<?xml version="1.0"encoding="utf-8"?>encoding="UTF-8"?> <!DOCTYPErfc>rfc [ <!ENTITY nbsp " "> <!ENTITY zwsp "​"> <!ENTITY nbhy "‑"> <!ENTITY wj "⁠"> ]> <rfc xmlns:xi="http://www.w3.org/2001/XInclude" ipr="pre5378Trust200902" submissionType="IETF" category="std"xml:lang="en"consensus="true"docName="draft-ietf-calext-vcard-jscontact-extensions-10"xml:lang="en" docName="draft-ietf-calext-vcard-jscontact-extensions-11" number="9554" obsoletes="" updates="6350" tocInclude="true" symRefs="true" sortRefs="true" version="3"> <front> <title abbrev="vCard JSContact Extensions">vCard FormatExtensionExtensions for JSContact</title> <seriesInfoname="Internet-Draft" value="draft-ietf-calext-vcard-jscontact-extensions-10"/>name="RFC" value="9554"/> <author initials="R." surname="Stepanek" fullname="Robert Stepanek"> <organization>Fastmail</organization> <address> <postal><street>PO<extaddr>PO Box234, Collins St234</extaddr> <street>Collins St. West</street> <city>Melbourne</city><code>VIC 8007</code><region>VIC</region> <code>8007</code> <country>Australia</country><region> </region></postal> <email>rsto@fastmailteam.com</email> </address> </author> <author initials="M." surname="Loffredo" fullname="Mario Loffredo"> <organization>IIT-CNR</organization> <address> <postal> <street>ViaMoruzzi,1</street>Moruzzi, 1</street> <city>Pisa</city> <code>56124</code> <country>Italy</country><region> </region><region></region> </postal> <email>mario.loffredo@iit.cnr.it</email> </address> </author> <dateyear="2023" month="August" day="31"/> <area>Applications</area> <workgroup>Calendaring Extensions</workgroup>year="2024" month="May"/> <area>art</area> <workgroup>calext</workgroup> <keyword>addressbook</keyword> <keyword>contacts</keyword> <keyword>cards</keyword> <keyword>vCard</keyword> <keyword>JSContact</keyword> <abstract> <t> This document defines a set of new properties for vCard and extends the use of existing ones. Their primary purpose is to align the same set of features between the JSContact and vCard formats, but the new definitions also aim to be useful within just the vCard format. This document updates RFC 6350(vCard).("vCard Format Specification"). </t> </abstract> </front> <middle> <section> <name>Introduction</name> <t> The JSContact <xreftarget="I-D.ietf-calext-jscontact"/>target="RFC9553"/> format aims to be an alternative to the vCard <xref target="RFC6350"/> format for representation of contact and address book data. As such, it introduces new semantics that are not covered in the current definition of vCard and its various extensions. Converting contact data between the two formats is defined in <xreftarget="I-D.ietf-calext-jscontact-vcard"/>target="RFC9555"/> with the goal of not losing any semantics during conversion. Todo so,achieve this, this document defines a new set of properties for vCard and extends existing definitions. </t> <section anchor="notational-conventions" numbered="true" toc="default"> <name>Notational Conventions</name> <t>The key words "<bcp14>MUST</bcp14>", "<bcp14>MUST NOT</bcp14>", "<bcp14>REQUIRED</bcp14>", "<bcp14>SHALL</bcp14>", "<bcp14>SHALL NOT</bcp14>", "<bcp14>SHOULD</bcp14>", "<bcp14>SHOULD NOT</bcp14>", "<bcp14>RECOMMENDED</bcp14>", "<bcp14>NOT RECOMMENDED</bcp14>", "<bcp14>MAY</bcp14>", and "<bcp14>OPTIONAL</bcp14>" in this document are to be interpreted as described inBCP 14BCP 14 <xref target="RFC2119" format="default" sectionFormat="of" derivedContent="RFC2119"/> <xref target="RFC8174" format="default" sectionFormat="of" derivedContent="RFC8174"/> when, and only when, they appear in all capitals, as shown here.</t> </section> <section anchor="abnf-notations"> <name>ABNF Notations</name> <t>The ABNF definitions in this document use the notations of <xref target="RFC5234"/>. ABNF rules not defined in this documenteitherare defined in either <xref target="RFC5234"/> (such as the ABNF for CRLF, WSP, DQUOTE, VCHAR, ALPHA, and DIGIT) or <xref target="RFC6350"/>. </t> </section> </section> <section> <name>Updated Properties</name> <section anchor="prop-adr"> <name>ADR</name> <t>This specification modifies the definition of the"ADR"ADR property. It extends its structured value with additional address components to better support the variety of international addresses. It separates the addressparts thatparts, which currentlytypicallyare typically combined in street address componentvaluesvalues, into distinct components.</t> <t>Implementations <bcp14>SHOULD</bcp14> write a combined value of these components in the street address component for backwards compatibility, but they <bcp14>SHOULD</bcp14> ignore the street component duringreadreads if the ADR property value contains any of the new components.</t> <t>The following change is made to the first paragraphin theunder "SpecialNotes" section,note", as originally specified in <xref target="RFC6350" sectionFormat="of" section="6.3.1"/>.AllThe remaining paragraphs of that section in the original specification still apply.</t><dl> <dt>Special notes:</dt> <dd>The<t> Special note: The structured type value consists of a sequence of address components. The component valuesMUST<bcp14>MUST</bcp14> be specified in their corresponding position. The structured type value corresponds, in sequence,to<br/> theto the</t> <ul spacing="compact" empty="true"> <li> post officebox;<br/> thebox;</li> <li> extended address (e.g., apartment or suitenumber);<br/> thenumber);</li> <li> streetaddress;<br/> theaddress;</li> <li> locality (e.g.,city);<br/> thecity);</li> <li> region (e.g., state orprovince);<br/> theprovince);</li> <li> postalcode;<br/> thecode;</li> <li> country name (full name in the language specified in <xref target="RFC6350"section="5.1"/>);<br/> the room orsectionFormat="of" section="5.1"/>);</li> <li> room, suitenumbernumber, oridentifier<br/> theidentifier;</li> <li> apartment number, extensiondesignationdesignation, or boxnumber.<br/> thenumber;</li> <li> building floor orlevel;<br/> thelevel;</li> <li> streetnumber;<br/> thenumber;</li> <li> streetname;<br/> thename;</li> <li> building, tower,condominium;<br/> theor condominium;</li> <li> block name ornumber;<br/> the subdistrict;<br/> the district;<br/> thenumber;</li> <li> subdistrict;</li> <li> district;</li> <li> landmark or another publicly known prominent feature that can substitute the street name andnumber, e.g.,number (e.g., "WhiteHouse"",House" and "TajMahal"";<br/>Mahal"); and </li> <li> the cardinal direction orquadrant, e.g., "North"<br/> </dd> </dl>quadrant (e.g., "north").</li> </ul> <t>The following change is made to the definition of "ADR-value"in the "ABNF" section,under "ABNF", as originally specified in <xref target="RFC6350" sectionFormat="of" section="6.3.1"/>.</t><dl> <dt>ABNF</dt> <dd><t>ABNF</t> <sourcecodename=""type="abnf"><![CDATA[ ADR-value = ; defined in RFC 6350, Section 6.3.1.: ADR-component-pobox ";" ADR-component-ext ";" ADR-component-street ";" ADR-component-locality ";" ADR-component-region ";" ADR-component-code ";" ADR-component-country ";" ;above components aredefined inRFC 6350, section 6.3.1this document: ADR-component-room ";" ADR-component-apartment ";" ADR-component-floor ";" ADR-component-streetnumber ";" ADR-component-streetname ";" ADR-component-building ";" ADR-component-block ";" ADR-component-subdistrict ";" ADR-component-district ";" ADR-component-landmark ";" ADR-component-direction 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 ADR-component-room = list-component ADR-component-apartment = list-component ADR-component-floor = list-component ADR-component-streetnumber = list-component ADR-component-streetname = list-component ADR-component-building = list-component ADR-component-block = list-component ADR-component-subdistrict = list-component ADR-component-district = list-component ADR-component-landmark = list-component ADR-component-direction = list-component ]]></sourcecode></dd> </dl><t>The following change is madeto the "Example" section,under "Example", as originally specified in <xref target="RFC6350"section="6.2.2"/>.</t> <dl> <dt>Example:sectionFormat="of" section="6.3.1"/>.</t> <t>Example: In this example, the post office box and the extended address components are absent. The street number and name areaddedboth added as separatecomponents, as well ascomponents and are combined in the street component forbackwards-compatibility.</dt> <dd>backwards compatibility.</t> <sourcecodename="" type="abnf"><![CDATA[name=""><![CDATA[ ADR;GEO="geo:12.3457,78.910": ;;123 Main Street;AnyTown;CA;91921-1234;U.S.A.;;123;Main Street;;;;;;;Town;CA;91921-1234;U.S.A ;;;;123;Main Street;;;;;; ]]></sourcecode></dd> </dl></section> <section anchor="prop-n"> <name>N</name> <t>This specification modifies the definition of the"N"N property. It extends its structured value with additional name components to better support international names and generation markers.DoingIn doing so, this also facilitates formatting N property values using the<xref target="CLDRPersonName">Unicode CLDRUnicode Common Locale Data Repository (CLDR) PersonName</xref>Name <xref target="CLDRPersonName"/> formatting standard.</t> <t>One new component is for secondary surnames,asbecause in some cultures, such secondary surname kinds are used to indicate the paternal and maternal family names or generational names indicatingfather,father or grandfather. Another new component indicates a generation ("II", "XVI") or parental relation ("Jr.", "Sr.").</t> <t>Currently, implementations typically place secondary surnames in the family namecomponents,component and generational markers in the honorific suffixes component. For backwards compatibility, implementations <bcp14>SHOULD</bcp14> add such values to both the newly defined components and their backwards-compatible counterpart. Reading N property values, implementations <bcp14>SHOULD</bcp14> ignore any value in thebackward-compatiblebackwards-compatible component if an equal value is set in theaccordingnewcomponent.component accordingly. For example, a "Jr." that occurs in both honorific suffixes and generation should only be handled as a generational marker.</t> <t>The following change is made to the first paragraphin theunder "SpecialNotes" section,note", as originally specified in <xref target="RFC6350" sectionFormat="of" section="6.2.2"/>.AllThe remainingtext of this and the followingparagraphs of that section in the original specification still apply.</t><dl> <dt>Special notes:</dt> <dd><t>Special note: The structured property value corresponds, in sequence, tothe<br/> familythe</t> <ul spacing="compact" empty="true"> <li>family names (also known assurnames),<br/> given names,<br/> additional names,<br/> honorific prefixes,<br/> honorific suffixes,<br/> secondary surname,<br/> and generation.<br/> </dd> </dl>surnames);</li> <li>given names;</li> <li>additional names;</li> <li>honorific prefixes;</li> <li>honorific suffixes;</li> <li>secondary surname; and</li> <li>generation.</li> </ul> <t>The following change is madeto the "ABNF" section,under "ABNF", as originally specified in <xref target="RFC6350" sectionFormat="of" section="6.2.2"/>.</t><dl> <dt>ABNF</dt> <dd><t>ABNF</t> <sourcecode name="" type="abnf"><![CDATA[ N-param = "VALUE=text" / sort-as-param / language-param / altid-param / any-param N-value = list-component 6(";" list-component) ]]></sourcecode></dd> </dl><t>The following change is madeto the "Example" section,under "Examples", as originally specified in <xref target="RFC6350" section="6.2.2"/>.</t><dl> <dt>Example</dt> <dd><t>Examples</t> <sourcecodename="" type="abnf"><![CDATA[name=""><![CDATA[ N:Public;John;Quinlan;Mr.;Esq. N:Stevenson;John;Philip,Paul;Dr.;Jr.,M.D.,A.C.P.;;Jr. ]]></sourcecode></dd> </dl><t>No change is required for the definition of the SORT-AS parameter, but the new components also apply for use with this parameter.</t> </section> </section> <section anchor="new-properties"> <name>New Properties</name> <section anchor="prop-created"> <name>CREATED</name> <dl> <dt>Property name:</dt> <dd>CREATED</dd> <dt>Purpose:</dt><dd>This property defines<dd>Defines the date and time when the vCard wascreated</dd>created.</dd> <dt>Value type:</dt> <dd>A single timestamp value.</dd> <dt>Cardinality:</dt> <dd>*1</dd> <dt>Property parameters:</dt> <dd>VALUE</dd> <dt>Description:</dt> <dd> This is thetime stamptimestamp when the vCard was created. Copying the vCard across systems does not count as a newcreation,creation nordoesa new revision. Instead, thetime stamptimestamp value typically stays unchanged for the existence of the vCard. </dd> <dt>Format definition:</dt> <dd><t>This property is defined by the following notation:</t><sourcecode name="" type="abnf"><![CDATA[ created = "CREATED" createdparam ":" timestamp createdparam = *( ; ; The following areOPTIONAL,OPTIONAL ; but MUST NOT occur more than once. ; (";" "VALUE" "=" "timestamp") / ; ; The following areOPTIONAL,OPTIONAL ; and MAY occur more than once. ; (";" any-param) ; ) ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ CREATED:20220705T093412Z CREATED;VALUE=TIMESTAMP:20211022T140000-05 ]]></sourcecode> </dd> </dl> </section> <section anchor="prop-gramgender"> <name>GRAMGENDER</name> <dl> <dt>Property name:</dt> <dd>GRAMGENDER</dd> <dt>Purpose:</dt><dd> This property defines<dd>Defines which grammatical gender to use in salutations and other grammatical constructs. </dd> <dt>Value type:</dt> <dd>A single textvalue,value that is restricted to an enumerated list of allowed values.</dd> <dt>Cardinality:</dt> <dd>*</dd> <dt>Property parameters:</dt><dd>LANG</dd><dd>LANGUAGE</dd> <dt>Description:</dt> <dd> <t> This property defines the grammatical gender that the contact prefers to be addressed by or referredatto as in written or spoken form. For example, the German language distinguishes by grammatical gender in salutations such as "Sehr geehrte" (feminine) and "Sehr geehrter" (masculine). Multiple occurrences of this property <bcp14>MUST</bcp14> be distinguished by theLANGLANGUAGE parameter. </t> </dd> <dt>Format definition:</dt> <dd><t>This property is defined by the following notation:</t><sourcecode name="" type="abnf"><![CDATA[ gramgender = "GRAMGENDER" gramgender-param ":" gramgender-value gramgender-param = *( ; ; The following areOPTIONAL,OPTIONAL ; but MUST NOT occur more than once. ; (";" language-param) / ; ; The following areOPTIONAL,OPTIONAL ; and MAY occur more than once. ; (";" any-param) ; ) gramgender-value = "animate" / "common" / "feminine" / "inanimate" / "masculine" / "neuter" / iana-token / x-name ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[GRAMGENDER:neuterGRAMGENDER;LANGUAGE=de:feminine ]]></sourcecode> </dd> </dl> </section> <section anchor="prop-language"> <name>LANGUAGE</name> <dl> <dt>Property name:</dt> <dd>LANGUAGE</dd> <dt>Purpose:</dt><dd>This property defines<dd>Defines the default language that human-readable text values in this vCardshould beare assumed to be written in.</dd> <dt>Value type:</dt> <dd>A single Language-Tag value as defined in <xref target="RFC6350" sectionFormat="of" section="4"/>.</dd> <dt>Cardinality:</dt> <dd>*1</dd> <dt>Property parameters:</dt> <dd>The LANGUAGE parameter <bcp14>MUST NOT</bcp14> be assigned to this property.</dd> <dt>Description:</dt> <dd> This property defines the languagein whichthat property values of type<tt>TEXT</tt> shall beTEXT are assumed to be written in for this vCard. If a vCard property includes the<tt>LANGUAGE</tt>LANGUAGE parameter, then the parameter value has higher precedence than the<tt>LANGUAGE</tt>LANGUAGE property value. </dd> <dt>Format definition:</dt> <dd><t>This property is defined by the following notation:</t><sourcecode name="" type="abnf"><![CDATA[ language-prop = "LANGUAGE" any-param ":" Language-Tag ; Language-Tag is defined inRFC6350,RFC 6350, Section 4. ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ LANGUAGE:de-AT ]]></sourcecode> </dd> </dl> </section> <section anchor="prop-pronouns"> <name>PRONOUNS</name> <dl> <dt>Property name:</dt> <dd>PRONOUNS</dd> <dt>Purpose:</dt> <dd>This property definesDefines the pronouns that shall be used to refer to the entity represented by this vCard. </dd> <dt>Value type:</dt> <dd>A single text value.</dd> <dt>Cardinality:</dt> <dd>*</dd> <dt>Property parameters:</dt><dd>LANG,<dd>LANGUAGE, PREF,TYPE</dd>TYPE, ALTID</dd> <dt>Description:</dt> <dd> This property contains the pronouns that the contact chooses to use for themselves. The value is free-form text. These pronouns shall be used when addressing or referring to the contact. Multiple occurrences of this property <bcp14>MAY</bcp14> define pronouns for multiple languages,preferencespreferences, and contexts. Multiple pronouns in the same language <bcp14>SHOULD</bcp14> use the PREFparameter,parameter; otherwise, the order of preference is implementation-specific. </dd> <dt>Format definition:</dt> <dd><t>This property is defined by the following notation:</t><sourcecode name="" type="abnf"><![CDATA[ pronouns = "PRONOUNS" pronouns-param ":" text pronouns-param = *( ; ; The following areOPTIONAL,OPTIONAL ; but MUST NOT occur more than once. ; (";" language-param) / (";" pref-param) / (";" type-param) / (";" altid-param) / ; ; The following areOPTIONAL,OPTIONAL ; and MAY occur more than once. ; (";" any-param) ; ) ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[PRONOUNS;LANG=en;PREF=1:xe/xir PRONOUNS;LANG=en;PREF=2:they/themPRONOUNS;LANGUAGE=en;PREF=1:xe/xir PRONOUNS;LANGUAGE=en;PREF=2:they/them ]]></sourcecode> </dd> </dl> </section> <section anchor="prop-socialprofile"> <name>SOCIALPROFILE</name> <dl> <dt>Property name:</dt> <dd>SOCIALPROFILE</dd> <dt>Purpose:</dt><dd>To specify<dd>Specifies the URI or username for social media profiles associated with the object the vCard represents.</dd> <dt>Value type:</dt> <dd>A single URI or TEXT value. The default value type is URI.</dd> <dt>Cardinality:</dt> <dd>*</dd> <dt>Property parameters:</dt> <dd>The SERVICE-TYPE parameter <bcp14>MUST</bcp14> be assigned to this property if the value type is TEXT, and it <bcp14>MAY</bcp14> be assigned if the value type is URI. In either case, it <bcp14>MUST NOT</bcp14> be assigned more than once.</dd> <dt>Description:</dt> <dd> Several vCard address book implementations currently use an experimental X-SOCIALPROFILE property to store social media profiles for contacts. This specification provides an IANA-registered property for the same purpose. In addition to the typical use of this property with URI values, it also allows setting usernames for social media services as free-text TEXT values, in which case the service name <bcp14>MUST</bcp14> be provided as a parameter. Names <bcp14>MUST</bcp14> be considered equal if they match case-insensitively. </dd> <dt>Format definition:</dt> <dd><t>This property is defined by the following notation:</t><sourcecode name="" type="abnf"><![CDATA[ socialpr = "SOCIALPROFILE" socialpr-param ":" socialpr-value socialpr-param = "VALUE=uri" / "VALUE=text" / service-type-param / any-param socialpr-value = URI / text ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ SOCIALPROFILE;SERVICE-TYPE=Mastodon:https://example.com/@foo SOCIALPROFILE:https://example.com/ietf SOCIALPROFILE;SERVICE-TYPE=SomeSite;VALUE=text:peter94 ]]></sourcecode> </dd> </dl> </section> </section> <section anchor="new-parameters"> <name>New Parameters</name> <section anchor="param-author"> <name>AUTHOR</name> <dl> <dt>Parameter name:</dt> <dd>AUTHOR</dd> <dt>Purpose:</dt><dd>This parameter identifies<dd>Identifies the author of the associated property value.</dd> <dt>Description:</dt> <dd> <t>This parameter <bcp14>MAY</bcp14> be set on any property where conveying authorship is desired. It identifies the author as a URI <xref target="RFC3986"/>. Since every valid URI includes the COLON (U+003A) character, the parameter value <bcp14>MUST</bcp14> be quoted.Note that asAs an alternative or in addition to this parameter, the<tt>AUTHOR-NAME</tt>AUTHOR-NAME parameter allows naming an author as a free-text value (see <xref target="param-author-name"/>).</t> </dd> <dt>Format definition:</dt> <dd> <sourcecode name="" type="abnf"><![CDATA[ author-param = "AUTHOR" "=" DQUOTE URI DQUOTE ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ NOTE;AUTHOR="mailto:john@example.com":This is some note. ]]></sourcecode> </dd> </dl> </section> <section anchor="param-author-name"> <name>AUTHOR-NAME</name> <dl> <dt>Parameter name:</dt> <dd>AUTHOR-NAME</dd> <dt>Purpose:</dt><dd>This parameter names<dd>Names the author of the associated property value.</dd> <dt>Description:</dt> <dd> <t>This parameter <bcp14>MAY</bcp14> be set on any property where conveying authorship is desired. It names the author as a free-text value. The parameter value <bcp14>MUST NOT</bcp14> be empty. Implementations <bcp14>MUST</bcp14> take care to quote the namepart,part; ifotherwiseotherwise, the partwouldwill not be a valid<tt>param-value</tt>"param-value" (see <xref target="RFC6350" sectionFormat="of" section="3.3"/>).Note that asAs an alternative or in addition to this parameter, the<tt>AUTHOR</tt>AUTHOR parameter allows identifying an author by URI (see <xref target="param-author"/>).</t> </dd> <dt>Format definition:</dt> <dd> <sourcecode name="" type="abnf"><![CDATA[ author-name-param = "AUTHOR-NAME" "=" param-value ; not empty ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ NOTE;AUTHOR-NAME=John Doe:This is some note. NOTE;AUTHOR-NAME="_:l33tHckr:_":A note by an unusual author name. ]]></sourcecode> </dd> </dl> </section> <section anchor="param-created"> <name>CREATED</name> <dl> <dt>Parameter name:</dt> <dd>CREATED</dd> <dt>Purpose:</dt><dd>This parameter defines<dd>Defines the date and time when a property was created in a vCard.</dd> <dt>Description:</dt> <dd> <t>This parameter <bcp14>MAY</bcp14> be set on any property to define the point in time when the property was created. The value <bcp14>MUST</bcp14> be a valid TIMESTAMP value as defined in <xref target="RFC6350" sectionFormat="of" section="4.3.5"/>. Generally, updating a property value <bcp14>SHOULD NOT</bcp14> change the creation timestamp.</t> </dd> <dt>Format definition:</dt> <dd> <sourcecode name="" type="abnf"><![CDATA[ created-param = "CREATED" "=" param-value ;;a valid TIMESTAMP of Section 4.3.5 of[RFC6350]RFC 6350 ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ NOTE;CREATED=20221122T151823Z:This is some note. ]]></sourcecode> </dd> </dl> </section> <section anchor="param-derived"> <name>DERIVED</name> <dl> <dt>Parameter name:</dt> <dd>DERIVED</dd> <dt>Purpose:</dt><dd>This parameter specifies<dd>Specifies that the value of the associated property is derived from some other property values in the same vCard.</dd> <dt>Description:</dt> <dd> <t>This property parameter <bcp14>SHOULD</bcp14> be specified onana property if the property value is derived from some other properties in the same vCard. When present with a value of<tt>true</tt>,"true", clients <bcp14>MUST NOT</bcp14> update the property.</t><t>For<t>As an example, an implementation may derive the value of the FN property from the name components of the N property. It indicates this fact by setting the DERIVED parameter on the FN property to<tt>true</tt>.</t>"true".</t> </dd> <dt>Format definition:</dt> <dd> <sourcecode name="" type="abnf"><![CDATA[ derived-param = "DERIVED" "=" ("true" / "false") ; Default is false ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ N:;John;Quinlan;Mr.; FN;DERIVED=TRUE:Mr. John Quinlan ]]></sourcecode> </dd> </dl> </section> <section anchor="param-label"> <name>LABEL</name> <dl> <dt>Parameter name:</dt> <dd>LABEL</dd> <dt>Purpose:</dt><dd>This parameter is used<dd>Used with the ADR property. Its value contains a formatted text representation of that address,e.g.e.g., for delivery.</dd> <dt>Description:</dt> <dd> <t><xref target="RFC6350" sectionFormat="of" section="6.3.1"/> defines the ADR property, noting that the property can also include a LABEL parameter to present a delivery address label for the address. But this parameter was not included in the IANAParameters Registry <xref"vCard Parameters" registry (<xref target="RFC6350"section="10.3.2"/> and accordinglysectionFormat="of" section="10.3.2"/>) and, accordingly, is not a registered standard vCard element. This specification defines and registers the LABEL parameter for use with the ADR property as originally intended.</t> </dd> <dt>Format definition:</dt> <dd> <sourcecode name="" type="abnf"><![CDATA[ label-param = "LABEL" "=" param-value ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <t>The LABEL parameter as illustrated in the ADR property example in <xref target="RFC6350" sectionFormat="of" section="6.3.1"/>.</t> <sourcecode name=""><![CDATA[ ADR;LABEL="Mr. John Q. Public, Esq.\nMail Drop: TNE QB\n123 Main Street\nAny Town, CA 91921-1234\nU.S.A.": ;;123 Main Street;Any Town;CA;91921-1234;U.S.A. ]]></sourcecode> </dd> </dl> </section> <section anchor="param-phonetic"> <name>PHONETIC</name> <dl> <dt>Parameter name:</dt> <dd>PHONETIC</dd> <dt>Purpose:</dt><dd>This parameter defines<dd>Defines how to pronounce the value of another property in the same vCard.</dd> <dt>Description:</dt> <dd> <t>This property parameter indicates that the value of its property contains the phonetic representation ofaanother same-namedotherproperty in the same vCard. Exemplary uses areto definedefining how to pronounceaJapanesename, or for romanization ofnames and romanizing Mandarin or Cantonesenamenames and address components.</t> <t>The parameter value indicates the phonetic system and <bcp14>MUST</bcp14> be one of the values enumerated in the IANA <xreftarget="iana-vcard-param-values">vCardtarget="iana-vcard-param-values">"vCard ParameterValues</xref> registry.Values" registry</xref>. This specification defines the following values:</t><ul> <li><tt>ipa</tt>:<dl> <dt>"ipa":</dt><dd> denotes the <xref target="IPA">International PhoneticAlphabet</xref>.</li> <li><tt>piny</tt>:Alphabet</xref>.</dd> <dt>"jyut":</dt><dd> denotes theStandard MandarinCantonese romanization system"Hanyu Pinyin".</li> <li><tt>jyut</tt>:"Jyutping".</dd> <dt>"piny":</dt><dd> denotes theCantoneseStandard Mandarin romanization system"Jyutping".</li> <li><tt>script</tt>:"Hanyu Pinyin".</dd> <dt>"script":</dt><dd> denotes the unknown phonetic system. The <xref target="param-script">SCRIPT</xref> parameter <bcp14>MUST</bcp14> be set in addition to the PHONETICparameter.</li> </ul>parameter.</dd> </dl> <t>The value type of the property on which the PHONETIC parameter is set <bcp14>MUST</bcp14> be of the same type as its related property. If a component value is set in the property on which the PHONETIC parameter is set, then a component value also <bcp14>MUST</bcp14> be set at that same position in the related property. On the other hand, not every component value in the related property needs to have a phonetic representation.</t> <t>The ALTIDparameter(<xref target="RFC6350" sectionFormat="of" section="5.4"/>) parameter <bcp14>MUST</bcp14> be set with equal values on both the related property and the property having the PHONETIC parameter set. If more than one same-named property has both the PHONETIC parameter set and an equal ALTID parameter value, then atmostmost, one of these properties <bcp14>MAY</bcp14> not have the LANGUAGE parametersetset, and all others <bcp14>MUST</bcp14> have the LANGUAGE parameter set. The LANGUAGE parameters <bcp14>MUST NOT</bcp14> have equal values. The LANGUAGE parameter value <bcp14>SHOULD NOT</bcp14> contain a script subtag in its Language-Tagvaluevalue, and any such subtag <bcp14>MUST</bcp14> be ignored in favor of the <xref target="param-script">SCRIPT</xref> parameter value.</t> <t>This specification defines the PHONETIC parameter for use with the ADR and N properties.</t> </dd> <dt>Format definition:</dt> <dd> <sourcecode name="" type="abnf"><![CDATA[ phonetic-param = "PHONETIC=" phonetic-value phonetic-value = "ipa" / "piny" / "jyut" / "script" / iana-token / x-name ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ N;ALTID=1;LANGUAGE=zh-Hant:孫;中山;文,逸仙;;;; N;ALTID=1;PHONETIC=jyut; SCRIPT=Latn;LANGUAGE=yue:syun1;zung1saan1;man4,jat6sin1;;;; ]]></sourcecode> </dd> </dl> </section> <section anchor="param-propid"> <name>PROP-ID</name> <dl> <dt>Parameter name:</dt> <dd>PROP-ID</dd> <dt>Purpose:</dt><dd>This parameter identifies<dd>Identifies a property among all its siblings of the same property name.</dd> <dt>Description:</dt> <dd> <t> This parameter uniquely identifies a property among all of its siblings with the same name within a vCard. A valid PROP-ID value must be of 1 and a maximum of 255 octets in size, and itMUST<bcp14>MUST</bcp14> only contain the ASCII alphanumeric characters(<tt>A-Za-z0-9</tt>),("A-Za-z0-9"), hyphen(<tt>-</tt>),(-), and underscore(<tt>_</tt>).("_"). Theidentifieridentifier's onlyhas thepurpose is to uniquely identifysiblings,siblings; its value has no other meaning. If an application makes use ofPROP-IDPROP-ID, it <bcp14>SHOULD</bcp14> assign a unique identifier to each sibling property of the same name within their embedding component. The same identifier <bcp14>MAY</bcp14> be used for properties of a different name, and it <bcp14>MAY</bcp14> also be assigned to a same-named property that is not a sibling. </t> <t> Resolving duplicate identifier conflicts is specific to the application. Similarly, handling properties where some but not all siblings have a PROP-IDis assigned,assigned is application-specific. </t> </dd> <dt>Format definition:</dt> <dd> <sourcecode name="" type="abnf"><![CDATA[ prop-id-param = "PROP-ID" "=" 1*255(ALPHA / DIGIT / "-"/ "_") ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ PHOTO;PROP-ID=p827:data:image/jpeg;base64,MIICajCCAdOgAwIBAg <...remainder of base64-encoded data...> ]]></sourcecode> </dd> </dl> </section> <section anchor="param-script"> <name>SCRIPT</name> <dl> <dt>Parameter name:</dt> <dd>SCRIPT</dd> <dt>Purpose:</dt><dd>This parameter defines<dd>Defines the scriptin whichthat a property value is written in.</dd> <dt>Description:</dt> <dd> <t>This parameter allows defining a script for a property value without also defining a language as the LANGUAGE parameter would. The value <bcp14>MUST</bcp14> be aScript Subtagscript subtag as defined in <xref target="RFC5646" sectionFormat="of" section="2.2.3"/>. This specification makes use of the SCRIPT parameter in combination with the <xref target="param-phonetic">PHONETIC</xref> parameter. </t> </dd> <dt>Format definition:</dt> <dd> <sourcecode name="" type="abnf"><![CDATA[ script-param = 4ALPHA ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ SCRIPT=Latn ]]></sourcecode> </dd> </dl> </section> <section anchor="param-service-type"> <name>SERVICE-TYPE</name> <dl> <dt>Parameter name:</dt> <dd>SERVICE-TYPE</dd> <dt>Purpose:</dt><dd>To define<dd>Defines the online service name associated with a messaging or social media profile.</dd> <dt>Description:</dt> <dd> <t>This parameter <bcp14>MAY</bcp14> be specified ona IMPPan Instant Messaging and Presence Protocol (IMPP) or a SOCIALPROFILE property to name the online service associated with that property value. Its value iscase-sensitive,case-sensitive; its letter cases <bcp14>MUST</bcp14> be preserved.</t> <t>Several vCard address book implementations currently use an experimental X-SERVICE-TYPE parameter. This specification provides an IANA-registered parameter for the same purpose.</t> </dd> <dt>Format definition:</dt> <dd> <sourcecode name="" type="abnf"><![CDATA[ service-type-param = "SERVICE-TYPE" "=" param-value ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ SOCIALPROFILE;SERVICE-TYPE=Mastodon:https://example.com/@foo ]]></sourcecode> </dd> </dl> </section> <section anchor="param-username"> <name>USERNAME</name> <dl> <dt>Parameter name:</dt> <dd>USERNAME</dd> <dt>Purpose:</dt><dd>To define<dd>Defines ausername,username such as the user of a messaging or social media service.</dd> <dt>Description:</dt> <dd> <t>This parameter <bcp14>MAY</bcp14> be specified onaan IMPP or a SOCIALPROFILE property to name the user with that property value. Its value iscase-sensitive,case-sensitive; its letter cases <bcp14>MUST</bcp14> be preserved. The IMPP or SOCIALPROFILE value type <bcp14>MUST</bcp14> be URI.</t> </dd> <dt>Format definition:</dt> <dd> <sourcecode name="" type="abnf"><![CDATA[ username-param = "USERNAME" "=" param-value ]]></sourcecode> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ SOCIALPROFILE;USERNAME="The Foo":https://example.com/@foo ]]></sourcecode> </dd> </dl> </section> </section> <section anchor="new-values"> <name>New Values</name> <section anchor="value-adr-type-billing"> <name>Billing Address Type Value</name> <dl> <dt>Value:</dt> <dd>billing</dd> <dt>Purpose:</dt><dd>This indicates to use<dd>Indicates using this address for billing, e.g., to send invoices to.</dd> <dt>Conformance:</dt> <dd> <t>This value can be used with the"TYPE"TYPE parameter applied on the"ADR"ADR property.</t> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ ADR;TYPE=billing:;;123 Main Street;Any Town;CA;91921-1234;U.S.A. ]]></sourcecode> </dd> </dl> </section> <section anchor="value-adr-type-delivery"> <name>Delivery Address Type Value</name> <dl> <dt>Value:</dt> <dd>delivery</dd> <dt>Purpose:</dt><dd>This indicates to use<dd>Indicates using this address for delivery, e.g., to send packages to.</dd> <dt>Conformance:</dt> <dd> <t>This value can be used with the"TYPE"TYPE parameter applied on the"ADR"ADR property.</t> </dd> <dt>Example(s):</dt> <dd> <sourcecode name=""><![CDATA[ ADR;TYPE=delivery:;;123 Main Street;Any Town;CA;91921-1234;U.S.A. ]]></sourcecode> </dd> </dl> </section> </section> <section anchor="security-considerations" numbered="true" toc="default"> <name>Security Considerations</name> <t>This specification extendsthe vCard"vCard FormatSpecification.Specification" <xref target="RFC6350"/>. The same security considerations as outlined in <xref target="RFC6350" sectionFormat="of" section="9"/> apply.</t> </section> <section anchor="IANA"><!-- All drafts are required to have an IANA considerations section. See RFC 8126 for a guide.--><name>IANA Considerations</name> <section> <name>Changes to the"vCard Properties" registry</name>vCard Properties Registry</name> <section> <name>Newproperty definitions</name>vCard Property Definitions</name> <t>IANAis requested to addhas added the following entries to the "vCard Properties" registry, as defined inSection 10.3.1. of<xreftarget="RFC6350"/>.</t>target="RFC6350" sectionFormat="of" section="10.3.1"/>.</t> <table anchor="new_properties"> <name>New vCard Properties</name> <thead> <tr> <th align="left">Namespace</th> <th align="left">Property</th> <th align="left">Reference</th> </tr> </thead> <tbody> <tr> <td/> <td align="left">CREATED</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-created"/></td> </tr> <tr> <td/> <td align="left">GRAMGENDER</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-gramgender"/></td> </tr> <tr> <td/> <td align="left">LANGUAGE</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-language"/></td> </tr> <tr> <td/> <td align="left">PRONOUNS</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-pronouns"/></td> </tr> <tr> <td/> <td align="left">SOCIALPROFILE</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-socialprofile"/></td> </tr> </tbody> </table> </section> <section> <name>Updated vCardproperties</name> <t>IANA is requested to addProperties </name> <t> IANA has added <xref target="prop-adr"/> of this document as a reference for the ADRproperty.</t> <t>IANA is requested to addproperty and <xref target="prop-n"/> of this document as a reference for the Nproperty.</t>property in the "vCard Properties" registry. </t> </section> </section> <section> <name>Changes to the"vCard Parameters" registry</name>vCard Parameters Registry</name> <t>IANAis requested to addhas added the following entries to the "vCard Parameters" registry, as defined inSection 10.3.2. of<xreftarget="RFC6350"/>.</t>target="RFC6350" sectionFormat="of" section="10.3.2"/>.</t> <table anchor="new_parameters"> <name>New vCard Parameters</name> <thead> <tr> <th align="left">Namespace</th> <th align="left">Parameter</th> <th align="left">Reference</th> </tr> </thead> <tbody> <tr> <td/> <td align="left">AUTHOR</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-author"/></td> </tr> <tr> <td/> <td align="left">AUTHOR-NAME</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-author-name"/></td> </tr> <tr> <td/> <td align="left">CREATED</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-created"/></td> </tr> <tr> <td/> <td align="left">DERIVED</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-derived"/></td> </tr> <tr> <td/> <td align="left">LABEL</td> <td align="left"> <xref target="RFC6350" sectionFormat="comma" section="6.3.1"/> andthis document,RFC 9554, <xref target="param-label"/> </td> </tr> <tr> <td/> <td align="left">PHONETIC</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-phonetic"/></td> </tr> <tr> <td/> <td align="left">PROP-ID</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-propid"/></td> </tr> <tr> <td/> <td align="left">SCRIPT</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-script"/></td> </tr> <tr> <td/> <td align="left">SERVICE-TYPE</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-service-type"/></td> </tr> <tr> <td/> <td align="left">USERNAME</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-username"/></td> </tr> </tbody> </table> </section> <section> <name>Changes to the"vCardvCard PropertyValues" registry</name>Values Registry</name> <t>IANAis requested to addhas added the following entries to the "vCard Property Values" registry, as defined inSection 10.3.4. of<xreftarget="RFC6350"/>.</t>target="RFC6350" sectionFormat="of" section="10.3.4"/>.</t> <table anchor="new_values"> <name>New vCard Property Values</name> <thead> <tr> <th align="left">Property</th> <th align="left">Value</th> <th align="left">Reference</th> </tr> </thead> <tbody> <tr> <td align="left">GRAMGENDER</td> <td align="left">animate</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-gramgender"/></td> </tr> <tr> <td align="left">GRAMGENDER</td> <td align="left">common</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-gramgender"/></td> </tr> <tr> <td align="left">GRAMGENDER</td> <td align="left">feminine</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-gramgender"/></td> </tr> <tr> <td align="left">GRAMGENDER</td> <td align="left">inanimate</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-gramgender"/></td> </tr> <tr> <td align="left">GRAMGENDER</td> <td align="left">masculine</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-gramgender"/></td> </tr> <tr> <td align="left">GRAMGENDER</td> <td align="left">neuter</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="prop-gramgender"/></td> </tr> </tbody> </table> </section> <section anchor="iana-vcard-param-values"> <name>Changes to the"vCardvCard ParameterValues" registry</name>Values Registry</name> <t>IANAis requested to addhas added the following entries to the "vCard Parameter Values" registry, as defined inSection 10.3.4. of<xreftarget="RFC6350"/>.</t>target="RFC6350" sectionFormat="of" section="10.3.4"/>.</t> <table anchor="new_param_values"> <name>New vCard Property and Parameter Values</name> <thead> <tr> <th align="left">Property</th> <th align="left">Parameter</th> <th align="left">Value</th> <th align="left">Reference</th> </tr> </thead> <tbody> <tr> <td align="left">ADR</td> <td align="left">TYPE</td> <td align="left">billing</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="value-adr-type-billing"/></td> </tr> <tr> <td align="left">ADR</td> <td align="left">TYPE</td> <td align="left">delivery</td> <tdalign="left">This document, <xref target="value-adr-type-delivery"/></td> </tr> <tr> <td align="left">ADR</td> <td align="left">TYPE</td> <td align="left">delivery</td> <td align="left">This document,align="left">RFC 9554, <xref target="value-adr-type-delivery"/></td> </tr> <tr> <td align="left">ADR, N</td> <td align="left">PHONETIC</td> <td align="left">ipa</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-phonetic"/></td> </tr> <tr> <td align="left">ADR, N</td> <td align="left">PHONETIC</td> <td align="left">jyut</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-phonetic"/></td> </tr> <tr> <td align="left">ADR, N</td> <td align="left">PHONETIC</td> <td align="left">piny</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-phonetic"/></td> </tr> <tr> <td align="left">ADR, N</td> <td align="left">PHONETIC</td> <td align="left">script</td> <tdalign="left">This document,align="left">RFC 9554, <xref target="param-phonetic"/></td> </tr> </tbody> </table> </section> </section><section> <name>Acknowledgements</name> <t>The definition and examples of the <xref target="param-phonetic">PHONETIC</xref> and <xref target="param-script">SCRIPT</xref> parameters are based on the initial version of <xref target="I-D.calconnect-vobject-i18n"/>.</t> </section></middle> <back> <displayreference target="I-D.calconnect-vobject" to="CALCONNECT-VOBJECT"/> <references> <name>References</name> <references> <name>Normative References</name> <xi:include href="https://www.rfc-editor.org/refs/bibxml/reference.RFC.2119.xml"/> <xi:include href="https://www.rfc-editor.org/refs/bibxml/reference.RFC.3986.xml"/> <xi:include href="https://www.rfc-editor.org/refs/bibxml/reference.RFC.5234.xml"/> <xi:include href="https://www.rfc-editor.org/refs/bibxml/reference.RFC.5646.xml"/> <xi:include href="https://www.rfc-editor.org/refs/bibxml/reference.RFC.6350.xml"/> <xi:include href="https://www.rfc-editor.org/refs/bibxml/reference.RFC.8174.xml"/><xi:include href="https://datatracker.ietf.org/doc/bibxml3/draft-ietf-calext-jscontact.xml"/> <xi:include href="https://datatracker.ietf.org/doc/bibxml3/draft-ietf-calext-jscontact-vcard.xml"/><!-- [I-D.ietf-calext-jscontact] in AUTH48-DONE; companion document RFC 9553 --> <reference anchor="RFC9553" target="https://www.rfc-editor.org/info/rfc9553"> <front> <title>JSContact: A JSON Representation of Contact Data</title> <author initials='R' surname='Stepanek' fullname='Robert Stepanek'> <organization /> </author> <author initials='M' surname='Loffredo' fullname='Mario Loffredo'> <organization /> </author> <date month='May' year='2024' /> </front> <seriesInfo name="RFC" value="9553"/> <seriesInfo name="DOI" value="10.17487/RFC9553"/> </reference> <!--[I-D.ietf-calext-jscontact-vcard] in AUTH48-DONE; companion document RFC 9555 --> <reference anchor="RFC9555" target="https://www.rfc-editor.org/info/rfc9555"> <front> <title>JSContact: Converting from and to vCard</title> <author initials="M." surname="Loffredo" fullname="Mario Loffredo"> <organization>IIT-CNR/Registro.it</organization> </author> <author initials="R." surname="Stepanek" fullname="Robert Stepanek"> <organization>Fastmail</organization> </author> <date month="May" year="2024"/> </front> <seriesInfo name="RFC" value="9555"/> <seriesInfo name="DOI" value="10.17487/RFC9555"/> </reference> </references> </references> <references> <name>Informative References</name><xi:include href="https://datatracker.ietf.org/doc/bibxml3/draft-calconnect-vobject-i18n.xml"/><!--[I-D.calconnect-vobject-i18n] IESG state Expired as of 5/1/24. Entered the long way to get the correct initials--> <reference anchor="I-D.calconnect-vobject" target="https://datatracker.ietf.org/doc/html/draft-calconnect-vobject-i18n-00"> <front> <title>vObject Internationalization</title> <author fullname="Ronald Henry Tse" initials="R." surname="Tse"> <organization>Ribose</organization> </author> <author fullname="Peter Tam" initials="P." surname="Tam"> <organization>Ribose</organization> </author> <author fullname="Michael Douglass" initials="M." surname="Douglass"> <organization>Spherical Cow Group</organization> </author> <date day="8" month="June" year="2018"/> </front> <seriesInfo name="Internet-Draft" value="draft-calconnect-vobject-i18n-00"/> </reference> <reference anchor="CLDRPersonName" target="https://www.unicode.org/reports/tr35/tr35-personNames.html"> <front><title>Technical Standard #35: Unicode<title>Unicode Locale Data Markup Language (LDML) Part 8: PersonNames, Version 43.1</title>Names</title> <author fullname="M. Davis"> <organization/> </author> <author fullname="P. Edberg"> <organization/> </author> <author fullname="R. Gillam"> <organization/> </author> <author fullname="A. Kolisnychenko"> <organization/> </author> <author fullname="M. McKenna"> <organization/> </author><author fullname="others"> <organization/><author> <organization>other CLDR committee members</organization> </author> <date year="2023" month="July"/> </front> <seriesInfo name="Unicode Technical Standard" value="#35"/> <seriesInfo name="Version" value="44.1"/> </reference> <reference anchor="IPA" target="https://www.internationalphoneticalphabet.org/"> <front> <title>International Phonetic Alphabet</title><author/><author><organization>IPA</organization></author> </front> </reference> </references> <section anchor="Acknowledgements" numbered="false"> <name>Acknowledgements</name> <t>The definition and examples of the <xref target="param-phonetic">PHONETIC</xref> and <xref target="param-script">SCRIPT</xref> parameters are based on the early draft version of <xref target="I-D.calconnect-vobject"/>.</t> </section> </back> </rfc>