CRLF
    ; When parsing a content line, folded lines must first
    ; be unfolded according to the unfolding procedure
    ; described above.
    ; When generating a content line, lines longer than 75
    ; characters SHOULD be folded according to the folding
    ; procedure described above.

  group = 1*(ALPHA / DIGIT / "-")
  name  = "SOURCE" / "KIND" / "FN" / "N" / "NICKNAME"
        / "PHOTO" / "BDAY" / "ANNIVERSARY" / "GENDER" / "ADR" / "TEL"
        / "EMAIL" / "IMPP" / "LANG" / "TZ" / "GEO" / "TITLE" / "ROLE"
        / "LOGO" / "ORG" / "MEMBER" / "RELATED" / "CATEGORIES"
        / "NOTE" / "PRODID" / "REV" / "SOUND" / "UID" / "CLIENTPIDMAP"
        / "URL" / "KEY" / "FBURL" / "CALADRURI" / "CALURI" / "XML"
        / iana-token / x-name
    ; Parsing of the param and value is based on the "name" as
    ; defined in ABNF sections below.
    ; Group and name are case-insensitive.

  iana-token = 1*(ALPHA / DIGIT / "-")
    ; identifier registered with IANA

  x-name = "x-" 1*(ALPHA / DIGIT / "-")
    ; Names that begin with "x-" or "X-" are
    ; reserved for experimental use, not intended for released
    ; products, or for use in bilateral agreements.

  param = language-param / value-param / pref-param / pid-param
        / type-param / geo-parameter / tz-parameter / sort-as-param
        / calscale-param / any-param
    ; Allowed parameters depend on property name.

  param-value = *SAFE-CHAR / DQUOTE *QSAFE-CHAR DQUOTE

  any-param  = (iana-token / x-name) "=" param-value *("," param-value)

  NON-ASCII = %x80-FF
    ; Use is restricted by UTF-8

  QSAFE-CHAR = WSP / "!" / %x23-7E / NON-ASCII
    ; Any character except CTLs, DQUOTE

  SAFE-CHAR = WSP / "!" / %x23-39 / %x3C-7E / NON-ASCII
    ; Any character except CTLs, DQUOTE, ";", ":"

  VALUE-CHAR = WSP / VCHAR / NON-ASCII
    ; Any textual character
      </artwork>
    </figure>

    <t>A line that begins with a white space character is a continuation of the
      previous line, as described above. The white space character and
      immediately preceeding CRLF should be discarded when reconstructing the
      original line. Note that this line-folding convention differs from that
      found in <xref target="RFC5322"/>, in that the sequence
      <CRLF><WSP> found anywhere in the content indicates a
      continued line and should be removed.</t>

    <t>Property names and parameter names are case insensitive (e.g., the
      property name "fn" is the same as "FN" and "Fn"). Parameter values MAY be
      case sensitive or case insensitive, depending on their definition. Based
      on experience with vCard 3 interoperability, it is RECOMMENDED that
      property and parameter names be upper-case on output.</t>

    <t>The group construct is used to group related properties together. The
      group name is a syntactic convention used to indicate that all property
      names prefaced with the same group name SHOULD be grouped together when
      displayed by an application. It has no other significance.
      Implementations that do not understand or support grouping MAY simply
      strip off any text before a "." to the left of the type name and present
      the types and values as normal.</t>

  <t>Property cardinalities are indicated using the following notation, which is
    based on ABNF (see <xref target="RFC5234"/>, section 3.6):</t>
  <texttable>
    <ttcol align="center">Cardinality</ttcol>
    <ttcol align="left">Meaning</ttcol>

    <c>1</c>
    <c>Exactly one instance per vCard MUST be present.</c>

    <c>*1</c>
    <c>Exactly one instance per vCard MAY be present.</c>

    <c>1*</c>
    <c>One or more instances per vCard MUST be present.</c>

    <c>*</c>
    <c>One or more instances per vCard MAY be present.</c>
  </texttable>

    <t>Properties defined in a vCard instance may have multiple values depending
      on the property cardinality. The general rule for encoding multi-valued
      properties is to simply create a new content line for each value
      (including the property name).  However, it should be noted that some
      value types support encoding multiple values in a single content line by
      separating the values with a comma ",".  This approach has been taken for
      several of the content types defined below (date, time, integer,
      float).</t>

  </section>

  <section title="Property Value Escaping">
    <t>Some properties may contain one or more values delimited by a COMMA
      character (ASCII decimal 44). Therefore, a COMMA character in a value MUST
      be escaped with a BACKSLASH character (ASCII decimal 92), even for
      properties that don't allow multiple instances (for consistency).</t>

    <t>Some properties (e.g. N and ADR) comprise multiple fields delimited by a
      SEMI-COLON character (ASCII decimal 59). Therefore, a SEMI-COLON in a
      field of such a "compound" property MUST be escaped with a BACKSLASH
      character. SEMI-COLON characters in non-compound properties MAY be
      escaped. On input, an escaped SEMI-COLON character is never a field
      separator. An unescaped SEMI-COLON character may be a field
      separator, depending on the property in which it appears.</t>

    <t>Furthermore, some fields of compound properties may contain a list of
      values delimited by a COMMA character. Therefore, a COMMA character in one
      of a field's values MUST be escaped with a BACKSLASH character, even for
      fields that don't allow multiple values (for consistency). Compound
      properties allowing multiple instances MUST NOT be encoded in a single
      content line.</t>

    <t>Finally, BACKSLASH characters in values MUST be escaped with a BACKSLASH
      character. NEWLINE (ASCII decimal 10) characters in values MUST be encoded
      by two characters: a BACKSLASH followed by an 'n' (ASCII decimal 110).</t>

    <t>In all other cases, escaping MUST NOT be used.</t>
  </section>

</section>

<section title="Property Value Data Types">

  <t>Standard value types are defined below.</t>

  <figure>
    <artwork>
  value = text
        / text-list
        / date-list
        / time-list
        / date-time-list
        / date-and-or-time-list
        / timestamp-list
        / boolean
        / integer-list
        / float-list
        / URI               ; from Section 3 of [RFC3986]
        / iana-valuespec
    ; Actual value type depends on property name and VALUE parameter.

  text = *TEXT-CHAR

  TEXT-CHAR = "\\" / "\," / "\n"
            / <any VALUE-CHAR except , or \>
     ; Backslashes, commas, and newlines must be encoded.

  component = "\\" / "\," / "\;" / "\n" / WSP / NON-ASCII
            / %x21-2B / %x2D-3A / %x3C-5B / %x5D-7E
  list-component = component *("," component)

  text-list             = text             *("," text) 
  date-list             = date             *("," date)
  time-list             = time             *("," time)
  date-time-list        = date-time        *("," date-time)
  date-and-or-time-list = date-and-or-time *("," date-and-or-time)
  timestamp-list        = timestamp        *("," timestamp)
  integer-list          = integer          *("," integer)
  float-list            = float            *("," float)

  boolean = "TRUE" / "FALSE"
  integer = [sign] 1*DIGIT
  float   = [sign] 1*DIGIT ["." 1*DIGIT]

  sign = "+" / "-"

  year   = 4DIGIT  ; 0000-9999
  month  = 2DIGIT  ; 01-12
  day    = 2DIGIT  ; 01-28/29/30/31 depending on month and leap year
  hour   = 2DIGIT  ; 00-23
  minute = 2DIGIT  ; 00-59
  second = 2DIGIT  ; 00-58/59/60 depending on leap second
  zone   = utc-designator / utc-offset
  utc-designator = %x5A  ; uppercase "Z"

  date          = year    [month  day]
                / year "-" month
                / "--"     month [day]
                / "--"      "-"   day
  date-noreduc  = year     month  day
                / "--"     month  day
                / "--"      "-"   day
  date-complete = year     month  day

  time          = hour [minute [second]] [zone]
                /  "-"  minute [second]  [zone]
                /  "-"   "-"    second   [zone]
  time-notrunc  = hour [minute [second]] [zone]
  time-complete = hour  minute  second   [zone]

  time-designator = %x54  ; uppercase "T"
  date-time = date-noreduc  time-designator time-notrunc
  timestamp = date-complete time-designator time-complete

  date-and-or-time = date-time / date / time-designator time

  utc-offset = sign hour [minute]

  Language-Tag = <Language-Tag, defined in [RFC5646], Section 2.1>

  iana-valuespec = <value-spec, see Section 12>
                 ; a publicly-defined valuetype format, registered
                 ; with IANA, as defined in section 12 of this
                 ; document
    </artwork>
  </figure><!-- TODO: update ref -->

  <section title="TEXT" anchor="TEXT">
    <t>"text": The "text" value type should be used to identify values that
      contain human-readable text. As for the language, it is controlled by the
      LANGUAGE property parameter defined in <xref target="LANGUAGE"/>.</t>

    <figure>
      <preamble>Examples for "text":</preamble>
      <artwork>
    this is a text value
    this is one value,this is another
    this is a single value\, with a comma encoded
      </artwork>
    </figure>

    <t>A formatted text line break in a text value type MUST be represented as
      the character sequence backslash (ASCII decimal 92) followed by a Latin
      small letter n (ASCII decimal 110) or a Latin capital letter N (ASCII
      decimal 78), that is "\n" or "\N".</t>

    <figure>
      <preamble>For example a multiple line NOTE value of:</preamble>
      <artwork>
    Mythical Manager
    Hyjinx Software Division
    BabsCo, Inc.
      </artwork>
    </figure>

    <figure>
      <preamble>could be represented as:</preamble>
      <artwork>
    NOTE:Mythical Manager\nHyjinx Software Division\n
     BabsCo\, Inc.\n
      </artwork>
      <postamble>demonstrating the \n literal formatted line break technique,
        the CRLF-followed-by-space line folding technique, and the backslash
        escape technique.</postamble>
    </figure>
  </section>
    
  <section title="URI" anchor="URI">
    <t>"uri": The "uri" value type should be used to identify values that are
      referenced by a URI (including a Content-ID URI), instead of encoded
      in-line. These value references might be used if the value is too large,
      or otherwise undesirable to include directly. The format for the URI is as
      defined in Section 3 of <xref target="RFC3986"/>. Note that the value of a
      property of type "uri" is what the URI points to, not the URI itself.</t>

    <figure>
      <preamble>Examples for "uri":</preamble>
      <artwork>
    http://www.example.com/my/picture.jpg
    ldap://ldap.example.com/cn=babs%20jensen
      </artwork>
    </figure>
  </section>

  <section title="DATE, TIME, DATE-TIME, DATE-AND-OR-TIME, and TIMESTAMP">
    <t>"date", "time", "date-time", and "timestamp": Each of these value types
      is based on the definitions in <xref target="ISO.8601.2004"/> standard.
      Multiple such values can be specified using the comma-separated
      notation.</t>

    <t>Only the basic format is supported.</t>

    <section title="DATE" anchor="DATE">
      <t>A calendar date as specified in <xref target="ISO.8601.2004"/> section
        4.1.2.</t>
      <t>Reduced accuracy, as specified in <xref target="ISO.8601.2004"/>
        sections 4.1.2.3 a) and b), but not c), is permitted.</t>
      <t>Expanded representation, as specified in <xref target="ISO.8601.2004"/>
        section 4.1.4, is forbidden.</t>
      <t>Truncated representation, as specified in <xref target="ISO.8601.2000"/>
        sections 5.2.1.3 d), e), and f), is permitted.</t>
      <figure>
        <preamble>Examples for "date":</preamble>
        <artwork>
          19850412
          1985-04
          1985
          --0412
          ---12
        </artwork>
      </figure>
      <t>Note the use of YYYY-MM in the second example above. YYYYMM is
        disallowed to prevent confusion with YYMMDD. Note also that YYYY-MM-DD
        is disallowed since we are using the basic format instead of the
        extended format.</t>
    </section>

    <section title="TIME" anchor="TIME">
      <t>A time of day as specified in <xref target="ISO.8601.2004"/> section
        4.2.</t>
      <t>Reduced accuracy, as specified in <xref target="ISO.8601.2004"/>
        section 4.2.2.3, is permitted.</t>
      <t>Representation with decimal fraction, as specified in <xref
          target="ISO.8601.2004"/> section 4.2.2.4, is forbidden.</t>
      <t>The midnight hour is always represented by 00, never 24 (see <xref
          target="ISO.8601.2004"/> section 4.2.3).</t>
      <t>Truncated representation, as specified in <xref
          target="ISO.8601.2000"/> sections 5.3.1.4 a), b), and c), is
        permitted.</t>
      <figure>
        <preamble>Examples for "time":</preamble>
        <artwork>
          102200
          1022
          10
          -2200
          --00
          102200Z
          102200-0800
        </artwork>
      </figure>
    </section>

    <section title="DATE-TIME" anchor="DATE_TIME">
      <t>A date and time of day combination as specified in <xref
          target="ISO.8601.2004"/> section 4.3.</t>
      <t>Truncation of the date part, as specified in <xref
          target="ISO.8601.2000"/> section 5.4.2 c), is permitted.</t>
      <figure>
        <preamble>Examples for "date-time":</preamble>
        <artwork>
          19961022T140000
          --1022T1400
          ---22T14
        </artwork>
      </figure>
    </section>

    <section title="DATE-AND-OR-TIME" anchor="DATE_AND_OR_TIME">
      <t>Either a DATE-TIME, a DATE, or a TIME value. To allow unambiguous
        interpretation, a standalone TIME value is always preceded by a "T".</t>
      <figure>
        <preamble>Examples for "date-and-or-time":</preamble>
        <artwork>
          19961022T140000
          --1022T1400
          ---22T14
          19850412
          1985-04
          1985
          --0412
          ---12
          T102200
          T1022
          T10
          T-2200
          T--00
          T102200Z
          T102200-0800
        </artwork>
      </figure>
    </section>

    <section title="TIMESTAMP" anchor="TIMESTAMP">
      <t>A complete date and time of day combination as specified in <xref
          target="ISO.8601.2004"/> section 4.3.2.</t>
      <figure>
        <preamble>Examples for "timestamp":</preamble>
        <artwork>
          19961022T140000
          19961022T140000Z
          19961022T140000-05
          19961022T140000-0500
        </artwork>
      </figure>
    </section>
  </section>

  <section title="BOOLEAN" anchor="BOOLEAN">
    <t>"boolean": The "boolean" value type is used to express boolean values.
      These values are case insensitive.</t>

    <figure>
      <preamble>Examples:</preamble>
      <artwork>
    TRUE
    false
    True
      </artwork>
    </figure>
  </section>

  <section title="INTEGER" anchor="INTEGER">
    <t>"integer": The "integer" value type is used to express signed integers in
      decimal format. If sign is not specified, the value is assumed positive
      "+". Multiple "integer" values can be specified using the comma-separated
      notation.</t>

    <figure>
      <preamble>Examples:</preamble>
      <artwork>
    1234567890
    -1234556790
    +1234556790,432109876
      </artwork>
    </figure>
  </section>

  <section title="FLOAT" anchor="FLOAT">
    <t>"float": The "float" value type is used to express real numbers.  If sign
      is not specified, the value is assumed positive "+". Multiple "float"
      values can be specified using the comma-separated notation.
      <list>
        <t>Note: Scientific notation is disallowed. Implementors wishing to use
          their favorite language's %f formatting should be careful.</t>
      </list>
    </t>

    <figure>
      <preamble>Examples:</preamble>
      <artwork>
    20.30
    1000000.0000001
    1.333,3.14
      </artwork>
    </figure>
  </section>

  <section title="LANGUAGE-TAG" anchor="LANGUAGE-TAG">
    <t>"language-tag": A single language tag, as defined in <xref
        target="RFC5646"/>.</t>
  </section>

</section>

<section title="Property Parameters" anchor="parameters">

  <t>A property can have attributes associated with it.  These "property
    parameters" contain meta-information about the property or the property
    value. In some cases the property parameter can be multi-valued in which
    case the property parameter value elements are separated by a COMMA
    (US-ASCII decimal 44).</t> 

  <t>Property parameter value elements that contain the COLON (US-ASCII decimal 58),
    SEMICOLON (US-ASCII decimal 59) or COMMA (US-ASCII decimal 44) character
    separators MUST be specified as quoted-string text values.  Property
    parameter values MUST NOT contain the DQUOTE (US-ASCII decimal 34)
    character.  The DQUOTE character is used as a delimiter for parameter values
    that contain restricted characters or URI text.</t>

  <t>Applications MUST ignore x-param and iana-param values they don't
    recognize.</t>

  <section title="LANGUAGE" anchor="LANGUAGE">
    <t>The LANGUAGE property parameter is used to identify data in multiple
      languages.  There is no concept of "default" language, except as specified
      by any "Content-Language" MIME header parameter that is present <xref
        target="RFC3282"/>.  The value of the LANGUAGE property parameter is a
      language tag as defined in Section 2 of <xref target="RFC5646"/>.</t>
    <figure>
      <preamble>Examples:</preamble>
      <artwork>
  ROLE;LANGUAGE=tr:hoca
      </artwork>
    </figure>
    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
        language-param = "LANGUAGE=" Language-Tag
          ; Language-Tag is defined in section 2.1 of RFC 5646
      </artwork>
    </figure>
  </section>

  <section title="VALUE" anchor="VALUE">
    <t>The VALUE parameter is optional, used to identify the value type
      (data type) and format of the value.  The use of these predefined formats
      is encouraged even if the value parameter is not explicitly used.  By
      defining a standard set of value types and their formats, existing parsing
      and processing code can be leveraged. The predefined data type values MUST
      NOT be repeated in COMMA separated value lists except within the N,
      NICKNAME, ADR, and CATEGORIES properties.</t>

    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
  value-param = "VALUE=" value-type

  value-type = "text"
             / "uri"
             / "date"
             / "time"
             / "date-time"
             / "timestamp"
             / "boolean"
             / "integer"
             / "float"
             / "language-tag"
             / "utc-offset"
             / iana-token  ; registered as described in section 12
             / x-name
      </artwork>
    </figure>
  </section>

  <section title="PREF" anchor="PREF">
    <t>The PREF parameter is optional and is used to indicate that the
      corresponding instance of a property is preferred by the vCard author. Its
      value MUST be an integer between 1 and 100 that quantifies the level of
      preference. Lower values correspond to a higher level of
      preference, 1 being most preferred.</t>
    <t>When the parameter is absent, the default MUST be to interpret the
      property instance as being least preferred.</t>
    <t>Note that the value of this parameter is to be interpreted only in
      relation to values assigned to other instances of the same property in the
      same vCard. A given value, or the absence of a value, MUST NOT be
      interpreted on its own.</t>
    <t>This parameter MAY be applied to any property that allows multiple
      instances.</t>
    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
        pref-param = "PREF=" (1*2DIGIT / "100")
                             ; An integer between 1 and 100.
      </artwork>
    </figure>
  </section>

  <section title="ALTID" anchor="ALTID">
    <t>The ALTID parameter is used to "tag" property instances as being
      alternative representations of the same logical property. For example,
      translations of a property in multiple languages generates multiple
      property instances having different LANGUAGE (<xref target="LANGUAGE"/>)
      parameter which are tagged with the same ALTID value.</t>
    <t>This parameter's value is treated as an opaque string. Its sole purpose
      is to be compared for equality against other ALTID parameter values.</t>
    <t>Two property instances are considered alternative representations of the
      same logical property if and only if their names as well as the value of
      their ALTID parameters are identical. Property instances without the ALTID
      parameter MUST NOT be considered an alternative representation of any
      other property instance. Values for the ALTID parameter are not globally
      unique: they MAY be reused for different property names.</t>
    <t>Property instances having the same ALTID parameter value count as 1
      toward cardinality. Therefore, since N (<xref target="N"/>) has
      cardinality *1 and TITLE (<xref target="TITLE"/>) has cardinality
      *, these three examples would be legal:</t>
    <figure>
      <artwork>
  N;ALTID=1;LANGUAGE=jp:<U+5C71><U+7530>;<U+592A><U+90CE>;;;
  N;ALTID=1;LANGUAGE=en:Yamada;Taro;;;
  (<U+XXXX> denotes a UTF8-encoded Unicode character.)

  TITLE;ALTID=1;LANGUAGE=fr:Patron
  TITLE;ALTID=1;LANGUAGE=en:Boss

  TITLE;ALTID=1;LANGUAGE=fr:Patron
  TITLE;ALTID=1;LANGUAGE=en:Boss
  TITLE;ALTID=2;LANGUAGE=en:Chief vCard Evangelist
      </artwork>
    </figure>
    <t>while this one would not:</t>
    <figure>
      <artwork>
  N;ALTID=1;LANGUAGE=jp:<U+5C71><U+7530>;<U+592A><U+90CE>;;;
  N:Yamada;Taro;;;
  (Two instances of the N property.)
      </artwork>
    </figure>
    <t>and these three would be legal but questionable:</t>
    <figure>
      <artwork>
  TITLE;ALTID=1;LANGUAGE=fr:Patron
  TITLE;ALTID=2;LANGUAGE=en:Boss
  (Should probably have the same ALTID value.)

  TITLE;ALTID=1;LANGUAGE=fr:Patron
  TITLE:LANGUAGE=en:Boss
  (Second line should probably have ALTID=1.)

  N;ALTID=1;LANGUAGE=jp:<U+5C71><U+7530>;<U+592A><U+90CE>;;;
  N;ALTID=1;LANGUAGE=en:Yamada;Taro;;;
  N;ALTID=1;LANGUAGE=en:Smith;John;;;
  (The last line should probably have ALTID=2. But that would be
   illegal because N has cardinality *1.)
      </artwork>
    </figure>
    <t>The ALTID property MAY also be used in may contexts other than with the
      LANGUAGE parameter. Here's an example with two representations of the same
      photo in different file formats:</t>
    <figure>
      <artwork>
  PHOTO;ALTID=1:data:image/jpeg;base64,...
  PHOTO;ALTID=1;data:image/jp2;base64,...
      </artwork>
    </figure>
    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
        altid-param = "ALTID=" param-value
      </artwork>
    </figure>
  </section>

  <section title="PID" anchor="PID">
    <t>The PID parameter is used to identify a specific property among
      multiple instances. It plays a role analogous to the UID property (<xref
        target="UID"/>) on a per-property instead of per-vCard basis. It MAY
      appear more than once in a given property. It MUST NOT appear on
      properties that may have only one instance per vCard.  Its value is either
      a single small positive integer or a pair of small positive integers
      separated by a dot.  Multiple values may be encoded in a single PID
      parameter by separating the values with a comma ",". See <xref
        target="synchronization"/> for more details on its usage.</t>
    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
        pid-param = "PID=" pid-value *("," pid-value)
        pid-value = 1*DIGIT ["." 1*DIGIT]
      </artwork>
    </figure>
  </section>

  <section title="TYPE" anchor="TYPE">
    <t>The TYPE parameter has multiple, different uses. In general, it is a
      way of specifying class characteristics of the associated property. Most
      of the time, its value is a comma-separated subset of a pre-defined
      enumeration. In this document, the following properties make use of this
      parameter: FN, NICKNAME, PHOTO, ADR, TEL, EMAIL, IMPP, LANG, TZ,
      GEO, TITLE, ROLE, LOGO, ORG, RELATED, CATEGORIES, NOTE, SOUND, URL, KEY,
      FBURL, CALADRURI, and CALURI. The TYPE parameter MUST NOT be
      applied on other properties defined in this document.</t>
    <t>The "work" and "home" values act like tags. The "work" value implies that
      the property is related to an individual's work place, while the "home"
      value implies that the property is related to an individual's personal
      life.  When neither "work" nor "home" is present, it is implied that the
      property is related to both an individual's work place and personal life
      in the case that the KIND property's value is "individual", or to none in
      other cases.</t>
    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
        type-param = "TYPE=" type-value *("," type-value)

        type-value = "work" / "home" / type-param-tel
                   / type-param-related / iana-token / x-name
          ; This is further defined in individual property sections.
      </artwork>
    </figure>
  </section>

  <section title="MEDIATYPE" anchor="MEDIATYPE">
    <t>The MEDIATYPE parameter is used with properties whose value is a URI. Its
      use is OPTIONAL. It provides a hint to the vCard consumer application
      about the media type of the resource identified by the URI. Some URI
      schemes do not need this parameter. For example, the "data" scheme allows
      the media type to be explicitly indicated as part of the URI <xref
        target="RFC2397"/>. Another scheme, "http", provides the media type as
      part of the URI resolution process, with the Content-Type HTTP header
      <xref target="RFC2616"/>. The MEDIATYPE parameter is intended to be used
      with URI schemes that do not provide such functionality (e.g. "ftp" <xref
        target="RFC1738"/>).</t>
    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
  mediatype-param = "MEDIATYPE=" mediatype
  mediatype = type-name "/" subtype-name *( ";" attribute "=" value )
    ; "attribute" and "value" are from [RFC2045]
    ; "type-name" and "subtype-name" are from [RFC4288]
      </artwork>
    </figure>
  </section>

  <section title="CALSCALE" anchor="CALSCALE">
    <t>The CALSCALE parameter is identical to the CALSCALE property in iCalendar
      (see <xref target="RFC5545"/>, section 3.7.1). It is used to define the
      calendar system in which a date or date-time value is expressed. The only
      value specified by iCalendar is "gregorian", which stands for the
      Gregorian system. It is the default when the parameter is absent.
      Additional values may be defined in extension documents and registered
      from IANA (see <xref target="iana_values"/>). A vCard implementation MUST
      ignore properties with a CALSCALE parameter value that it does not
      understand.</t>
    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
        calscale-param = "CALSCALE=" calscale-value

        calscale-value = "gregorian" / iana-token / x-name
      </artwork>
    </figure>
  </section>

  <section title="SORT-AS" anchor="SORT-AS">
    <t>The "sort-as" parameter is used to specify the string to be used for
      national-language-specific sorting. Without this information, sorting
      algorithms could incorrectly sort this vCard within a sequence of sorted
      vCards.  When this property is present in a vCard, then the given strings
      are used for sorting the vCard.</t>
    <t>This parameter's value is a comma-separated list which MUST have as many
      or less elements as the corresponding property value has components.</t>
    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
  sort-as-param = "SORT-AS=" sort-as-value

  sort-as-value = param-value *("," param-value)
      </artwork>
    </figure>

    <t>
      Examples: For the case of surname and given name sorting, the following
      examples define common sort string usage with the N property.
    </t>

    <figure>
      <artwork>
        FN:Rene van der Harten
        N;SORT-AS="Harten,Rene":van der Harten;Rene,J.;Sir;R.D.O.N.

        FN:Robert Pau Shou Chang
        N;SORT-AS="Pau Shou Chang,Robert":Shou Chang;Robert,Pau;;

        FN:Osamu Koura
        N;SORT-AS="Koura,Osamu":Koura;Osamu;;

        FN:Oscar del Pozo
        N;SORT-AS="Pozo,Oscar":del Pozo Triscon;Oscar;;

        FN:Chistine d'Aboville
        N;SORT-AS="Aboville,Christine":d'Aboville;Christine;;

        FN:H. James de Mann
        N;SORT-AS="Mann,James":de Mann;Henry,James;;
      </artwork>
    </figure>

    <figure>
      <preamble>If sorted by surname the results would be:</preamble>
      <artwork>
        Christine d'Aboville
        Rene van der Harten
        Osamu Koura
        H. James de Mann
        Robert Pau Shou Chang
        Oscar del Pozo
      </artwork>
    </figure>

    <figure>
      <preamble>If sorted by given name the results would be:</preamble>
      <artwork>
        Christine d'Aboville
        H. James de Mann
        Osamu Koura
        Oscar del Pozo
        Rene van der Harten
        Robert Pau Shou Chang
      </artwork>
    </figure>
  </section>

  <section title="GEO" anchor="GEO-param">
    <t>The GEO parameter can be used to indicate global positioning
      information that is specific to an address. Its value is the same
      as that of the GEO property (see <xref target="GEO"/>).</t>
    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
  geo-parameter = "GEO=" DQUOTE URI DQUOTE
      </artwork>
    </figure>
  </section>

  <section title="TZ" anchor="TZ-param">
    <t>The TZ parameter can be used to indicate time zone information that is
      specific to an address. Its value is the same as that of the TZ
      property.</t>
    <figure>
      <preamble>ABNF:</preamble>
      <artwork>
  tz-parameter = "TZ=" (param-value / DQUOTE URI DQUOTE)
      </artwork>
    </figure>
  </section>

</section>

<section title="vCard Properties" anchor="properties">

  <t>What follows is an enumeration of the standard vCard properties.</t>

  <section title="General Properties">

    <section title="BEGIN" anchor="BEGIN">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To denote the beginning of a syntactic entity
            within a text/vcard content-type.</t>
          <t hangText="Value type:">text</t>
          <t hangText="Cardinality:">1</t>
          <t hangText="Special notes:">The content entity MUST begin with the
            BEGIN property with a value of "VCARD". The value is
            case-insensitive.</t>
          <t>The BEGIN property is used in conjunction with the END property to
            delimit an entity containing a related set of properties within an
            text/vcard content-type. This construct can be used instead of or in
            addition to wrapping separate sets of information inside additional
            MIME headers.  It is provided for applications that wish to define
            content that can contain multiple entities within the same
            text/vcard content-type or to define content that can be
            identifiable outside of a MIME environment.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  BEGIN-param = 0<nothing>  ; no parameter allowed
  BEGIN-value = "VCARD"
              </artwork>
            </figure>
          </t>
          <t hangText="Example:">
            <figure>
              <artwork>
      BEGIN:VCARD
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="END" anchor="END">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To denote the end of a syntactic entity
            within a text/vcard content-type.</t>
          <t hangText="Value type:">text</t>
          <t hangText="Cardinality:">1</t>
          <t hangText="Special notes:">The content entity MUST end with the END
            type with a value of "VCARD". The value is case-insensitive.</t>
          <t>The END property is used in conjunction with the BEGIN property to
            delimit an entity containing a related set of properties within an
            text/vcard content-type.  This construct can be used instead of or
            in addition to wrapping separate sets of information inside
            additional MIME headers.  It is provided for applications that wish
            to define content that can contain multiple entities within the same
            text/vcard content-type or to define content that can be
            identifiable outside of a MIME environment.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  END-param = 0<nothing>  ; no parameter allowed
  END-value = "VCARD"
              </artwork>
            </figure>
          </t>
          <t hangText="Example:">
            <figure>
              <artwork>
      END:VCARD
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="SOURCE" anchor="SOURCE">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To identify the source of directory information
            contained in the content type.</t>
          <t hangText="Value type:">uri</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="Special notes:">The SOURCE property is used to provide the
            means by which applications knowledgable in the given directory
            service protocol can obtain additional or more up-to-date information
            from the directory service. It contains a URI as defined in <xref
              target="RFC3986"/> and/or other information referencing the
            vCard to which the information pertains. When directory information is
            available from more than one source, the sending entity can pick what
            it considers to be the best source, or multiple SOURCE properties can
            be included.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  SOURCE-param = "VALUE=uri" / pid-param / pref-param / altid-param
               / mediatype-param / any-param
  SOURCE-value = URI
              </artwork>
            </figure>
          </t>
          <t hangText="Examples:">
            <figure>
              <artwork>
  SOURCE:ldap://ldap.example.com/cn=Babs%20Jensen,%20o=Babsco,%20c=US

  SOURCE:http://directory.example.com/addressbooks/jdoe/
   Jean%20Dupont.vcf
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="KIND" anchor="KIND">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To specify the kind of object the vCard
            represents.</t>
          <t hangText="Value type:">A single text value.</t>
          <t hangText="Cardinality:">*1</t>
          <t hangText="Special notes:">The value may be one of the following:
            <list style="hanging">
              <t hangText=""individual"">for a vCard representing a
                single person or entity.  This is the default kind of vCard.</t>
              <t hangText=""group"">for a vCard representing a group
                of persons or entities.  The group's member entities can be
                other vCards or other types of entities, such as email addresses
                or web sites.  A group vCard will usually contain MEMBER
                properties to specify the members of the group, but it is not
                required to.  A group vCard without MEMBER properties can be
                considered an abstract grouping, or one whose members are known
                empirically (perhaps "IETF Participants" or "Republican U.S.
                Senators").</t>
              <t>All properties in a group vCard apply to the group as a whole,
                and not to any particular MEMBER.  For example, an EMAIL
                property might specify the address of a mailing list associated
                with the group, and an IMPP property might refer to a group chat
                room.</t>
              <t hangText=""org"">for a vCard representing an
                organization.  An organization vCard will not (in fact, MUST
                NOT) contain MEMBER properties, and so these are something of a
                cross between "individual" and "group".  An organization is a
                single entity, but not a person.  It might represent a business
                or government, a department or division within a business or
                government, a club, an association, or the like.</t>
              <t>All properties in an organization vCard apply to the
                organization as a whole, as is the case with a group vCard.  For
                example, an EMAIL property might specify the address of a
                contact point for the organization.</t>
              <t hangText=""location"">for a named geographical
                place.  A location vCard will usually contain a GEO property,
                but it is not required to.  A location vCard without a GEO
                property can be considered an abstract location, or one whose
                definition is known empirically (perhaps "New England" or "The
                Seashore").</t>
              <t>All properties in a location vCard apply to the location
                itself, and not with any entity that might exist at that
                location.  For example, in a vCard for an office building, an
                ADR property might give the mailing address for the building,
                and a TEL property might specify the telephone number of the
                receptionist.</t>
              <t hangText="An x-name.">vCards MAY include private or
                experimental values for KIND.  Remember that x-name values are
                not intended for general use, and are unlikely to
                interoperate.</t>
              <t hangText="An iana-token.">Additional values may be registered
                with IANA (see <xref target="iana_values"/>).  A new value's
                specification document MUST specify which properties make sense
                for that new kind of vCard and which do not.</t>
            </list>
            Implementations MUST support the specific string values defined
            above.  If this property is absent, "individual" MUST be assumed as
            the default.  If this property is present but the implementation
            does not understand its value (the value is an x-name or iana-token
            that the implementation does not support), the implementation SHOULD
            act in a neutral way, which usually means treating the vCard as
            though its kind were "individual".  The presence of MEMBER
            properties MAY, however, be taken as an indication that the unknown
            kind is an extension of "group".</t>
          <t>Clients often need to visually distinguish contacts based on what
            they represent, and the KIND property provides a direct way for them
            to do so. For example, when displaying contacts in a list, an icon
            could be displayed next to each one, using distinctive icons for the
            different kinds; a client might use an outline of a single person to
            represent an "individual", an outline of multiple people to
            represent a "group", and so on.  Alternatively, or in addition, a
            client might choose to segregate different kinds of vCards to
            different panes, tabs, or selections in the user interface.</t>
          <t>Some clients might also make functional distinctions among the
            kinds, ignoring "location" vCards for some purposes and considering
            only "location" vCards for others.</t>
          <t>When designing those sorts of visual and functional distinctions,
            client implementations have to decide how to fit unsupported kinds
            into the scheme.  What icon is used for them?  The one for
            "individual"?  A unique one, such as an icon of a question-mark?
            Which tab do they go into?  It is beyond the scope of this
            specification to answer these questions, but these are things
            implementors need to consider.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  KIND-param = "VALUE=text" / any-param
  KIND-value = "individual" / "group" / "org" / "location"
             / iana-token / x-name
              </artwork>
            </figure>
          </t>
          <t hangText="Example:">
            <figure>
              <preamble>This represents someone named Jane Doe working in the
                marketing department of the North American division of ABC
                Inc.</preamble>
              <artwork>
      BEGIN:VCARD
      VERSION:4.0
      KIND:individual
      FN:Jane Doe
      ORG:ABC\, Inc.;North American Division;Marketing
      END:VCARD
              </artwork>
            </figure>
            <figure>
              <preamble>This represents the department itself, commonly known as
              ABC Marketing.</preamble>
              <artwork>
      BEGIN:VCARD
      VERSION:4.0
      KIND:org
      FN:ABC Marketing
      ORG:ABC\, Inc.;North American Division;Marketing
      END:VCARD
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="XML" anchor="XML">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To include extended XML-encoded vCard data in a
            plain vCard.</t>
          <t hangText="Value type:">A single text value.</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="Special notes:">The content of this property is a single
            XML 1.0 <xref target="W3C.REC-xml-20081126"/> element whose
            namespace MUST be explicitly specified using the
            xmlns attribute and MUST NOT be the vCard 4 namespace
            ("urn:ietf:params:xml:ns:vcard-4.0"). (This implies that it cannot
            duplicate a standard vCard property.) The element is to be
            interpreted as if it was contained in a <vcard> element, as
            defined in <xref target="I-D.ietf-vcarddav-vcardxml"/>.</t>
          <t>The fragment is subject to normal line folding and escaping, i.e.
            replace all backslashes with "\\", then replace all newlines with
            "\n", then fold long lines.</t>
          <t>Support for this property is OPTIONAL, but implementations of this
            specification MUST preserve instances of this property when
            propagating vCards.</t>
          <t>See <xref target="I-D.ietf-vcarddav-vcardxml"/> for more
            information on the intended use of this property.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  XML-param = "VALUE=text" / altid-param
  XML-value = text
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

  </section>

  <section title="Identification Properties">

    <t>These types are used to capture information associated with the
      identification and naming of the entity associated with the vCard.</t>

    <section title="FN" anchor="FN">
      <t>
        <list style='hanging'>
          <t hangText='Purpose:'>To specify the formatted text corresponding to
            the name of the object the vCard represents.</t>
          <t hangText='Value type:'>A single text value.</t>
          <t hangText="Cardinality:">1*</t>
          <t hangText='Special notes:'>This property is based on the semantics
            of the X.520 Common Name attribute. The property MUST be present in
            the vCard object.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  FN-param = "VALUE=text" / type-param / language-param / altid-param
           / pid-param / pref-param / any-param
  FN-value = text
              </artwork>
            </figure>
          </t>
          <t hangText="Example:">
            <figure>
              <artwork>
      FN:Mr. John Q. Public\, Esq.
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="N" anchor="N">
      <t>
        <list style='hanging'>
          <t hangText='Purpose:'>To specify the components of the name of the
            object the vCard represents.</t>
          <t hangText='Value type:'>A single structured text value. Each component
            can have multiple values.</t>
          <t hangText="Cardinality:">*1</t>
          <t hangText='Special note:'>The structured property value corresponds, in
            sequence, to the Family Names (also known as surnames), Given Names,
            Additional Names, Honorific Prefixes, and Honorific Suffixes. The
            text components are separated by the SEMI-COLON character (ASCII
            decimal 59). Individual text components can include multiple text
            values separated by the COMMA character (ASCII decimal 44). This
            property is based on the semantics of the X.520 individual name
            attributes.  The property SHOULD be present in the vCard object when
            the name of the object the vCard represents follows the X.520
            model.</t> <t>The SORT-AS parameter MAY be applied to this
            property.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  N-param = "VALUE=text" / sort-as-param / language-param
          / altid-param / any-param
  N-value = list-component 4(";" list-component)
              </artwork>
            </figure>
          </t>
          <t hangText="Examples:">
            <figure>
              <artwork>
          N:Public;John;Quinlan;Mr.;Esq.

          N:Stevenson;John;Philip,Paul;Dr.;Jr.,M.D.,A.C.P.
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="NICKNAME" anchor="NICKNAME">
      <t>
        <list style='hanging'>
          <t hangText='Purpose:'>To specify the text corresponding to the nickname
            of the object the vCard represents.</t>
          <t hangText='Value type:'>One or more text values separated by a COMMA
            character (ASCII decimal 44).</t>
          <t hangText="Cardinality:">*</t>
          <t hangText='Special note:'>The nickname is the descriptive name given
            instead of or in addition to the one belonging to a the object the
            vCard represents. It can also be used to specify a familiar form of
            a proper name specified by the FN or N properties.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  NICKNAME-param = "VALUE=text" / type-param / language-param
                 / altid-param / pid-param / pref-param / any-param
  NICKNAME-value = text-list
              </artwork>
            </figure>
          </t>
          <t hangText="Examples:">
            <figure>
              <artwork>
          NICKNAME:Robbie

          NICKNAME:Jim,Jimmie

          NICKNAME;TYPE=work:Boss
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="PHOTO" anchor="PHOTO">
      <t>
        <list style='hanging'>
          <t hangText='Purpose:'>To specify an image or photograph information
            that annotates some aspect of the object the vCard represents.</t>
          <t hangText='Value type:'>A single URI.</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  PHOTO-param = "VALUE=uri" / altid-param / type-param
              / mediatype-param
  PHOTO-value = URI
              </artwork>
            </figure>
          </t>
          <t hangText="Examples:">
            <figure>
              <artwork>
    PHOTO:http://www.example.com/pub/photos/jqpublic.gif

    PHOTO:data:image/jpeg;base64,MIICajCCAdOgAwIBAgICBEUwDQYJKoZIhv
     AQEEBQAwdzELMAkGA1UEBhMCVVMxLDAqBgNVBAoTI05ldHNjYXBlIENvbW11bm
     ljYXRpb25zIENvcnBvcmF0aW9uMRwwGgYDVQQLExNJbmZvcm1hdGlvbiBTeXN0
     <...remainder of base64-encoded data...>
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="BDAY" anchor="BDAY">
      <t>
        <list style='hanging'>
          <t hangText='Purpose:'>To specify the birth date of the object the vCard
            represents.</t>
          <t hangText='Value type:'>The default is a single date-and-or-time
            value. It can also be reset to a single text value.</t>
          <t hangText="Cardinality:">*1</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  BDAY-param = BDAY-param-date / BDAY-param-text
  BDAY-value = date-and-or-time / text
    ; Value and parameter MUST match.

  BDAY-param-date = "VALUE=date-and-or-time"
  BDAY-param-text = "VALUE=text" / language-param

  BDAY-param =/ altid-param / calscale-param / any-param
    ; calscale-param can only be present when BDAY-value is
    ; date-and-or-time and actually contains a date or date-time.
              </artwork>
            </figure>
          </t>
          <t hangText="Examples:">
            <figure>
              <artwork>
          BDAY:19960415
          BDAY:--0415
          BDAY;19531015T231000Z
          BDAY;VALUE=text:circa 1800
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="ANNIVERSARY" anchor="ANNIVERSARY">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">The date of marriage, or equivalent, of the
            object the vCard represents.</t>
          <t hangText='Value type:'>The default is a single date-and-or-time
            value. It can also be reset to a single text value.</t>
          <t hangText="Cardinality:">*1</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  ANNIVERSARY-param = "VALUE=" ("date-and-or-time" / "text")
  ANNIVERSARY-value = date-and-or-time / text
    ; Value and parameter MUST match.

  ANNIVERSARY-param =/ altid-param / calscale-param / any-param
    ; calscale-param can only be present when ANNIVERSARY-value is
    ; date-and-or-time and actually contains a date or date-time.
              </artwork>
            </figure>
          </t>
          <t hangText="Examples:">
            <figure>
              <artwork>
          ANNIVERSARY:19960415
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="GENDER" anchor="GENDER">
      <t>
        <list style="hanging">
          <t hangText='Purpose:'>To specify the components of the sex and gender
            identity of the object the vCard represents.</t>
          <t hangText='Value type:'>A single structured value with two
            components. Each component has a single text value.</t>
          <t hangText="Cardinality:">*1</t>
          <t hangText='Special notes:'>The components correspond, in sequence,
            to the sex (biological), and gender identity. Each component is
            optional.
            <list style="hanging">
              <t hangText="Sex component:">A single letter. M stands for "male",
                F stands for "female", O stands for "other", N stands for "none
                or not applicable", U stands for "unknown".</t>
              <t hangText="Gender identity component:">Free-form text.</t>
            </list>
          </t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
                GENDER-param = "VALUE=text" / any-param
                GENDER-value = sex [";" text]

                sex = "" / "M" / "F" / "O" / "N" / "U"
              </artwork>
            </figure>
          </t>
          <t hangText="Examples:">
            <figure>
              <artwork>
  GENDER:M 
  GENDER:F 
  GENDER:M;Fellow 
  GENDER:F;Bird 
  GENDER:O;intersex 
  GENDER:;queer 
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

  </section>

  <section title="Delivery Addressing Properties" anchor="oldsection_3_2">

    <t>
      These types are concerned with information related to the delivery addressing or label for the vCard object.
    </t>

    <section title="ADR" anchor="ADR">
      <t>
        <list style='hanging'>
          <t hangText='Purpose:'>To specify the components of the delivery
            address for the vCard object.</t>
          <t hangText='Value type:'>A single structured text value, separated by
            the SEMI-COLON character (ASCII decimal 59).</t>
          <t hangText="Cardinality:">*</t>
          <t hangText='Special notes:'>The structured type value consists of a
            sequence of address components. The component values MUST be
            specified in their corresponding position. The structured type value
            corresponds, in sequence, to the post office box; the extended
            address (e.g. apartment or suite number); the street address; the
            locality (e.g., city); the region (e.g., state or province); the
            postal code; the country name (full name in the language specified
            in <xref target="LANGUAGE"/>). When a component value is missing,
            the associated component separator MUST
            still be specified.</t>
          <t>Experience with vCard 3 has shown that the first two components
            (post office box and extended address) are plagued with many
            interoperability issues. To ensure maximal interoperability, their
            values SHOULD be empty.</t>
          <t>The text components are separated by the SEMI-COLON character
            (ASCII decimal 59). Where it makes semantic sense, individual text
            components can include multiple text values (e.g., a "street"
            component with multiple lines) separated by the COMMA character
            (ASCII decimal 44).</t>
          <t>The property can include the "PREF" parameter to indicate the
            preferred delivery address when more than one address is
            specified.</t>
          <t>The GEO and TZ parameters MAY be used with this property.</t>
          <t>The property can also include a "LABEL" parameter to present a
            delivery delivery address label for the address. Its value is a
            plain-text string representing the formatted address. Newlines are
            encoded as \n, as they are for property values.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  label-param = "LABEL=" param-value

  ADR-param = "VALUE=text" / label-param / language-param
            / geo-parameter / tz-parameter / altid-param / pid-param
            / pref-param / type-param / any-param
  ADR-value = ADR-component-pobox ";" ADR-component-ext ";"
              ADR-component-street ";" ADR-component-locality ";"
              ADR-component-region ";" ADR-component-code ";"
              ADR-component-country
  ADR-component-pobox    = list-component
  ADR-component-ext      = list-component
  ADR-component-street   = list-component
  ADR-component-locality = list-component
  ADR-component-region   = list-component
  ADR-component-code     = list-component
  ADR-component-country  = list-component
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example: In this example the post office box and the extended address are absent.
      </t>

      <figure>
      <artwork>
  ADR;GEO="geo:12.3457,78.910";LABEL="Mr. John Q. Public, Esq.\n
   Mail Drop: TNE QB\n123 Main Street\nAny Town, CA  91921-1234\n
   U.S.A.":;;123 Main Street;Any Town;CA;91921-1234;U.S.A.
      </artwork>
      </figure>

    </section>

  </section>

  <section title="Communications Properties" anchor="oldsection_3_3">

    <t>
      These properties describe information about how to communicate with the
      object the vCard represents.
    </t>

    <section title="TEL" anchor="TEL">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify the telephone number for telephony
            communication with the object the vCard represents.</t>

          <t hangText='Value type:'>By default it is a single free-form text
            value (for backward compatibility with vCard 3), but it SHOULD be
            reset to a URI value. It is expected that the URI scheme will be
            "tel", as specified in <xref target="RFC3966"/>, but other schemes
            MAY be used.</t>

          <t hangText="Cardinality:">*</t>

          <t hangText='Special notes:'>This property is based on the X.520
            Telephone Number attribute.</t>

          <t>The property can include the "PREF" parameter to indicate a
            preferred-use telephone number.</t>

          <t>The property can include the parameter "TYPE" to specify intended
            use for the telephone number. The predefined values for the TYPE
            parameter are:</t>

        </list>
      </t>

      <texttable>
        <ttcol align="left">Value</ttcol>
        <ttcol align="left">Description</ttcol>

        <c>text</c>
        <c>Indicates that the telephone number supports text messages
          (SMS).</c>

        <c>voice</c>
        <c>Indicates a voice telephone number.</c>

        <c>fax</c>
        <c>Indicates a facsimile telephone number.</c>

        <c>cell</c>
        <c>Indicates a cellular or mobile telephone number.</c>

        <c>video</c>
        <c>Indicates a video conferencing telephone number.</c>

        <c>pager</c>
        <c>Indicates a paging device telephone number.</c>

        <c>textphone</c>
        <c>Indicates a telecommunication device for people with hearing or
          speech difficulties..</c>
      </texttable>

      <t>
        <list style='hanging'>

          <t>The default type is "voice". These type parameter values can be
            specified as a parameter list (e.g., TYPE=text;TYPE=voice) or as a
            value list (e.g., TYPE="text,voice").  The default can be overridden
            to another set of values by specifying one or more alternate values.
            For example, the default TYPE of "voice" can be reset to a VOICE and
            FAX telephone number by the value list TYPE="voice,fax".</t>

          <t>If this property's value is a URI that can also be used for instant
            messaging, the IMPP (<xref target="IMPP"/>) property SHOULD be used
            in addition to this property.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  TEL-param = TEL-text-param / TEL-uri-param
  TEL-value = TEL-text-value / TEL-uri-value
    ; Value and parameter MUST match

  TEL-text-param = "VALUE=text"
  TEL-text-value = text

  TEL-uri-param = "VALUE=uri" / mediatype-param
  TEL-uri-value = URI

  TEL-param =/ type-param / pid-param / pref-param / altid-param
             / any-param

  type-param-tel = "text" / "voice" / "fax" / "cell" / "video"
                 / "pager" / "textphone" / iana-token / x-name
    ; type-param-tel MUST NOT be used with a property other than TEL.
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
  TEL;VALUE=uri;PREF=1;TYPE="voice,home":tel:+1-555-555-5555;ext=5555
  TEL;VALUE=uri;TYPE=home:tel:+33-01-23-45-67
      </artwork>
      </figure>

    </section>

    <section title="EMAIL" anchor="EMAIL">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify the electronic mail address for
            communication with the object the vCard represents.</t>

          <t hangText='Value type:'>A single text value.</t>

          <t hangText="Cardinality:">*</t>

          <t hangText='Special notes:'>The property can include tye "PREF"
            parameter to indicate a preferred-use email address when more than
            one is specified.</t>
          <t>Even though the value is free-form UTF-8 text, it is likely to be
            interpreted by an MUA as an "addr-spec", as defined in <xref
              target="RFC5322"/>, section 3.4.1. Readers should also be aware of
            the current work toward internationalized email addresses <xref
              target="I-D.ietf-eai-rfc5335bis"/>.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  EMAIL-param = "VALUE=text" / pid-param / pref-param / type-param
              / altid-param / any-param
  EMAIL-value = text
              </artwork>
            </figure>
          </t>

        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        EMAIL;TYPE=work:jqpublic@xyz.example.com

        EMAIL;PREF=1:jane_doe@example.com
      </artwork>
      </figure>

    </section>

    <section title="IMPP" anchor="IMPP">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To specify the URI for instant messaging and
            presence protocol communications with the object the vCard
            represents.</t>
          <t hangText="Value type:">A single URI.</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="Special notes:">The property may include the "PREF"
            parameter to indicate that this is a preferred address and has the
            same semantics as the "PREF" parameter in a TEL property.</t>
          <t>If this property's value is a URI that can be used for voice and/or
            video, the TEL property (<xref target="TEL"/>) SHOULD be used in
            addition to this property.</t>
          <t>This property is adapted from <xref target="RFC4770"/>, which is
            made obsolete by this document.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  IMPP-param = "VALUE=uri" / pid-param / pref-param / type-param
             / mediatype-param / altid-param / any-param
  IMPP-value = URI
              </artwork>
            </figure>
          </t>
          <t hangText="Example:">
            <figure>
              <artwork>
    IMPP;PREF=1:xmpp:alice@example.com
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="LANG" anchor="LANG">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To specify the language(s) that may be used
            for contacting the entity associated with the vCard.</t>
          <t hangText="Value type:">A single language-tag value.</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  LANG-param = "VALUE=language-tag" / pid-param / pref-param
             / altid-param / type-param / any-param
  LANG-value = Language-Tag
              </artwork>
            </figure>
          </t>
          <t hangText="Example:">
            <figure>
              <artwork>
    LANG;TYPE=work;PREF=1:en
    LANG;TYPE=work;PREF=2:fr
    LANG;TYPE=home:fr
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

  </section>

  <section title="Geographical Properties" anchor="oldsection_3_4">

    <t>
      These properties are concerned with information associated with
      geographical positions or regions associated with the object the vCard
      represents.
    </t>

    <section title="TZ" anchor="TZ">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify information related to the time zone
            of the object the vCard represents.</t>

          <t hangText='Value type:'>The default is a single text value. It can
            also be reset to a single URI or utc-offset value.</t>

          <t hangText="Cardinality:">*</t>

          <t hangText='Special notes:'>It is expected that names from the
            public-domain Olson database <xref target="TZ-DB"/> will be used, but
            this is not a restriction.</t>
          <t>Efforts are currently being directed at creating a standard URI
            scheme for expressing time zone information. Usage of such a scheme
            would ensure a high level of interoperability between
            implementations that support it.</t>
          <t>Note that utc-offset values SHOULD NOT be used because the UTC
            offset varies with time - not just because of the usual daylight
            saving time shifts that occur in may regions, but often entire
            regions will "re-base" their overall offset. The actual offset may
            be +/- 1 hour (or perhaps a little more) than the one given.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  TZ-param = "VALUE=" ("text" / "uri" / "utc-offset")
  TZ-value = text / URI / utc-offset
    ; Value and parameter MUST match

  TZ-param =/ altid-param / pid-param / pref-param / type-param
            / mediatype-param / any-param
              </artwork>
            </figure>
          </t>

        </list>
      </t>

      <t>
        Examples:
      </t>

      <figure>
      <artwork>
  TZ:Raleigh/North America

  TZ;VALUE=utc-offset:-0500
    ; Note: utc-offset format is NOT RECOMMENDED.
      </artwork>
      </figure>

    </section>

    <section title="GEO" anchor="GEO">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify information related to the global
            positioning of the object the vCard represents.</t>

          <t hangText='Value type:'>A single URI.</t>

          <t hangText="Cardinality:">*</t>

          <t hangText='Special notes:'>The "geo" URI scheme <xref
              target="RFC5870"/> is particularly well-suited for
            this property, but other schemes MAY be used.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  GEO-param = "VALUE=uri" / pid-param / pref-param / type-param
            / mediatype-param / altid-param / any-param
  GEO-value = URI
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        GEO:geo:37.386013,-122.082932
      </artwork>
      </figure>

    </section>

  </section>

  <section title="Organizational Properties" anchor="oldsection_3_5">

    <t>
      These properties are concerned with information associated with
      characteristics of the organization or organizational units of the object
      that the vCard represents.
    </t>

    <section title="TITLE" anchor="TITLE">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify the position or job of the object
            the vCard represents.</t>

          <t hangText='Value type:'>A single text value.</t>

          <t hangText="Cardinality:">*</t>

          <t hangText="Special notes:">This property is based on the X.520 Title
            attribute.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  TITLE-param = "VALUE=text" / language-param / pid-param
              / pref-param / altid-param / type-param / any-param
  TITLE-value = text
              </artwork>
            </figure>
          </t>

        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        TITLE:Research Scientist
      </artwork>
      </figure>

    </section>

    <section title="ROLE" anchor="ROLE">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify the function or part played in a
            particular situation by the object the vCard represents.</t>

          <t hangText='Value type:'>A single text value.</t>

          <t hangText="Cardinality:">*</t>

          <t hangText='Special notes:'>This property is based on the X.520 Business
            Category explanatory attribute. This property is included as an
            organizational type to avoid confusion with the semantics of the
            TITLE property and incorrect usage of that property when the semantics of
            this property is intended.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  ROLE-param = "VALUE=text" / language-param / pid-param / pref-param
             / type-param / altid-param / any-param
  ROLE-value = text
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        ROLE:Project Leader
      </artwork>
      </figure>

    </section>

    <section title="LOGO" anchor="LOGO">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify a graphic image of a logo associated
            with the object the vCard represents.</t>

          <t hangText='Value type:'>A single URI.</t>

          <t hangText="Cardinality:">*</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  LOGO-param = "VALUE=uri" / language-param / pid-param / pref-param
             / type-param / mediatype-param / altid-param / any-param
  LOGO-value = URI
              </artwork>
            </figure>
          </t>

        </list>
      </t>

      <t>
        Examples:
      </t>

      <figure>
      <artwork>
  LOGO:http://www.example.com/pub/logos/abccorp.jpg

  LOGO:data:image/jpeg;base64,MIICajCCAdOgAwIBAgICBEUwDQYJKoZIhvc
   AQEEBQAwdzELMAkGA1UEBhMCVVMxLDAqBgNVBAoTI05ldHNjYXBlIENvbW11bm
   ljYXRpb25zIENvcnBvcmF0aW9uMRwwGgYDVQQLExNJbmZvcm1hdGlvbiBTeXN0
   <...the remainder of base64-encoded data...>
      </artwork>
      </figure>

    </section>

    <section title="ORG" anchor="ORG">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify the organizational name and units
            associated with the vCard.</t>

          <t hangText='Value type:'>A single structured text value consisting of
            components separated by the SEMI-COLON character (ASCII decimal
            59).</t>

          <t hangText="Cardinality:">*</t>

          <t hangText='Special notes:'>The property is based on the X.520
            Organization Name and Organization Unit attributes. The property value
            is a structured type consisting of the organization name, followed
            by zero or more levels of organizational unit names.</t>
          <t>The SORT-AS parameter MAY be applied to this property.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  ORG-param = "VALUE=text" / sort-as-param / language-param
            / pid-param / pref-param / altid-param / type-param
            / any-param
  ORG-value = component *(";" component)
              </artwork>
            </figure>
          </t>

        </list>
      </t>

      <t>
        Example: A property value consisting of an organizational name,
        organizational unit #1 name and organizational unit #2 name.
      </t>

      <figure>
      <artwork>
        ORG:ABC\, Inc.;North American Division;Marketing
      </artwork>
      </figure>

    </section>

    <section title="MEMBER" anchor="MEMBER">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To include a member in the group this vCard
            represents.</t>
          <t hangText="Value type:">A single URI. It MAY refer to something other
            than a vCard object. For example, an e-mail distribution list could
            employ the "mailto" URI scheme <xref target="RFC6068"/> for
            efficiency.</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="Special notes:">This property MUST NOT be present unless
            the value of the KIND property is "group".</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  MEMBER-param = "VALUE=uri" / pid-param / pref-param / altid-param
               / mediatype-param / any-param
  MEMBER-value = URI
              </artwork>
            </figure>
          </t>
        </list>
      </t>
      <t>Examples:</t>
      <figure>
        <artwork>
  BEGIN:VCARD
  VERSION:4.0
  KIND:group
  FN:The Doe family
  MEMBER:urn:uuid:03a0e51f-d1aa-4385-8a53-e29025acd8af
  MEMBER:urn:uuid:b8767877-b4a1-4c70-9acc-505d3819e519
  END:VCARD
  BEGIN:VCARD
  VERSION:4.0
  FN:John Doe
  UID:urn:uuid:03a0e51f-d1aa-4385-8a53-e29025acd8af
  END:VCARD
  BEGIN:VCARD
  VERSION:4.0
  FN:Jane Doe
  UID:urn:uuid:b8767877-b4a1-4c70-9acc-505d3819e519
  END:VCARD
        </artwork>
      </figure>
      <figure>
        <artwork>
  BEGIN:VCARD
  VERSION:4.0
  KIND:group
  FN:Funky distribution list
  MEMBER:mailto:subscriber1@example.com
  MEMBER:xmpp:subscriber2@example.com
  MEMBER:sip:subscriber3@example.com
  MEMBER:tel:+1-418-555-5555
  END:VCARD
        </artwork>
      </figure>
    </section>

    <section title="RELATED" anchor="RELATED">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To specify a relationship between another
            entity and the entity represented by this vCard.</t>
          <t hangText="Value type:">A single URI. It can also be reset to a
            single text value. The text value can be used to specify textual
            information.</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="Special notes:">The TYPE parameter MAY be used to
            characterize the related entity. It contains a comma-separated
            list of values that are registered from IANA as described in <xref
              target="iana_registration"/>. The registry is pre-populated with
            the values defined in <xref target="xfn"/>. This document also
            specifies two additional values:
            <list style="hanging">
              <t hangText="agent:">an entity who may sometimes act on behalf of
                the entity associated with the vCard.</t>
              <t hangText="emergency:">indicates an emergency contact</t>
            </list>
          </t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  RELATED-param = RELATED-param-uri / RELATED-param-text
  RELATED-value = URI / text
    ; Parameter and value MUST match.

  RELATED-param-uri = "VALUE=uri" / mediatype-param
  RELATED-param-text = "VALUE=text" / language-param

  RELATED-param =/ pid-param / pref-param / altid-param / type-param
                 / any-param

  type-param-related = related-type-value *("," related-type-value)
    ; type-param-related MUST NOT be used with a property other than
    ; RELATED.

  related-type-value = "contact" / "acquaintance" / "friend" / "met"
                     / "co-worker" / "colleague" / "co-resident"
                     / "neighbor" / "child" / "parent"
                     / "sibling" / "spouse" / "kin" / "muse"
                     / "crush" / "date" / "sweetheart" / "me"
                     / "agent" / "emergency"
              </artwork>
            </figure>
          </t>
        </list>
      </t>
      <figure>
        <preamble>Examples:</preamble>
        <artwork>
RELATED;TYPE=friend:urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6
RELATED;TYPE=contact:http://example.com/directory/jdoe.vcf
RELATED;TYPE=co-worker;VALUE=text:Please contact my assistant Jane
 Doe for any inquiries.
        </artwork>
      </figure>
    </section>

  </section>

  <section title="Explanatory Properties" anchor="oldsection_3_6">

    <t>
      These properties are concerned with additional explanations, such as that
      related to informational notes or revisions specific to the vCard.
    </t>

    <section title="CATEGORIES" anchor="CATEGORIES">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify application category information
            about the vCard. Also known as "tags".</t>

          <t hangText='Value type:'>One or more text values separated by a COMMA
            character (ASCII decimal 44).</t>

          <t hangText="Cardinality:">*</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  CATEGORIES-param = "VALUE=text" / pid-param / pref-param
                   / type-param / altid-param / any-param
  CATEGORIES-value = text-list
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        CATEGORIES:TRAVEL AGENT

        CATEGORIES:INTERNET,IETF,INDUSTRY,INFORMATION TECHNOLOGY
      </artwork>
      </figure>

    </section>

    <section title="NOTE" anchor="NOTE">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify supplemental information or a
            comment that is associated with the vCard.</t>

          <t hangText='Value type:'>A single text value.</t>

          <t hangText="Cardinality:">*</t>

          <t hangText='Special notes:'>The property is based on the X.520
            Description attribute.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  NOTE-param = "VALUE=text" / language-param / pid-param / pref-param
             / type-param / altid-param / any-param
  NOTE-value = text
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        NOTE:This fax number is operational 0800 to 1715
          EST\, Mon-Fri.
      </artwork>
      </figure>

    </section>

    <section title="PRODID" anchor="PRODID">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify the identifier for the product that
            created the vCard object.</t>

          <t hangText='Type value:'>A single text value.</t>

          <t hangText="Cardinality:">*1</t>

          <t hangText='Special notes:'>Implementations SHOULD use a method such
            as that specified for Formal Public Identifiers in <xref
              target="ISO9070"/> or for Universal Resource Names in <xref
              target="RFC3406"/> to ensure that the text value is unique.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  PRODID-param = "VALUE=text" / any-param
  PRODID-value = text
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        PRODID:-//ONLINE DIRECTORY//NONSGML Version 1//EN
      </artwork>
      </figure>

    </section>

    <section title="REV" anchor="REV">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify revision information about the
            current vCard.</t>

          <t hangText='Value type:'>A single timestamp value.</t>

          <t hangText="Cardinality:">*1</t>

          <t hangText='Special notes:'>The value distinguishes the current
            revision of the information in this vCard for other renditions of
            the information.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  REV-param = "VALUE=timestamp" / any-param
  REV-value = timestamp
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        REV:19951031T222710Z
      </artwork>
      </figure>

    </section>

    <section title="SOUND" anchor="SOUND">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify a digital sound content information
            that annotates some aspect of the vCard. This property is often
            used to specify the proper pronunciation of the name property value of
            the vCard.</t>

          <t hangText='Value type:'>A single URI.</t>

          <t hangText="Cardinality:">*</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  SOUND-param = "VALUE=uri" / language-param / pid-param / pref-param
              / type-param / mediatype-param / altid-param
              / any-param
  SOUND-value = URI
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
  SOUND:CID:JOHNQPUBLIC.part8.19960229T080000.xyzMail@example.com

  SOUND:data:audio/basic;base64,MIICajCCAdOgAwIBAgICBEUwDQYJKoZIh
   AQEEBQAwdzELMAkGA1UEBhMCVVMxLDAqBgNVBAoTI05ldHNjYXBlIENvbW11bm
   ljYXRpb25zIENvcnBvcmF0aW9uMRwwGgYDVQQLExNJbmZvcm1hdGlvbiBTeXN0
   <...the remainder of base64-encoded data...>
      </artwork>
      </figure>

    </section>

    <section title="UID" anchor="UID">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify a value that represents a globally
            unique identifier corresponding to the entity
            associated with the vCard.</t>

          <t hangText='Value type:'>A single URI value. It MAY also be reset to
            free-form text.</t>

          <t hangText="Cardinality:">*1</t>

          <t hangText='Special notes:'>This property is used to uniquely
            identify the object that the vCard represents. The "uuid" URN
            namespace defined in <xref target="RFC4122"/> is particularly
            well-suited to this task, but other URI schemes MAY be used.
            Free-form text MAY also be used.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  UID-param = UID-uri-param / UID-text-param
  UID-value = UID-uri-value / UID-text-value
    ; Value and parameter MUST match.

  UID-uri-param = "VALUE=uri"
  UID-uri-value = URI

  UID-text-param = "VALUE=text"
  UID-text-value = text

  UID-param =/ any-param
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        UID:urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6
      </artwork>
      </figure>

    </section>

    <section title="CLIENTPIDMAP" anchor="CLIENTPIDMAP">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To give a global meaning to a local PID source
            identifier.</t>
          <t hangText="Value type:">A semicolon-separated pair of values. The
            first field is a small integer corresponding to the second field of
            a PID parameter instance. The second field is a URI. The "uuid" URN
            namespace defined in <xref target="RFC4122"/> is particularly
            well-suited to this task, but other URI schemes MAY be used.</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="Special notes:">PID source identifiers (the source
            identifier is the second field in a PID parameter instance) are
            small integers that only have significance within the scope of a
            single vCard instance. Each distinct source identifier present in a
            vCard MUST have an associated CLIENTPIDMAP. See <xref
              target="synchronization"/> for more details on the usage of
            CLIENTPIDMAP.</t>
          <t>PID source identifiers MUST be strictly positive. Zero is not
            allowed.</t>
          <t>As a special exception, the PID parameter MUST NOT be applied to
            this property.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  CLIENTPIDMAP-param = any-param
  CLIENTPIDMAP-value = 1*DIGIT ";" URI
              </artwork>
            </figure>
          </t>
        </list>
      </t>
      <figure>
        <preamble>
          Example:
        </preamble>
        <artwork>
  TEL;PID=3.1,4.2;VALUE=uri:tel:+1-555-555-5555
  EMAIL;PID=4.1,5.2:jdoe@example.com
  CLIENTPIDMAP:1;urn:uuid:3df403f4-5924-4bb7-b077-3c711d9eb34b
  CLIENTPIDMAP:2;urn:uuid:d89c9c7a-2e1b-4832-82de-7e992d95faa5
        </artwork>
      </figure>
    </section>

    <section title="URL" anchor="URL">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify a uniform resource locator
            associated with the object that the vCard refers to. Examples for
            individuals include personal web sites, blogs, and social networking
            site identifiers.</t>

          <t hangText="Cardinality:">*</t>

          <t hangText='Value type:'>A single uri value.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  URL-param = "VALUE=uri" / pid-param / pref-param / type-param
            / mediatype-param / altid-param / any-param
  URL-value = URI
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        URL:http://example.org/restaurant.french/~chezchic.html
      </artwork>
      </figure>

    </section>

    <section title="VERSION" anchor="VERSION">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify the version of the vCard
            specification used to format this vCard.</t>

          <t hangText='Value type:'>A single text value.</t>

          <t hangText="Cardinality:">1</t>

          <t hangText='Special notes:'>This property MUST be present in the
            vCard object, and it must appear immediately after BEGIN:VCARD. The
            value MUST be "4.0" if the vCard corresponds to this specification.
            Note that earlier versions of vCard allowed this property to be
            placed anywhere in the vCard object, or even to be absent.</t>

          <t hangText="ABNF:">
            <figure>
              <artwork>
  VERSION-param = "VALUE=text" / any-param
  VERSION-value = "4.0"
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Example:
      </t>

      <figure>
      <artwork>
        VERSION:4.0
      </artwork>
      </figure>

    </section>

  </section>

  <section title="Security Properties" anchor="oldsection_3_7">

    <t>
      These properties are concerned with the security of communication pathways or
      access to the vCard.
    </t>

    <section title="KEY" anchor="KEY">

      <t>
        <list style='hanging'>

          <t hangText='Purpose:'>To specify a public key or authentication
            certificate associated with the object that the vCard
            represents.</t>

          <t hangText='Value type:'>A single URI. It can also be reset to a
            text value.</t>

          <t hangText="Cardinality:">*</t>
            
          <t hangText="ABNF:">
            <figure>
              <artwork>
  KEY-param = KEY-uri-param / KEY-text-param
  KEY-value = KEY-uri-value / KEY-text-value
    ; Value and parameter MUST match.

  KEY-uri-param = "VALUE=uri" / mediatype-param
  KEY-uri-value = URI

  KEY-text-param = "VALUE=text"
  KEY-text-value = text

  KEY-param =/ altid-param / pid-param / pref-param / type-param
             / any-param
              </artwork>
            </figure>
          </t>
        </list>
      </t>

      <t>
        Examples:
      </t>

      <figure>
      <artwork>
  KEY:http://www.example.com/keys/jdoe

  KEY;MEDIATYPE=application/pgp-keys:ftp://example.com/keys/jdoe

  KEY:data:application/pgp-keys;base64,MIICajCCAdOgAwIBAgICBE
   UwDQYJKoZIhvcNAQEEBQAwdzELMAkGA1UEBhMCVVMxLDAqBgNVBAoTI05l
   <... remainder of base64-encoded data ...>
      </artwork>
      </figure>

    </section>

  </section>

  <section title="Calendar Properties">

    <t>These properties are further specified in <xref target="RFC2739"/>.</t>

    <section title="FBURL" anchor="FBURL">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To specify the URI for the busy time associated
            with the object that the vCard represents.</t>
          <t hangText="Value type:">A single URI value.</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="Special notes:">Where multiple FBURL properties are
            specified, the default FBURL property is indicated with the PREF
            parameter. The FTP <xref target="RFC1738"/> or HTTP <xref
              target="RFC2616"/> type of URI points to an iCalendar <xref
              target="RFC5545"/> object associated with a snapshot of the next
            few weeks or months of busy time data. If the iCalendar object is
            represented as a file or document, its file extension should be
            ".ifb".</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  FBURL-param = "VALUE=uri" / pid-param / pref-param / type-param
              / mediatype-param / altid-param / any-param
  FBURL-value = URI
              </artwork>
            </figure>
          </t>
          <t hangText="Examples:">
            <figure>
              <artwork>
  FBURL;PREF=1:http://www.example.com/busy/janedoe
  FBURL;MEDIATYPE=text/calendar:ftp://example.com/busy/project-a.ifb
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="CALADRURI" anchor="CALADRURI">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To specify the calendar user address <xref
              target="RFC5545"/> to which a scheduling request <xref
              target="RFC5546"/> should be sent for the object represented by
            the vCard.</t>
          <t hangText="Value type:">A single URI value.</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="Special notes:">Where multiple CALADRURI properties are
            specified, the default CALADRURI property is indicated with the PREF
            parameter.</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  CALADRURI-param = "VALUE=uri" / pid-param / pref-param / type-param
                  / mediatype-param / altid-param / any-param
  CALADRURI-value = URI
              </artwork>
            </figure>
          </t>
          <t hangText="Example:">
            <figure>
              <artwork>
  CALADRURI;PREF=1:mailto:janedoe@example.com
  CALADRURI:http://example.com/calendar/jdoe
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

    <section title="CALURI" anchor="CALURI">
      <t>
        <list style="hanging">
          <t hangText="Purpose:">To specify the URI for a calendar associated
            with the object represented by the vCard.</t>
          <t hangText="Value type:">A single URI value.</t>
          <t hangText="Cardinality:">*</t>
          <t hangText="Special notes:">Where multiple CALURI properties are
            specified, the default CALURI property is indicated with the PREF
            parameter.  The property should contain a URI pointing to an
            iCalendar <xref target="RFC5545"/> object associated with a snapshot
            of the user's calendar store. If the iCalendar object is represented
            as a file or document, its file extension should be ".ics".</t>
          <t hangText="ABNF:">
            <figure>
              <artwork>
  CALURI-param = "VALUE=uri" / pid-param / pref-param / type-param
               / mediatype-param / altid-param / any-param
  CALURI-value = URI
              </artwork>
            </figure>
          </t>
          <t hangText="Examples:">
            <figure>
              <artwork>
  CALURI;PREF=1:http://cal.example.com/calA
  CALURI;MEDIATYPE=text/calendar:ftp://ftp.example.com/calA.ics
              </artwork>
            </figure>
          </t>
        </list>
      </t>
    </section>

  </section>

  <section title="Extended Properties and Parameters" anchor="oldsection_3_8">

    <t>
      The properties and parameters defined by this document can be extended.
      Non-standard, private properties and parameters with a name starting with
      "X-" may be defined bilaterally between two cooperating agents without
      outside registration or standardization.
    </t>

  </section>

</section>

<section title="Synchronization" anchor="synchronization">

  <t>vCard data often needs to be synchronized between devices. In this context,
    synchronization is defined as the intelligent merging of two representations
    of the same object. vCard 4.0 includes mechanisms to aid this process.</t>

  <section title="Mechanisms">

    <t>Two mechanisms are available: the UID property is used to match
      multiple instances of the same vCard, while the PID parameter is used to
      match multiple instances of the same property.</t>

    <t>The term "matching" is used here to mean recognizing that two instances
      are in fact representations of the same object. For example, a single
      vCard that is shared with someone results in two vCard instances. After
      they have evolved separately, they still represent the same object, and
      therefore may be matched by a synchronization engine.</t>

    <section title="Matching vCard Instances">
      <t>vCard instances for which the UID properties (<xref target="UID"/>) are
        equivalent MUST be matched. Equivalence is determined as specified in
        <xref target="RFC3986"/>, Section 6.</t>

      <t>In all other cases, vCard instances MAY be matched at the discretion of
        the synchronization engine.</t>
    </section>

    <section title="Matching Property Instances" anchor="propmatching">
      <t>Property instances belonging to unmatched vCards MUST NOT be
        matched.</t>

      <t>Property instances whose name (e.g. EMAIL, TEL, etc.) is not the same
        MUST NOT be matched.</t>

      <t>Property instances whose name is CLIENTPIDMAP are handled separately
        and MUST NOT be matched. The synchronization MUST ensure that there is
        consistency of CLIENTPIDMAPs among matched vCard instances.</t>

      <t>Property instances belonging to matched vCards, whose name is the same,
        and whose maximum cardinality is 1 MUST be matched.</t>

      <t>Property instances belonging to matched vCards, whose name is the same,
        and whose PID parameters match MUST be matched. See <xref
          target="pidmatching"/> for details on PID matching.</t>

      <t>In all other cases, property instances MAY be matched at the discretion
        of the synchronization engine.</t>
    </section>

    <section title="PID Matching" anchor="pidmatching">
      <t>Two PID values for which the first fields are equivalent represent the
        same local value.</t>

      <t>Two PID values representing the same local value and for which the
        second fields point to CLIENTPIDMAP properties whose second field URIs
        are equivalent (as specified in <xref target="RFC3986"/>, Section 6)
        also represent the same global value.</t>

      <t>PID parameters for which at least one pair of their values represent
        the same global value MUST be matched.</t>

      <t>In all other cases, PID parameters MAY be matched at the discretion of
        the synchronization engine.</t>

      <figure>
        <preamble>
          For example, PID value "5.1", in the first vCard below, and PID value
          "5.2", in the second vCard below, represent the same global value.
        </preamble>
        <artwork>
  BEGIN:VCARD
  VERSION:4.0
  EMAIL;PID=4.2,5.1:jdoe@example.com
  CLIENTPIDMAP:1;urn:uuid:3eef374e-7179-4196-a914-27358c3e6527
  CLIENTPIDMAP:2;urn:uuid:42bcd5a7-1699-4514-87b4-056edf68e9cc
  END:VCARD

  BEGIN:VCARD
  VERSION:4.0
  EMAIL;PID=5.1,5.2:john@example.com
  CLIENTPIDMAP:1;urn:uuid:0c75c629-6a8d-4d5e-a07f-1bb35846854d
  CLIENTPIDMAP:2;urn:uuid:3eef374e-7179-4196-a914-27358c3e6527
  END:VCARD
        </artwork>
      </figure>
    </section>

  </section>

  <section title="Example">
    <section title="Creation">
      <t>The following simple vCard is first created on a given device.</t>
      <figure>
        <artwork>
  BEGIN:VCARD
  VERSION:4.0
  UID:urn:uuid:4fbe8971-0bc3-424c-9c26-36c3e1eff6b1
  FN;PID=1.1:J. Doe
  N:Doe;J.;;;
  EMAIL;PID=1.1:jdoe@example.com
  CLIENTPIDMAP:1;urn:uuid:53e374d9-337e-4727-8803-a1e9c14e0556
  END:VCARD
        </artwork>
      </figure>
      <t>This new vCard is assigned the UID
        "urn:uuid:4fbe8971-0bc3-424c-9c26-36c3e1eff6b1" by the creating device.
        The FN and EMAIL properties are assigned the same local value of 1, and
        this value is given global context by associating it with
        "urn:uuid:53e374d9-337e-4727-8803-a1e9c14e0556", which represents the
        creating device. We are at liberty to reuse the same local value since
        instances of different properties will never be matched. The N property
        has no PID because it is forbidden by its maximum cardinality of 1.</t>
    </section>

    <section title="Initial Sharing">
      <t>This vCard is shared with a second device. Upon inspecting the UID
        property, the second device understands that this is a new vCard
        (i.e. unmatched) and thus the synchronization results in a simple
        copy.</t>
    </section>

    <section title="Adding and Sharing a Property">
      <t>A new phone number is created on the first device, then the vCard is
        shared with the second device. This is what the second device
        receives:</t>
      <figure>
        <artwork>
  BEGIN:VCARD
  VERSION:4.0
  UID:urn:uuid:4fbe8971-0bc3-424c-9c26-36c3e1eff6b1
  FN;PID=1.1:J. Doe
  N:Doe;J.;;;
  EMAIL;PID=1.1:jdoe@example.com
  TEL;PID=1.1;VALUE=uri:tel:+1-555-555-5555
  CLIENTPIDMAP:1;urn:uuid:53e374d9-337e-4727-8803-a1e9c14e0556
  END:VCARD
        </artwork>
      </figure>
      <t>Upon inspecting the UID property, the second device matches the vCard
        it received to the vCard that it already has stored. It then starts
        comparing the properties of the two vCards in same-named pairs.</t>
      <t>The FN properties are matched because the PID parameters have the
        same global value. Since the property value is the same, no update takes
        place.</t>
      <t>The N properties are matched automatically because their maximum
        cardinality is 1. Since the property value is the same, no update takes
        place.</t>
      <t>The EMAIL properties are matched because the PID parameters have the
        same global value. Since the property value is the same, no update takes
        place.</t>
      <t>The TEL property in the new vCard is not matched to any in the stored
        vCard because no property in the stored vCard has the same name.
        Therefore, this property is copied from the new vCard to the stored
        vCard.</t>
      <t>The CLIENTPIDMAP property is handled separately by the synchronization
        engine. It ensures that it is consistent with the stored one. If it was
        not, the results would be up to the synchronization engine, and thus
        undefined by this document.</t>
    </section>

    <section title="Simultaneous Editing">
      <t>A new email address and a new phone number are added to the vCard on
        each of the two devices, and then a new synchronization event happens.
        Here are the vCards that are communicated to each other:</t>
      <figure>
        <artwork>
  BEGIN:VCARD
  VERSION:4.0
  UID:urn:uuid:4fbe8971-0bc3-424c-9c26-36c3e1eff6b1
  FN;PID=1.1:J. Doe
  N:Doe;J.;;;
  EMAIL;PID=1.1:jdoe@example.com
  EMAIL;PID=2.1:boss@example.com
  TEL;PID=1.1;VALUE=uri:tel:+1-555-555-5555
  TEL;PID=2.1;VALUE=uri:tel:+1-666-666-6666
  CLIENTPIDMAP:1;urn:uuid:53e374d9-337e-4727-8803-a1e9c14e0556
  END:VCARD

  BEGIN:VCARD
  VERSION:4.0
  UID:urn:uuid:4fbe8971-0bc3-424c-9c26-36c3e1eff6b1
  FN;PID=1.1:J. Doe
  N:Doe;J.;;;
  EMAIL;PID=1.1:jdoe@example.com
  EMAIL;PID=2.2:ceo@example.com
  TEL;PID=1.1;VALUE=uri:tel:+1-555-555-5555
  TEL;PID=2.2;VALUE=uri:tel:+1-666-666-6666
  CLIENTPIDMAP:1;urn:uuid:53e374d9-337e-4727-8803-a1e9c14e0556
  CLIENTPIDMAP:2;urn:uuid:1f762d2b-03c4-4a83-9a03-75ff658a6eee
  END:VCARD
        </artwork>
      </figure>
      <t>On the first device, the same PID source identifier (1) is reused for
        the new EMAIL and TEL properties. On the second device, a new source
        identifier (2) is generated, and a corresponding CLIENTPIDMAP property
        is created. It contains the second device's identifier,
        "urn:uuid:1f762d2b-03c4-4a83-9a03-75ff658a6eee".</t>
      <t>The new EMAIL properties are unmatched on both sides since the PID global
        value is new in both cases. The sync thus results in a copy on both
        sides.</t>
      <t>Although the situation appears to be the same for the TEL properties,
        in this case the synchronization engine is particularly smart and
        matches the two new TEL properties even though their PID global values
        are different. Note that in this case, the rules of section <xref
          target="propmatching"/> state that two properties MAY be matched at
        the discretion of the synchronization engine. Therefore, the two
        properties are merged.</t>
      <t>All this results in the following vCard which is stored on both
        devices:</t>
      <figure>
        <artwork>
  BEGIN:VCARD
  VERSION:4.0
  UID:urn:uuid:4fbe8971-0bc3-424c-9c26-36c3e1eff6b1
  FN:J. Doe
  N:Doe;J.;;;
  EMAIL;PID=1.1:jdoe@example.com
  EMAIL;PID=2.1:boss@example.com
  EMAIL;PID=2.2:ceo@example.com
  TEL;PID=1.1;VALUE=uri:tel:+1-555-555-5555
  TEL;PID=2.1,2.2;VALUE=uri:tel:+1-666-666-6666
  CLIENTPIDMAP:1;urn:uuid:53e374d9-337e-4727-8803-a1e9c14e0556
  CLIENTPIDMAP:2;urn:uuid:1f762d2b-03c4-4a83-9a03-75ff658a6eee
  END:VCARD
        </artwork>
      </figure>
    </section>

    <section title="Global Context Simplification">
      <t>The two devices finish their synchronization procedure by simplifying
        their global contexts. Since they haven't talked to any other device,
        the following vCard is for all purposes equivalent to the above. It is
        also shorter.</t>
      <figure>
        <artwork>
  BEGIN:VCARD
  VERSION:4.0
  UID:urn:uuid:4fbe8971-0bc3-424c-9c26-36c3e1eff6b1
  FN:J. Doe
  N:Doe;J.;;;
  EMAIL;PID=1.1:jdoe@example.com
  EMAIL;PID=2.1:boss@example.com
  EMAIL;PID=3.1:ceo@example.com
  TEL;PID=1.1;VALUE=uri:tel:+1-555-555-5555
  TEL;PID=2.1;VALUE=uri:tel:+1-666-666-6666
  CLIENTPIDMAP:1;urn:uuid:53e374d9-337e-4727-8803-a1e9c14e0556
  END:VCARD
        </artwork>
      </figure>
      <t>The details of global context simplification are unspecified by this
        document. They are left up to the synchronization engine. This example
        is merely intended to illustrate the possibility, which investigating
        would be, in the authors' opinion, worthwhile.</t>
    </section>
  </section>

</section>

<section title="Example: Authors' vCards" anchor="oldsection_7_">

  <figure>
  <artwork>
 BEGIN:VCARD
 VERSION:4.0
 FN:Simon Perreault
 N:Perreault;Simon;;;ing. jr,M.Sc.
 BDAY:--0203
 ANNIVERSARY:20090808T1430-0500
 GENDER:M
 LANG;PREF=1:fr
 LANG;PREF=2:en
 ORG;TYPE=work:Viagénie
 ADR;TYPE=work:;Suite D2-630;2875 Laurier;
  Québec;QC;G1V 2M2;Canada
 TEL;VALUE=uri;TYPE="work,voice";PREF=1:tel:+1-418-656-9254;ext=102
 TEL;VALUE=uri;TYPE="work,cell,voice,video,text":tel:+1-418-262-6501
 EMAIL;TYPE=work:simon.perreault@viagenie.ca
 GEO;TYPE=work:geo:46.772673,-71.282945
 KEY;TYPE=work;VALUE=uri:
  http://www.viagenie.ca/simon.perreault/simon.asc
 TZ:-0500
 END:VCARD
  </artwork>
  </figure>

  <figure>
  <artwork>
 BEGIN:VCARD
 VERSION:4.0
 FN:Pete Resnick
 N:Resnick;Pete;;;
 GENDER:M
 ORG;TYPE=work:QUALCOMM Incorporated
 ADR;TYPE=work:;;5775 Morehouse Drive;San Diego;CA;92121-1714;US
 TEL;VALUE=uri;TYPE="work,voice":tel:+1-858-651-4478
 EMAIL;TYPE=work:presnick@qualcomm.com
 URL;TYPE=work:http://www.qualcomm.com/~presnick/
 END:VCARD
  </artwork>
  </figure>

</section>

<section title="Security Considerations" anchor="security_considerations">
  <t>
    <list style="symbols">
      <t>Internet mail is often used to transport vCards and is subject to many
        well known security attacks, including monitoring, replay, and forgery.
        Care should be taken by any directory service in allowing information to
        leave the scope of the service itself, where any access controls or
        confidentiality can no longer be guaranteed.  Applications should also
        take care to display directory data in a "safe" environment</t>
      <t>vCards can carry cryptographic keys or certificates, as described in
        <xref target="KEY"/>.</t>
      <t>The vCard objects have no inherent authentication or privacy, but
        can easily be carried by any security mechanism that transfers MIME
        objects with authentication or privacy (e.g. S/MIME <xref
          target="RFC5751"/>, OpenPGP <xref target="RFC4880"/>). In cases where
        the threat of "spoofed" vCard information is a concern, the vCard SHOULD
        BE transported using one of these secure mechanisms.</t>
      <t>The information in a vCard may become out of date. In cases where the
        vitality of data is important to an originator of a vCard, the SOURCE
        property (<xref target="SOURCE"/>) SHOULD be specified. In addition, the
        "REV" type described in section <xref target="REV"/> can be specified to
        indicate the last time that the vCard data was updated.</t>
    </list>
  </t>
</section>

<section title="IANA Considerations">

<section title="MIME Type Registration" anchor="mime_type_registration">

  <t>IANA is asked to register the following MIME Media Type (in
    <http://www.iana.org/assignments/media-types/>).</t>

  <t>
    <list style="hanging">
      <t hangText="To:">ietf-types@iana.org</t>

      <t hangText="Subject:">Registration of media type text/vcard</t>

      <t hangText="Type name:">text</t>

      <t hangText="Subtype name:">vcard</t>

      <t hangText="Required parameters:">none</t>

      <t hangText="Optional parameters:">version</t>
      <t>The "version" parameter is to be interpreted identically as the VERSION
        vCard property. If this parameter is present, all vCards in a text/vcard
        body part MUST have a VERSION property with value identical to that of
        this MIME parameter.</t>
      <t>"charset": as defined for text/plain <xref target="RFC2046"/>;
        encodings other than UTF-8 <xref target="RFC3629"/> MUST NOT be used.</t>

      <t hangText="Encoding considerations:">8bit</t>

      <t hangText="Security considerations:">See <xref
          target="security_considerations"/>.</t>

      <t hangText="Interoperability considerations:">The text/vcard media type
        is intended to identify vCard data of any version.  There are older
        specifications of vCard <xref target="RFC2426"/><xref
          target="vCard21"/> still in common use. While
        these formats are similar, they are not strictly compatible. In general,
        it is necessary to inspect the value of the VERSION property (see <xref
          target="VERSION"/>) for identifying the standard to which a
        given vCard object conforms.</t>

      <t>In addition, the following media types are known to have been used to
        refer to vCard data. They should be considered deprecated in favor of
        text/vcard.
        <list style="symbols">
          <t>text/directory</t>
          <t>text/directory; profile=vcard</t>
          <t>text/x-vcard</t>
        </list>
      </t>

      <t hangText="Published specification:">draft-ietf-vcarddav-vcardrev-19</t>

      <t hangText="Applications that use this media type:">They are numerous,
        diverse, and include mail user agents, instant messaging clients,
        address book applications, directory servers, customer relationship
        management software.</t>

      <t hangText="Additional information:">
        <list style="hanging">
          <t hangText="Magic number(s):"></t>
          <t hangText="File extension(s):">.vcf .vcard</t>
          <t hangText="Macintosh file type code(s):"></t>
        </list>
      </t>

      <t hangText="Person & email address to contact for further
        information:">Simon Perreault <simon.perreault@viagenie.ca></t>

      <t hangText="Intended usage:">COMMON</t>

      <t hangText="Restrictions on usage:">none</t>

      <t hangText="Author:">Simon Perreault</t>

      <t hangText="Change controller:">IETF</t>

    </list>
  </t>

</section>

  <section title="Registering New vCard Elements" anchor="iana_registration">

    <t>This section defines the process for registering new or modified vCard
      elements (i.e. properties, parameters, value data types, and values) with
      IANA. It does not contain any immediate IANA actions.</t>

    <section title="Registration Procedure">
      <t>The IETF will create a mailing list,
        <eref target="mailto:vcard@ietf.org">vcard@ietf.org</eref>, which can
        be used for public discussion of vCard element proposals prior to
        registration.  Use of the mailing list is strongly encouraged.  The IESG
        will appoint a designated expert who will monitor the
        <eref target="mailto:vcard@ietf.org">vcard@ietf.org</eref> mailing list
        and review registrations.</t>

      <t>Registration of new vCard elements MUST be reviewed by the
        designated expert and published in an RFC.  A Standard Tracks RFC is
        REQUIRED for the registration of new value data types that modify
        existing properties.  A Standard Tracks RFC is also REQUIRED for
        registration of vCard elements that modify vCard elements previously
        documented in a Standard Tracks RFC.</t>

      <t>The registration procedure begins when a completed registration
        template, defined in the sections below, is sent to
        <eref target="mailto:vcard@ietf.org">vcard@ietf.org</eref> and
        <eref target="mailto:iana@iana.org">iana@iana.org</eref>.  The
        designated expert is expected to tell IANA and the submitter of the
        registration within two weeks whether the registration is approved,
        approved with minor changes, or rejected with cause.  When a
        registration is rejected with cause, it can be re-submitted if the
        concerns listed in the cause are addressed.  Decisions made by the
        designated expert can be appealed to the IESG Applications Area
        Director, then to the IESG.  They follow the normal appeals procedure
        for IESG decisions.</t>

      <t>Once the registration procedure concludes successfully, IANA creates or
        modifies the corresponding record in the vCard registry. The completed
        registration template is discarded.</t>

      <t>An RFC specifying new vCard elements MUST include the completed
        registration templates, which MAY be expanded with additional
        information. These completed templates will go in the body of
        the document, and SHOULD NOT be included or repeated in the
        IANA Considerations section.</t>

      <t>Finally, note that there is an XML representation for vCard defined in
        <xref target="I-D.ietf-vcarddav-vcardxml"/>. An XML representation
        SHOULD be defined for new vCard objects.</t>
    </section>

    <section title="Vendor Namespace">

      <t>The vendor namespace is used for vCard elements associated with
        commercially available products.  "Vendor" or "producer" are construed
        as equivalent and very broadly in this context.</t>

      <t>A registration may be placed in the vendor namespace by anyone who
        needs to interchange files associated with the particular product.
        However, the registration formally belongs to the vendor or organization
        handling the vCard elements in the namespace being registered.  Changes
        to the specification will be made at their request, as discussed in
        subsequent sections.</t>

      <t>vCard elements belonging to the vendor namespace will be distinguished
        by the "VND-" prefix.  This is followed by an IANA-registered Private
        Enterprise Number (PEN), a dash, and a vCard element designation of the
        vendor's choosing (e.g., "VND-123456-MUDPIE").</t>

      <t>While public exposure and review of vCard elements to be registered in
        the vendor namespace is not required, using the <eref
          target="mailto:vcard@ietf.org">vcard@ietf.org</eref> mailing list for
        review is strongly encouraged to improve the quality of those
        specifications.  Registrations in the vendor namespace may be submitted
        directly to the IANA.</t>

    </section>

    <section title="Registration Template for Properties">
      <t>A property is defined by completing the following template.</t>
      <t>
        <list style="hanging">
          <t hangText="Namespace:">Empty for the global namespace, "VND-NNNN-"
            for a vendor-specific property (where NNNN is replaced by the
            vendor's PEN).</t>
          <t hangText="Property name:">The name of the property.</t>
          <t hangText="Purpose:">The purpose of the property.  Give a short but
            clear description.</t>
          <t hangText="Value type:">Any of the valid value types for the
            property value needs to be specified.  The default value type also
            needs to be specified.</t>
          <t hangText="Cardinality:">See <xref target="properties"/>.</t>
          <t hangText="Property parameters:">Any of the valid property
            parameters for the property MUST be specified.</t>
          <t hangText="Description:">Any special notes about the property, how
            it is to be used, etc.</t>
          <t hangText="Format definition:">The ABNF for the property definition
            needs to be specified.</t>
          <t hangText="Example(s):">One or more examples of instances of the
            property needs to be specified.</t>
        </list>
      </t>
    </section>

    <section title="Registration Template for Parameters">
      <t>A parameter is defined by completing the following template.</t>
      <t>
        <list style="hanging">
          <t hangText="Namespace:">Empty for the global namespace, "VND-NNNN-"
            for a vendor-specific property (where NNNN is replaced by the
            vendor's PEN).</t>
          <t hangText="Parameter name:">The name of the parameter.</t>
          <t hangText="Purpose:">The purpose of the parameter.  Give a short but
            clear description.</t>
          <t hangText="Description:">Any special notes about the parameter, how
            it is to be used, etc.</t>
          <t hangText="Format definition:">The ABNF for the parameter definition
            needs to be specified.</t>
          <t hangText="Example(s):">One or more examples of instances of the
            parameter needs to be specified.</t>
        </list>
      </t>
    </section>

    <section title="Registration Template for Value Data Types">
      <t>A value data type is defined by completing the following template.</t>
      <t>
        <list style="hanging">
          <t hangText="Value name:">The name of the value type.</t>
          <t hangText="Purpose:">The purpose of the value type.  Give a short
            but clear description.</t>
          <t hangText="Description:">Any special notes about the value type, how
            it is to be used, etc.</t>
          <t hangText="Format definition:">The ABNF for the value type
            definition needs to be specified.</t>
          <t hangText="Example(s):">One or more examples of instances of the
            value type needs to be specified.</t>
        </list>
      </t>
    </section>

    <section title="Registration Template for Values">
      <t>A value is defined by completing the following template.</t>
      <t>
        <list style="hanging">
          <t hangText="Value:">The value literal.</t>
          <t hangText="Purpose:">The purpose of the value.  Give a short but
            clear description.</t>
          <t hangText="Conformance:">The vCard properties and/or parameters
            that can take this value needs to be specified.</t>
          <t hangText="Example(s):">One or more examples of instances of the
            value needs to be specified.</t>
        </list>
      </t>
      <t>The following is a fictitious example of a registration of a vCard
        value:</t>
      <t>
        <list style="hanging">
          <t hangText="Value:">supervisor</t>
          <t hangText="Purpose:">It means that the related entity is the
            direct hierarchical superior (i.e. supervisor or manager) of the
            entity this vCard represents.</t>
          <t hangText="Conformance:">This value can be used with the "TYPE"
            parameter applied on the "RELATED" property.</t>
          <t hangText="Example(s):"/>
        </list>
      </t>
      <t>
        <figure>
          <artwork>
RELATED;TYPE=supervisor:urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6
          </artwork>
        </figure>
      </t>
    </section>

  </section>

  <section anchor="tables" title="Initial vCard Elements Registries">

    <t>The IANA is requested to create and maintain the following registries for
      vCard elements with pointers to appropriate reference documents. The
      registries will be grouped together under the heading "vCard
      Elements".</t>

    <section title="Properties Registry">
      <t>The following table is to be used to initialize the properties
        registry.</t>
      <texttable>
        <ttcol align="left">Namespace</ttcol>
        <ttcol align="left">Property</ttcol>
        <ttcol align="left">Reference</ttcol>

        <c></c>
        <c>SOURCE</c>
        <c>RFCXXXX, <xref target="SOURCE"/></c>

        <c></c>
        <c>KIND</c>
        <c>RFCXXXX, <xref target="KIND"/></c>

        <c></c>
        <c>XML</c>
        <c>RFCXXXX, <xref target="XML"/></c>

        <c></c>
        <c>FN</c>
        <c>RFCXXXX, <xref target="FN"/></c>

        <c></c>
        <c>N</c>
        <c>RFCXXXX, <xref target="N"/></c>

        <c></c>
        <c>NICKNAME</c>
        <c>RFCXXXX, <xref target="NICKNAME"/></c>

        <c></c>
        <c>PHOTO</c>
        <c>RFCXXXX, <xref target="PHOTO"/></c>

        <c></c>
        <c>BDAY</c>
        <c>RFCXXXX, <xref target="BDAY"/></c>

        <c></c>
        <c>ANNIVERSARY</c>
        <c>RFCXXXX, <xref target="ANNIVERSARY"/></c>

        <c></c>
        <c>GENDER</c>
        <c>RFCXXXX, <xref target="GENDER"/></c>

        <c></c>
        <c>ADR</c>
        <c>RFCXXXX, <xref target="ADR"/></c>

        <c></c>
        <c>TEL</c>
        <c>RFCXXXX, <xref target="TEL"/></c>

        <c></c>
        <c>EMAIL</c>
        <c>RFCXXXX, <xref target="EMAIL"/></c>

        <c></c>
        <c>IMPP</c>
        <c>RFCXXXX, <xref target="IMPP"/></c>

        <c></c>
        <c>LANG</c>
        <c>RFCXXXX, <xref target="LANG"/></c>

        <c></c>
        <c>TZ</c>
        <c>RFCXXXX, <xref target="TZ"/></c>

        <c></c>
        <c>GEO</c>
        <c>RFCXXXX, <xref target="GEO"/></c>

        <c></c>
        <c>TITLE</c>
        <c>RFCXXXX, <xref target="TITLE"/></c>

        <c></c>
        <c>ROLE</c>
        <c>RFCXXXX, <xref target="ROLE"/></c>

        <c></c>
        <c>LOGO</c>
        <c>RFCXXXX, <xref target="LOGO"/></c>

        <c></c>
        <c>ORG</c>
        <c>RFCXXXX, <xref target="ORG"/></c>

        <c></c>
        <c>MEMBER</c>
        <c>RFCXXXX, <xref target="MEMBER"/></c>

        <c></c>
        <c>RELATED</c>
        <c>RFCXXXX, <xref target="RELATED"/></c>

        <c></c>
        <c>CATEGORIES</c>
        <c>RFCXXXX, <xref target="CATEGORIES"/></c>

        <c></c>
        <c>NOTE</c>
        <c>RFCXXXX, <xref target="NOTE"/></c>

        <c></c>
        <c>PRODID</c>
        <c>RFCXXXX, <xref target="PRODID"/></c>

        <c></c>
        <c>REV</c>
        <c>RFCXXXX, <xref target="REV"/></c>

        <c></c>
        <c>SOUND</c>
        <c>RFCXXXX, <xref target="SOUND"/></c>

        <c></c>
        <c>UID</c>
        <c>RFCXXXX, <xref target="UID"/></c>

        <c></c>
        <c>CLIENTPIDMAP</c>
        <c>RFCXXXX, <xref target="CLIENTPIDMAP"/></c>

        <c></c>
        <c>URL</c>
        <c>RFCXXXX, <xref target="URL"/></c>

        <c></c>
        <c>VERSION</c>
        <c>RFCXXXX, <xref target="VERSION"/></c>

        <c></c>
        <c>KEY</c>
        <c>RFCXXXX, <xref target="KEY"/></c>

        <c></c>
        <c>FBURL</c>
        <c>RFCXXXX, <xref target="FBURL"/></c>

        <c></c>
        <c>CALADRURI</c>
        <c>RFCXXXX, <xref target="CALADRURI"/></c>

        <c></c>
        <c>CALURI</c>
        <c>RFCXXXX, <xref target="CALURI"/></c>
      </texttable>
    </section>

    <section title="Parameters Registry">
      <t>The following table is to be used to initialize the parameters
        registry.</t>
      <texttable>
        <ttcol align="left">Namespace</ttcol>
        <ttcol align="left">Parameter</ttcol>
        <ttcol align="left">Reference</ttcol>

        <c></c>
        <c>LANGUAGE</c>
        <c>RFCXXXX, <xref target="LANGUAGE"/></c>

        <c></c>
        <c>VALUE</c>
        <c>RFCXXXX, <xref target="VALUE"/></c>

        <c></c>
        <c>PREF</c>
        <c>RFCXXXX, <xref target="PREF"/></c>

        <c></c>
        <c>ALTID</c>
        <c>RFCXXXX, <xref target="ALTID"/></c>

        <c></c>
        <c>PID</c>
        <c>RFCXXXX, <xref target="PID"/></c>

        <c></c>
        <c>TYPE</c>
        <c>RFCXXXX, <xref target="TYPE"/></c>

        <c></c>
        <c>MEDIATYPE</c>
        <c>RFCXXXX, <xref target="MEDIATYPE"/></c>

        <c></c>
        <c>CALSCALE</c>
        <c>RFCXXXX, <xref target="CALSCALE"/></c>

        <c></c>
        <c>SORT-AS</c>
        <c>RFCXXXX, <xref target="SORT-AS"/></c>

        <c></c>
        <c>GEO</c>
        <c>RFCXXXX, <xref target="GEO-param"/></c>

        <c></c>
        <c>TZ</c>
        <c>RFCXXXX, <xref target="TZ-param"/></c>
      </texttable>
    </section>

    <section title="Value Data Types Registry">
      <t>The following table is to be used to initialize the parameters
        registry.</t>
      <texttable>
        <ttcol align="left">Value Data Type</ttcol>
        <ttcol align="left">Reference</ttcol>

        <c>BOOLEAN</c>
        <c>RFCXXXX, <xref target="BOOLEAN"/></c>

        <c>DATE</c>
        <c>RFCXXXX, <xref target="DATE"/></c>

        <c>TIME</c>
        <c>RFCXXXX, <xref target="TIME"/></c>

        <c>DATE-TIME</c>
        <c>RFCXXXX, <xref target="DATE_TIME"/></c>

        <c>DATE-AND-OR-TIME</c>
        <c>RFCXXXX, <xref target="DATE_AND_OR_TIME"/></c>

        <c>TIMESTAMP</c>
        <c>RFCXXXX, <xref target="TIMESTAMP"/></c>

        <c>FLOAT</c>
        <c>RFCXXXX, <xref target="FLOAT"/></c>

        <c>INTEGER</c>
        <c>RFCXXXX, <xref target="INTEGER"/></c>

        <c>TEXT</c>
        <c>RFCXXXX, <xref target="TEXT"/></c>

        <c>URI</c>
        <c>RFCXXXX, <xref target="URI"/></c>

        <c>LANGUAGE-TAG</c>
        <c>RFCXXXX, <xref target="LANGUAGE-TAG"/></c>
      </texttable>
    </section>

    <section title="Values Registries" anchor="iana_values">
      <t>Separate tables will be used for property and parameter values.</t>

      <t>The following table is to be used to initialize the property values
        registry.</t>
      <texttable>
        <ttcol align="left">Property</ttcol>
        <ttcol align="left">Value</ttcol>
        <ttcol align="left">Reference</ttcol>

        <c>BEGIN</c>
        <c>VCARD</c>
        <c>RFCXXXX, <xref target="BEGIN"/></c>

        <c>END</c>
        <c>VCARD</c>
        <c>RFCXXXX, <xref target="END"/></c>

        <c>KIND</c>
        <c>individual</c>
        <c>RFCXXXX, <xref target="KIND"/></c>

        <c>KIND</c>
        <c>group</c>
        <c>RFCXXXX, <xref target="KIND"/></c>

        <c>KIND</c>
        <c>org</c>
        <c>RFCXXXX, <xref target="KIND"/></c>

        <c>KIND</c>
        <c>location</c>
        <c>RFCXXXX, <xref target="KIND"/></c>
      </texttable>

      <t>The following table is to be used to initialize the parameter values
        registry.</t>
      <texttable>
        <ttcol align="left">Property</ttcol>
        <ttcol align="left">Parameter</ttcol>
        <ttcol align="left">Value</ttcol>
        <ttcol align="left">Reference</ttcol>

        <c>FN, NICKNAME, PHOTO, ADR, TEL, EMAIL, IMPP, LANG, TZ, GEO,
          TITLE, ROLE, LOGO, ORG, RELATED, CATEGORIES, NOTE, SOUND, URL, KEY,
          FBURL, CALADRURI, and CALURI</c>
        <c>TYPE</c>
        <c>work</c>
        <c>RFCXXXX, <xref target="TYPE"/></c>

        <c>FN, NICKNAME, PHOTO, ADR, TEL, EMAIL, IMPP, LANG, TZ, GEO,
          TITLE, ROLE, LOGO, ORG, RELATED, CATEGORIES, NOTE, SOUND, URL, KEY,
          FBURL, CALADRURI, and CALURI</c>
        <c>TYPE</c>
        <c>home</c>
        <c>RFCXXXX, <xref target="TYPE"/></c>

        <c>TEL</c>
        <c>TYPE</c>
        <c>text</c>
        <c>RFCXXXX, <xref target="TEL"/></c>

        <c>TEL</c>
        <c>TYPE</c>
        <c>voice</c>
        <c>RFCXXXX, <xref target="TEL"/></c>

        <c>TEL</c>
        <c>TYPE</c>
        <c>fax</c>
        <c>RFCXXXX, <xref target="TEL"/></c>

        <c>TEL</c>
        <c>TYPE</c>
        <c>cell</c>
        <c>RFCXXXX, <xref target="TEL"/></c>

        <c>TEL</c>
        <c>TYPE</c>
        <c>video</c>
        <c>RFCXXXX, <xref target="TEL"/></c>

        <c>TEL</c>
        <c>TYPE</c>
        <c>pager</c>
        <c>RFCXXXX, <xref target="TEL"/></c>

        <c>BDAY, ANNIVERSARY</c>
        <c>CALSCALE</c>
        <c>gregorian</c>
        <c>RFCXXXX, <xref target="BDAY"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>contact</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>acquaintance</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>friend</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>met</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>co-worker</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>colleague</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>co-resident</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>neighbor</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>child</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>parent</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>sibling</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>spouse</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>kin</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>muse</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>crush</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>date</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>sweetheart</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>me</c>
        <c>RFCXXXX, <xref target="RELATED"/> and <xref target="xfn"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>agent</c>
        <c>RFCXXXX, <xref target="RELATED"/></c>

        <c>RELATED</c>
        <c>TYPE</c>
        <c>emergency</c>
        <c>RFCXXXX, <xref target="RELATED"/></c>
      </texttable>
    </section>

  </section>

</section>

<section title="Acknowledgements">
  <t>
    The authors would like to thank Tim Howes, Mark Smith, and Frank Dawson, the original
    authors of <xref target="RFC2425"/> and <xref target="RFC2426"/>, Pete
    Resnick, who got this effort started and provided help along the way, as
    well as the following individuals who have participated in the drafting,
    review and discussion of this memo:
  </t>
  <t>
    Aki Niemi, Andy Mabbett, Alexander Mayrhofer, Alexey Melnikov, Anil
    Srivastava, Barry Leiba, Ben Fortuna, Bernard Desruisseaux, Bernie
    Hoeneisen, Bjoern Hoehrmann, Caleb Richarson, Chris Bryant, Chris Newman,
    Cyrus Daboo, Daisuke Miyakawa, Dan Brickley, Dan Mosedale, Dany Cauchie,
    Darryl Champagne, Dave Thewlis, Filip Navara, Florian Zeitz, Helge Hess,
    Jari Urpalainen, Javier Godoy, Jean-Luc Schellens, Joe Hildebrand, José Luis
    Gayosso, Joseph Smarr, Julian Reschke, Kepeng Li, Kevin Marks, Kevin Wu Won,
    Kurt Zeilenga.  Lisa Dusseault, Marc Blanchet, Mark Paterson, Markus Lorenz,
    Michael Haardt, Mike Douglass, Nick Levinson, Peter K. Sheerin, Peter
    Mogensen, Peter Saint-Andre, Renato Iannella, Rohit Khare, Sly Gryphon,
    Stéphane Bortzmeyer, Tantek Celik, and Zoltan Ordogh.
  </t>
</section>

</middle>

<back>
  <references title='Normative References'>
    <?rfc include="reference.ISO.8601.2004"?>
    <?rfc include="reference.ISO.8601.2000"?>

   &ccitte1631988;

   &ccittx1211988;

   &ccittx5201988;

   &ccittx5211988;

   &rfc2045;

   &rfc2046;

   &rfc2119;

   &rfc2739;

   &rfc5322;

   &rfc3629;

   &rfc3966;

   &rfc3986;

   &rfc4122;

   &rfc4288;

    &rfc5545;

    &rfc5546;

   &rfc5646;

   &rfc5234;

  <reference anchor="xfn" target="http://gmpg.org/xfn/11">
    <front>
      <title>XHTML Friends Network 1.1</title>
      <author initials="T." surname="Çelik" fullname="Tantek Çelik"/>
      <author initials="M." surname="Mullenweg" fullname="Matthew Mullenweg"/>
      <author initials="E." surname="Meyer" fullname="Eric Meyer"/>
    </front>
  </reference>

    &geo-uri;

    <?rfc include="reference.I-D.draft-ietf-vcarddav-vcardxml"?>

    &xml;

  </references>

  <references title="Informative References">

   &rfc1738;

   &rfc2425;
   &rfc2426;

	<reference anchor='vCard21'>
	<front>
	<title>vCard - The Electronic Business Card Version 2.1</title>
	<author>
	<organization>Internet Mail Consortium</organization>
	</author>
	<date year='September' day='18' month='September' />
	</front>
	</reference>

   &rfc4770;

    <reference anchor='ISO9070'>
      <front>
        <title>ISO 9070, Information Processing - SGML support facilities -
          Registration Procedures for Public Text Owner Identifiers</title>
        <author>
          <organization>The International Organization for
            Standardization</organization>
        </author>
        <date year='1991' month='April' />
      </front>
    </reference>

    &rfc2397;

    &rfc2616;

    &rfc3282;

    &rfc3406;

    &rfc4880;

    &rfc5751;

    &rfc6068;

    &I-D.ietf-eai-rfc5335bis;

    <?rfc include="reference.tz"?>

  </references>

  <section title="Differences from RFCs 2425 and 2426" anchor="diff">
    <t>
      This appendix contains a list of changes that have been made in the vCard
      specification from RFCs 2425 and 2426.
    </t>

    <section title="New Structure">
      <t>
        <list style="symbols">
          <t><xref target="RFC2425"/> and <xref target="RFC2426"/> have been
            merged.</t>
          <t>vCard is now not only a MIME type but a stand-alone format.</t>
          <t>A proper MIME type registration form has been included.</t>
          <t>UTF-8 is now the default character set.</t>
          <t>New vCard elements can be registered from IANA.</t>
          <t>Expanded text on character set.</t>
        </list>
      </t>
    </section>

    <section title="Removed Features">
      <t>
        <list style="symbols">
          <t>The CONTEXT and CHARSET parameters are no more.</t>
          <t>The NAME, MAILER, LABEL, and CLASS properties are no more.</t>
          <t>The "intl", "dom", "postal", and "parcel" TYPE parameter values for
            the ADR property have been removed.</t>
          <t>Inline vCards (such as the value of the AGENT property) are no
            longer supported.</t>
          <t>In the N property, each component may now contain multiple
            comma-separated values.</t>
        </list>
      </t>
    </section>

    <section title="New Properties and Parameters">
      <t>
        <list style="symbols">
          <t>The KIND, GENDER, LANG, ANNIVERSARY, XML, and CLIENTPIDMAP properties
            have been added.</t>
          <t><xref target="RFC2739"/>, which defines the FBURL, CALADRURI,
              CAPURI, and CALURI properties, has been merged in.</t>
          <t><xref target="RFC4770"/>, which defines the IMPP property, has been
            merged in.</t>
          <t>The "work", "home", and "uri" TYPE parameter values for the EMAIL
            property have been added.</t>
          <t>The "pref" value of the TYPE parameter is now a parameter of its
            own, with a positive integer value indicating the level of
            preference.</t>
          <t>The ALTID and PID parameters have been added.</t>
        </list>
      </t>
    </section>

    <section title="Other Changes">
      <t>
        <list style="symbols">
          <t>Synchronization is addressed in <xref
              target="synchronization"/>.</t>
          <t>The N property is no longer mandatory.</t>
          <t>The value of TEL is now a URI.</t>
          <t>The AGENT property was replaced with a type of RELATED.</t>
          <t>Date and time values now only support the basic format. Truncation
            is now supported.</t>
        </list>
      </t>
    </section>
  </section>

  <section title="Change Log (to be removed by RFC Editor prior to publication)"
    anchor="changelog">
    <section title="Changes in -19">
      <t>
        <list style="symbols">
          <t>Fixed nits.</t>
          <t>Fixed MEDIATYPE ABNF.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -18">
      <t>
        <list style="symbols">
          <t>Fix missing text in KIND section.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -17">
      <t>
        <list style="symbols">
          <t>s/individual/entity/</t>
          <t>Moved section 3.4 for better flow.</t>
          <t>Removed text overriding general MIME and HTTP rules.</t>
          <t>Fixed redundant ABNF.</t>
          <t>Fixed parameter value quoting in examples.</t>
          <t>Added informative reference for Content-Language header.</t>
          <t>Moved cardinality table earlier for better flow.</t>
          <t>Added normative reference for XML 1.0.</t>
          <t>Added informative reference for mailto: scheme.</t>
          <t>Clarified where the VERSION property must go.</t>
          <t>Created the MEDIATYPE parameter.</t>
          <t>Fixed text/vcard encoding considerations.</t>
          <t>Added .vcard file extension.</t>
          <t>Removed need for extension documents to contain tables in their
            IANA Considerations section.</t>
          <t>Removed underspecified "Status" column in IANA registry.</t>
          <t>Moved obsoleted references to Informative section.</t>
          <t>Moved iCalendar references to Normative section.</t>
          <t>Expanded specification of KIND values.</t>
          <t>Recommend defining an XML representation for new vCard objects.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -16">
      <t>
        <list style="symbols">
          <t>RELATED: Added XFN values into IANA registry.</t>
          <t>RELATED: Added values "agent" and "emergency".</t>
          <t>EMAIL is now free-form text, with informative reference to EAI.</t>
          <t>GENDER now has two components: one for biological sex, the other
            for gender identity.</t>
          <t>Bugfixes to the core ABNF.</t>
          <t>Clarified IANA considerations.</t>
          <t>UID may be reset to free-form text.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -15">
      <t>
        <list style="symbols">
          <t>Reverted N to the 5-component format of vCard 3.</t>
          <t>Removed DDAY, BIRTH, and DEATH.</t>
          <t>First two components in ADR SHOULD be empty.</t>
          <t>Removed the LABEL property.</t>
          <t>Removed the binary value type and the ENCODING and FMTTYPE
            parameters.</t>
          <t>Renamed SEX to GENDER. Set predefined values to "male" and
            "female".</t>
          <t>Reverted TEL to take a text value by default, but SHOULD be reset
            to a URI.</t>
          <t>Refer to iCalendar for CALSCALE.</t>
          <t>Removed the "thing" value for KIND.</t>
          <t>RELATED now uses XFN 1.1 for its value.</t>
          <t>Dropped the VERSION parameter. XML MUST be version 1.0.</t>
          <t>Dropped the CLASS property.</t>
          <t>Property and parameter names SHOULD be upper-case.</t>
          <t>Use ABNF for cardinality notation.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -14">
      <t>
        <list style="symbols">
          <t>DQUOTE is US-ASCII decimal 34, not 22.</t>
          <t>Removed unused reference to RFC 2046.</t>
          <t>Updated reference to draft-ietf-vcarddav-vcardxml.</t>
          <t>Small fixes to the IANA registration text.</t>
          <t>Added notes on the usage of TEL and IMPP properties.</t>
          <t>Clarified "country name" component of ADR property.</t>
          <t>Removed usage of undefined type value "msg" in TEL example.</t>
          <t>Fixed parameter value quoting rules and ABNF.</t>
          <t>Added example to LANGUAGE property.</t>
          <t>Fixed synchronization example regarding the cardinality of FN.</t>
          <t>Added implementation note for float value type.</t>
          <t>Removed advice for always including VALUE parameter.</t>
          <t>FMTTYPE MUST include the full MIME type.</t>
          <t>Made ADR's ABNF more verbose.</t>
          <t>Organized TEL TYPE values in a table.</t>
          <t>Replaced TOP-SECRET example with NOINDEX.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -13">
      <t>
        <list style="symbols">
          <t>Changed global ABNF to make explicit that VERSION comes first.</t>
          <t>Reworked example for LANGUAGE property.</t>
          <t>s/TYPE/FMTTYPE/ in two examples.</t>
          <t>Allow LANGUAGE parameter for text-valued BDAY, DDAY, and
            RELATED.</t>
          <t>Tightened language on LANGUAGE parameter regarding cardinality.</t>
          <t>Removed the NAME property.</t>
          <t>Adjusted semi-colon escaping rules.</t>
          <t>Added the ALTID parameter.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -12">
      <t>
        <list style="symbols">
          <t>Fixed example of LANGUAGE cardinality.</t>
          <t>Added note about YYYY-MM date format.</t>
          <t>Fixed appendix A.</t>
          <t>VERSION property must come first.</t>
          <t>Fixed mistake in PID example.</t>
          <t>Removed two changes from Appendix A which were probably intended to
            go into this change log section.</t>
          <t>Explicitly state that the value for the BEGIN and END properties is
            case-insensitive.</t>
          <t>Removed the SORT-STRING property. Created the SORT-AS
            parameter.</t>
          <t>"T" and "Z" in dates and times are now mandatory uppercase.</t>
          <t>Added the "version" MIME parameter.</t>
          <t>More consistent capitalization.</t>
          <t>Added missing "ANNIVERSARY" in name production rule.</t>
          <t>Added missing calscale-param in param production rule.</t>
          <t>Moved definition of GEO and TZ parameters to section 5.</t>
          <t>Simplified discussion of encoding.</t>
          <t>Removed restriction for "work" and "home" values of TYPE parameter
            w.r.t. the KIND property.</t>
          <t>XML value may now be binary.</t>
          <t>Created VERSION parameter for XML.</t>
          <t>BIRTH and DEATH can now have URI values.</t>
          <t>Created the FMTTYPE parameter.</t>
          <t>KEY can now take a text value.</t>
          <t>Added references to RFC 5545 (iCalendar).</t>
          <t>Added namespace column in parameters registry.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -11">
      <t>
        <list style="symbols">
          <t>Change "XML chunk" to "XML fragment".</t>
          <t>Cite W3C document containing definition of "fragment".</t>
          <t>Added "XML" to property name ABNF.</t>
          <t>Clarified newline escaping rule.</t>
          <t>Replaced one remaining "type" with "property".</t>
          <t>Removed case insensitivity of parameter values.</t>
          <t>XML property can now only contain one element that is not in the
            vCard 4 namespace.</t>
          <t>Clarified interrelationship between LANGUAGE, cardinality, and
            PID.</t>
          <t>Added "textphone" TEL type.</t>
          <t>Fixed quoting of comma in ORG examples.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -10">
      <t>
        <list style="symbols">
          <t>Added component in SORT-STRING for sorting by given name. Fixed and
            expanded the examples.</t>
          <t>Fixed KIND-value ABNF.</t>
          <t>Fixed deprecated media type.</t>
          <t>Created the CALSCALE parameter.</t>
          <t>Strenghtened the stance on character set.</t>
          <t>Defined the Language-Tag ABNF.</t>
          <t>Made explicit the fact that IANA does not register templates.</t>
          <t>Created the XML property.</t>
          <t>Added social networking examples to URL property.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -09">
      <t>
        <list style="symbols">
          <t>Removed special meaning for groups. Removed the "work" and "home"
            groups. Removed the group registry. Re-introduced the "work" and
            "home" TYPE parameter values. Applied the TYPE parameter to
            properties which supported the "work" and "home" groups.</t>
          <t>Vendor namespace now uses private enterprise number in prefix.</t>
          <t>Added "thing" value for KIND property.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -08">
      <t>
        <list style="symbols">
          <t>Allow 1985 (year only) in date ABNF.</t>
          <t>Fixed missing country in ADR example.</t>
          <t>Added the DATE-AND-OR-TIME value.</t>
          <t>Made BDAY and DDAY use DATE-AND-OR-TIME.</t>
          <t>Prefixed "param" and "value" production rules specific to
            properties with the property name.</t>
          <t>Replaced the GENDER property with the SEX property.</t>
          <t>Added the ANNIVERSARY property.</t>
          <t>Added the "friend" and "spouse" types of RELATED.</t>
          <t>TZ property now has text / uri value.</t>
          <t>Refined the definitions of TITLE and ROLE.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -07">
      <t>
        <list style="symbols">
          <t>PREF is now bounded. 100 is the maximum value.</t>
          <t>Added the "emergency" RELATED type.</t>
          <t>Made GEO a URI.</t>
          <t>Added GEO and TZ parameters to ADR.</t>
          <t>Changed wording of "default" use of SOUND property.</t>
          <t>Completely reworked the date, time, and date-time grammars.</t>
          <t>Added the timestamp value type.</t>
          <t>REV now has the timestamp value type.</t>
          <t>Rewrote ABNF.</t>
          <t>ORG can now have a single level.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -06">
      <t>
        <list style="symbols">
          <t>Corrected omission of resetability to text value for RELATED.</t>
          <t>Let KEY value type be reset to a URI value.</t>
          <t>ABNF fixes.</t>
          <t>Made gender values extensible.</t>
          <t>Gave the PREF parameter a positive integer value.</t>
          <t>Removed usage of the undefined "word" ABNF production rule.</t>
          <t>Defined property cardinalities.</t>
          <t>Defined properties allowable in WORK and HOME groups.</t>
          <t>Simplified the LANG property to use the vCard preference
            mechanism.</t>
          <t>Created the "language-tag" value type.</t>
          <t>Added PID to ABNF of SOURCE allowed parameters.</t>
          <t>Clarified escaping rules.</t>
          <t>Changed ABNF definition of non-standard X- properties.</t>
          <t>Removed TYPE parameter from EMAIL properties in examples.</t>
          <t>Created the CLIENTPIDMAP property.</t>
          <t>Changed PID value to a pair of small integers.</t>
          <t>Completely reworked synchronization mechanisms.</t>
          <t>Created brand new synchronization example.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -05">
      <t>
        <list style="symbols">
          <t>Added multi PID value proposal.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -04">
      <t>
        <list style="symbols">
          <t>Added "location" value for KIND property.</t>
          <t>Some fixes to ABNF.</t>
          <t>Moved "pref" from being a TYPE value to a parameter in its own
            right.</t>
          <t>Removed the "work" and "home" TYPE values.</t>
          <t>Reintroduced the group construct.</t>
          <t>Assigned meaning to WORK and HOME groups.</t>
          <t>Restricted the TEL TYPE parameter value set.</t>
          <t>In N property, removed additional names, and replaced with multiple
            given names.</t>
          <t>Removed TYPE parameter from EMAIL and IMPP properties.</t>
          <t>Replaced AGENT with a type of RELATED.</t>
          <t>Use example.org domain in URL example.</t>
          <t>Created initial IANA table of values.</t>
          <t>Defined meaning of PUBLIC, PRIVATE, CONFIDENTIAL.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -03">
      <t>
        <list style="symbols">
          <t>Various changes to the synchronization mechanisms.</t>
          <t>Allowed truncated format for dated. See issue #236.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -02">
      <t>
        <list style="symbols">
          <t>Removed useless text in IMPP description.</t>
          <t>Added CalDAV-SCHED example to CALADRURI.</t>
          <t>Removed CAPURI property.</t>
          <t>Dashes in dates and colons in times are now mandatory.</t>
          <t>Allow for dates such as 2008 and 2008-05 and times such as 07 and
              07:54.</t>
          <t>Removed inline vCard value.</t>
          <t>Made AGENT only accept URI references instead of inline vCards.</t>
          <t>Added the MEMBER property.</t>
          <t>Renamed the UID parameter to PID.</t>
          <t>Changed the value type of the PID parameter to "a small
              integer."</t>
          <t>Changed the presence of UID and PID when synchronization is to be
              used from MUST to SHOULD.</t>
          <t>Added the RELATED (<xref target="RELATED"/>) property.</t>
          <t>Fixed many ABNF typos (issue #252).</t>
          <t>Changed formatting of ABNF comments to make them easier to read
              (issue #226).</t>
        </list>
      </t>
    </section>
    <section title="Changes in -01">
      <t>
        <list style="symbols">
          <t>Merged <xref target="RFC2739"/> in.</t>
          <t>Converted all foobar.com, abc.com, etc. to example.com.</t>
          <t>Fixed bugs in ABNF.</t>
          <t>Made explicit that coordinates in the GEO property are expressed in
            the WGS 84 reference system.</t>
          <t>Clarified folding issues with multi-byte characters.</t>
          <t>Made the value of TEL a URI.</t>
          <t>Added the UID parameter.</t>
          <t>Made the UID property's value type a URI.</t>
          <t>Added <xref target="synchronization"/>.</t>
          <t>Created IANA process for registering new parameters, value types,
            and properties.</t>
          <t>Created the initial IANA registries.</t>
          <t>Created vendor namespace based on text from RFC 4288.</t>
        </list>
      </t>
    </section>
    <section title="Changes in -00">
      <t>
        <list style="symbols">
          <t>Name change because draft has been accepted as WG item. Otherwise,
            same as draft-resnick-vcarddav-vcardrev-01.</t>
          <t>Removed reference to RFC 2234.</t>
          <t>Fixed errata from
            http://www.rfc-editor.org/errata_search.php?rfc=2426.</t>
          <t>Removed passage referring to RFC 2425 profiles.</t>
          <t>Renamed <xref target="oldsection_3_3"/> from "Telecommunications
            Adressing Properties" to "Communications Properties.</t>
          <t>Added <xref target="diff"/> and <xref target="changelog"/>.</t>
          <t>Added reference to <xref target="RFC4770"/>.</t>
          <t>Removed the group construct.</t>
          <t>Made the N property no longer mandatory.</t>
          <t>Added the KIND property.</t>
          <t>Clarified meaning of TYPE parameter value for PHOTO, LOGO, KEY, and
            SOUND.</t>
          <t>Removed the CONTEXT parameter.</t>
          <t>Removed the MAILER property.</t>
          <t>Made reference to <xref target="ISO9070"/> informative.</t>
          <t>Removed "intl", "dom", "postal", and "parcel" TYPE parameter values
            for the ADR and LABEL properties.</t>
          <t>Clarified meaning of "extended address" ADR field.</t>
          <t>Mentioned <xref target="RFC3406"/> as another method of generating
            PRODID values.</t>
          <t>Updated obsolete references.</t>
          <t>Allowed BDAY and DDAY value types to be text values for fuzzy
            dates.</t>
          <t>Removed the CHARSET property. Now the encoding is always UTF-8,
            except when overridden by the Content-Type (which is considered a
            compatibility feature).</t>
        </list>
      </t>
    </section>
  </section>
</back>

</rfc>

PAFTECH AB 2003-20262026-04-23 23:29:32