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-Internet Engineering Task Force (IETF)                      S. Perreault
-Request for Comments: 6351                                      Viagenie
-Category: Standards Track                                    August 2011
-ISSN: 2070-1721
-
-
-                    xCard: vCard XML Representation
-
-Abstract
-
-   This document defines the XML schema of the vCard data format.
-
-Status of This Memo
-
-   This is an Internet Standards Track document.
-
-   This document is a product of the Internet Engineering Task Force
-   (IETF).  It represents the consensus of the IETF community.  It has
-   received public review and has been approved for publication by the
-   Internet Engineering Steering Group (IESG).  Further information on
-   Internet Standards is available in Section 2 of RFC 5741.
-
-   Information about the current status of this document, any errata,
-   and how to provide feedback on it may be obtained at
-   http://www.rfc-editor.org/info/rfc6351.
-
-Copyright Notice
-
-   Copyright (c) 2011 IETF Trust and the persons identified as the
-   document authors.  All rights reserved.
-
-   This document is subject to BCP 78 and the IETF Trust's Legal
-   Provisions Relating to IETF Documents
-   (http://trustee.ietf.org/license-info) in effect on the date of
-   publication of this document.  Please review these documents
-   carefully, as they describe your rights and restrictions with respect
-   to this document.  Code Components extracted from this document must
-   include Simplified BSD License text as described in Section 4.e of
-   the Trust Legal Provisions and are provided without warranty as
-   described in the Simplified BSD License.
-
-
-
-
-
-
-
-
-
-
-
-Perreault                    Standards Track                    [Page 1]
-
-RFC 6351                          xCard                      August 2011
-
-
-Table of Contents
-
-   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  2
-   2.  Conventions  . . . . . . . . . . . . . . . . . . . . . . . . .  2
-   3.  The Schema . . . . . . . . . . . . . . . . . . . . . . . . . .  2
-   4.  Example: Author's XML vCard  . . . . . . . . . . . . . . . . .  3
-   5.  Design Considerations  . . . . . . . . . . . . . . . . . . . .  4
-     5.1.  Extensibility  . . . . . . . . . . . . . . . . . . . . . .  6
-     5.2.  Limitations  . . . . . . . . . . . . . . . . . . . . . . .  7
-   6.  Format Conversions . . . . . . . . . . . . . . . . . . . . . .  8
-   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 10
-   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 11
-     8.1.  Registration of the XML Namespace  . . . . . . . . . . . . 11
-     8.2.  Media Type . . . . . . . . . . . . . . . . . . . . . . . . 11
-   9.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 12
-   10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
-     10.1. Normative References . . . . . . . . . . . . . . . . . . . 12
-     10.2. Informative References . . . . . . . . . . . . . . . . . . 13
-   Appendix A.  Relax NG Schema . . . . . . . . . . . . . . . . . . . 14
-
-1.  Introduction
-
-   vCard [RFC6350] is a data format for representing and exchanging
-   information about individuals and other entities.  It is a text-based
-   format (as opposed to a binary format).  This document defines xCard,
-   an XML [W3C.REC-xml-20081126] representation for vCard.  The
-   underlying data structure is exactly the same, enabling a 1-to-1
-   mapping between the original vCard format and the XML representation.
-   The XML formatting may be preferred in some contexts where an XML
-   engine is readily available and may be reused instead of writing a
-   standalone vCard parser.
-
-   Earlier work on an XML format for vCard was started in 1998 by Frank
-   Dawson [VCARD-DTD].  Sadly, it did not take over the world.
-
-2.  Conventions
-
-   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
-   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
-   document are to be interpreted as described in [RFC2119].
-
-3.  The Schema
-
-   The schema is expressed in the RELAX NG language [ISO.19757-2.2008]
-   and is found in Appendix A.
-
-
-
-
-
-
-Perreault                    Standards Track                    [Page 2]
-
-RFC 6351                          xCard                      August 2011
-
-
-4.  Example: Author's XML vCard
-
-   <?xml version="1.0" encoding="UTF-8"?>
-   <vcards xmlns="urn:ietf:params:xml:ns:vcard-4.0">
-     <vcard>
-       <fn><text>Simon Perreault</text></fn>
-       <n>
-         <surname>Perreault</surname>
-         <given>Simon</given>
-         <additional/>
-         <prefix/>
-         <suffix>ing. jr</suffix>
-         <suffix>M.Sc.</suffix>
-       </n>
-       <bday><date>--0203</date></bday>
-       <anniversary>
-         <date-time>20090808T1430-0500</date-time>
-       </anniversary>
-       <gender><sex>M</sex></gender>
-       <lang>
-         <parameters><pref><integer>1</integer></pref></parameters>
-         <language-tag>fr</language-tag>
-       </lang>
-       <lang>
-         <parameters><pref><integer>2</integer></pref></parameters>
-         <language-tag>en</language-tag>
-       </lang>
-       <org>
-         <parameters><type><text>work</text></type></parameters>
-         <text>Viagenie</text>
-       </org>
-       <adr>
-         <parameters>
-           <type><text>work</text></type>
-           <label><text>Simon Perreault
-   2875 boul. Laurier, suite D2-630
-   Quebec, QC, Canada
-   G1V 2M2</text></label>
-         </parameters>
-         <pobox/>
-         <ext/>
-         <street>2875 boul. Laurier, suite D2-630</street>
-         <locality>Quebec</locality>
-         <region>QC</region>
-         <code>G1V 2M2</code>
-         <country>Canada</country>
-       </adr>
-       <tel>
-
-
-
-Perreault                    Standards Track                    [Page 3]
-
-RFC 6351                          xCard                      August 2011
-
-
-         <parameters>
-           <type>
-             <text>work</text>
-             <text>voice</text>
-           </type>
-         </parameters>
-         <uri>tel:+1-418-656-9254;ext=102</uri>
-       </tel>
-       <tel>
-         <parameters>
-           <type>
-             <text>work</text>
-             <text>text</text>
-             <text>voice</text>
-             <text>cell</text>
-             <text>video</text>
-           </type>
-         </parameters>
-         <uri>tel:+1-418-262-6501</uri>
-       </tel>
-       <email>
-         <parameters><type><text>work</text></type></parameters>
-         <text>simon.perreault@viagenie.ca</text>
-       </email>
-       <geo>
-         <parameters><type><text>work</text></type></parameters>
-         <uri>geo:46.766336,-71.28955</uri>
-       </geo>
-       <key>
-         <parameters><type><text>work</text></type></parameters>
-         <uri>http://www.viagenie.ca/simon.perreault/simon.asc</uri>
-       </key>
-       <tz><text>America/Montreal</text></tz>
-       <url>
-         <parameters><type><text>home</text></type></parameters>
-         <uri>http://nomis80.org</uri>
-       </url>
-     </vcard>
-   </vcards>
-
-5.  Design Considerations
-
-   The general idea is to map vCard parameters, properties, and value
-   types to XML elements.  For example, the "FN" property is mapped to
-   the "fn" element.  In turn, that element contains a text element
-   whose content corresponds to the vCard property's value.
-
-
-
-
-
-Perreault                    Standards Track                    [Page 4]
-
-RFC 6351                          xCard                      August 2011
-
-
-   vCard parameters are also mapped to XML elements.  They are contained
-   in the <parameters> element, which is contained in property elements.
-   For example, the "TYPE" parameter applied to the "TEL" property would
-   look like the following in XML:
-
-     <tel>
-       <parameters>
-         <type>
-           <text>voice</text>
-           <text>video</text>
-         </type>
-       </parameters>
-       <uri>tel:+1-555-555-555</uri>
-     </tel>
-
-   Parameters taking a list of values are simply repeated multiple
-   times, once for each value in the list.
-
-   Properties having structured values (e.g., the "N" property) are
-   expressed by XML element trees.  Element names in that tree (e.g.,
-   "surname", "given", etc.) do not have a vCard equivalent since they
-   are identified by position in plain vCard.
-
-   Line folding is a non-issue in XML.  Therefore, the mapping from
-   vCard to XML is done after the unfolding procedure is carried out.
-   Conversely, the mapping from XML to vCard is done before the folding
-   procedure is carried out.
-
-   A top-level <vcards> element is used as root.  It contains one or
-   more <vcard> elements, each representing a complete vCard.  The
-   <vcards> element MUST be present even when only a single vCard is
-   present in an XML document.
-
-   The group construct (Section 3.2 in [RFC6350]) is represented with
-   the <group> element.  The "name" attribute contains the group's name.
-   For example:
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-Perreault                    Standards Track                    [Page 5]
-
-RFC 6351                          xCard                      August 2011
-
-
-     <vcards>
-       <vcard>
-         <group name="contact">
-           <fn>...</fn>
-           <email>...</email>
-         </group>
-         <group name="media">
-           <photo>...</photo>
-         </group>
-         <categories>...</categories>
-       </vcard>
-     </vcards>
-
-   is equivalent to:
-
-     BEGIN:VCARD
-     VERSION:4.0
-     contact.FN=...
-     contact.EMAIL=...
-     media.PHOTO=...
-     CATEGORIES=...
-     END:VCARD
-
-5.1.  Extensibility
-
-   The original vCard format is extensible.  New properties, parameters,
-   data types and values (collectively known as vCard elements, not to
-   be confused with XML elements) can be registered with IANA (see
-   [RFC6350], Section 10.2).  It is expected that these vCard extensions
-   will also specify extensions to the XML format described in this
-   document.
-
-   New XML vCard property and parameter element names MUST be lower-
-   case.  This is necessary to ensure that round-tripping between XML
-   and plain-text vCard works correctly.
-
-   Unregistered extensions (i.e., those starting with "X-" and
-   "VND-...-") are expressed in XML by using elements starting with "x-"
-   and "vnd-...-".  Usage of XML namespaces [W3C.REC-xml-names-20091208]
-   for extensibility is RECOMMENDED for extensions that have no
-   equivalent in plain-text vCard.  Refer to Section 6 for the
-   implications when converting between plain-text vCard and XML.
-
-
-
-
-
-
-
-
-
-Perreault                    Standards Track                    [Page 6]
-
-RFC 6351                          xCard                      August 2011
-
-
-   Examples:
-
-     <x-my-prop>
-       <parameters>
-         <pref><integer>1</integer></pref>
-       </parameters>
-       <text>value goes here</text>
-     </x-my-prop>
-
-     <ext:my-prop
-         ext:xmlns="http://example.com/extensions/my-vcard">
-       <parameters>
-         <pref><integer>1</integer></pref>
-       </parameters>                 <!-- Core vCard elements  -->
-       <text>value goes here</text>  <!-- are still accessible -->
-     </ext:my-prop>
-
-   Note that extension elements do not need the "X-" or "VND-" prefix in
-   XML.  The XML namespace mechanism is sufficient.
-
-   A vCard XML parser MUST ignore XML elements and attributes for which
-   it doesn't recognize the expanded name.  The normal behavior of
-   ignoring XML processing instructions whose target is not recognized
-   MUST also be followed.
-
-   In the original vCard format, the "VERSION" property was mandatory
-   and played a role in extensibility.  In XML, this property is absent.
-   Its role is played by the vCard core namespace identifier, which
-   includes the version number. vCard revisions will use a different
-   namespace.
-
-   Parameters containing a list of values are expressed using a list of
-   elements in XML (e.g., the <type> element).
-
-5.2.  Limitations
-
-   The schema does not validate the cardinality of properties.  This is
-   a limitation of the schema definition language.  Cardinalities of the
-   original vCard format [RFC6350] MUST still be respected.
-
-   Some constructs (e.g., value enumerations in type parameters) have
-   additional ordering constraints in XML.  This is a result of
-   limitations of the schema definition language, and the order is
-   arbitrary.  The order MUST be respected in XML for the vCard to be
-   valid.  However, reordering as part of conversion to or from plain
-   vCard MAY happen.
-
-
-
-
-
-Perreault                    Standards Track                    [Page 7]
-
-RFC 6351                          xCard                      August 2011
-
-
-6.  Format Conversions
-
-   When new properties or "X-" properties are used, a vCard<->xCard
-   converter might not recognize them or know what the appropriate
-   default value types are, yet they need to be able to preserve the
-   values.  A similar issue arises for unrecognized property parameters.
-   As a result, the following rules are applied when dealing with
-   unrecognized properties and property parameters:
-
-   o  When converting from vCard to xCard:
-
-      *  Any property that does not include a "VALUE" parameter and
-         whose default value type is not known MUST be converted using
-         the value type XML element <unknown>.  The content of that
-         element is the unprocessed value text.
-
-      *  Any unrecognized property parameter MUST be converted using the
-         value type XML element <unknown>, with its content set to the
-         parameter value text, treated as if it were a text value, or
-         list of text values.
-
-      *  The content of "XML" properties is copied as is to XML.
-
-      *  Property and parameter XML element names are converted to
-         lower-case.
-
-      *  Property value escaping is undone.  For example, "\n" becomes a
-         NEWLINE character (ASCII decimal 10).
-
-      *  Double-quoting of parameter values, as well as backslash
-         escaping in parameter values, is undone.  For example,
-         PARAM="\"foo\",\"bar\"" becomes <param>"foo","bar"</param>.
-
-   o  When converting xCard to vCard:
-
-      *  Properties in the vCard 4 namespace:
-
-         +  If the converter knows of a specific plain-text
-            representation for this property, it uses it.  For example,
-            the <adr> element corresponds to the "ADR" property, which
-            is encoded using comma-separated lists separated by
-            semicolons.
-
-         +  Otherwise, the property name is taken from the element name,
-            property parameters are taken from the <parameters> element,
-            and the content of the property is taken from the content of
-            the value element.  If the property element has attributes
-            or contains other XML elements, they are dropped.
-
-
-
-Perreault                    Standards Track                    [Page 8]
-
-RFC 6351                          xCard                      August 2011
-
-
-         +  If a standard property's XML element contains XML elements
-            and attributes for which the converter doesn't recognize the
-            expanded name, they are dropped.  Therefore, it is
-            RECOMMENDED to limit extensions to the property level to
-            ensure that all data is preserved intact in round-trip
-            conversions.
-
-      *  Properties in other namespaces are wrapped as is inside an
-         "XML" property.
-
-      *  Any <unknown> property value XML elements are converted
-         directly into vCard values.  The containing property MUST NOT
-         have a "VALUE" parameter.
-
-      *  Any <unknown> parameter value XML elements are converted as if
-         they were <text> value type XML elements.
-
-      *  Property and parameter names are converted to upper-case.
-
-      *  Property value escaping (Section 3.3 of [RFC6350]) is carried
-         out.  For example, a NEWLINE character (ASCII decimal 10)
-         becomes "\n".
-
-      *  Double-quoting of parameter values, as well as backslash
-         escaping in parameter values, is carried out.  For example,
-         <param>"foo","bar"</param> becomes PARAM="\"foo\",\"bar\"".
-
-
-
-
-
-
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-Perreault                    Standards Track                    [Page 9]
-
-RFC 6351                          xCard                      August 2011
-
-
-   For example, these two vCards are equivalent:
-
-     <?xml version="1.0"?>
-     <vcards xmlns="urn:ietf:params:xml:ns:vcard-4.0">
-       <vcard>
-         <fn><text>J. Doe</text></fn>
-         <n>
-           <surname>Doe</surname>
-           <given>J.</given>
-           <additional/>
-           <prefix/>
-           <suffix/>
-         </n>
-         <x-file>
-           <parameters>
-             <mediatype><text>image/jpeg</text></mediatype>
-           </parameters>
-           <unknown>alien.jpg</unknown>
-         </x-file>
-         <a xmlns="http://www.w3.org/1999/xhtml"
-            href="http://www.example.com">My web page!</a>
-       </vcard>
-     </vcards>
-
-
-     BEGIN:VCARD
-     VERSION:4.0
-     FN:J. Doe
-     N:Doe;J.;;
-     X-FILE;MEDIATYPE=image/jpeg:alien.jpg
-     XML:<a xmlns="http://www.w3.org/1999/xhtml"\n
-         href="http://www.example.com">My web page!</a>
-     END:VCARD
-
-7.  Security Considerations
-
-   All the security considerations applicable to plain vCard [RFC6350]
-   are applicable to this document as well.
-
-   XML Signature [W3C.CR-xmldsig-core1-20110303] and XML Encryption
-   [W3C.CR-xmlenc-core1-20110303] can be used with xCard to provide
-   authentication and confidentiality.
-
-
-
-
-
-
-
-
-
-Perreault                    Standards Track                   [Page 10]
-
-RFC 6351                          xCard                      August 2011
-
-
-8.  IANA Considerations
-
-8.1.  Registration of the XML Namespace
-
-   URI:  urn:ietf:params:xml:ns:vcard-4.0
-
-   Registrant Contact:  The IESG <iesg@ietf.org>
-
-   XML:  None.  Namespace URIs do not represent an XML specification.
-
-8.2.  Media Type
-
-   This section defines the MIME media type [RFC4288] for use with
-   vCard-in-XML data.
-
-   To:  ietf-types@iana.org
-
-   Subject:  Registration of media type application/vcard+xml
-
-   Type name:  application
-
-   Subtype name:  vcard+xml
-
-   Required parameters:  none
-
-   Optional parameters:  charset as defined for application/xml in
-      [RFC3023]; per [RFC3023], use of the charset parameter with the
-      value "utf-8" is "STRONGLY RECOMMENDED".
-
-   Encoding considerations:  Same as encoding considerations of
-      application/xml as specified in [RFC3023].
-
-   Security considerations:  This media type has all of the security
-      considerations described in [RFC3023], plus those listed in
-      Section 7.
-
-   Interoperability considerations:  This media type provides an
-      alternative syntax to vCard data [RFC6350] based on XML.
-
-   Published specification:  This specification.
-
-   Applications that use this media type:  Applications that currently
-      make use of the text/vcard media type can use this as an
-      alternative.  In general, applications that maintain or process
-      contact information can use this media type.
-
-
-
-
-
-
-Perreault                    Standards Track                   [Page 11]
-
-RFC 6351                          xCard                      August 2011
-
-
-   Additional information:
-
-      Magic number(s):  none
-
-      File extension(s):  XML data should use ".xml" as the file
-         extension.
-
-      Macintosh file type code(s):  none
-
-   Person & email address to contact for further information:  Simon
-      Perreault <simon.perreault@viagenie.ca>
-
-   Intended usage:  COMMON
-
-   Restrictions on usage:  none
-
-   Author:  Simon Perreault
-
-   Change controller:  IETF
-
-9.  Acknowledgments
-
-   Thanks to the following people for their input:
-
-   Alexey Melnikov, Barry Leiba, Bjorn Hoehrmann, Cyrus Daboo, Joe
-   Hildebrand, Joseph Smarr, Marc Blanchet, Mike Douglass, Peter Saint-
-   Andre, Robins George, Zahhar Kirillov, Zoltan Ordogh.
-
-
-10.  References
-
-10.1.  Normative References
-
-   [ISO.19757-2.2008]
-              International Organization for Standardization,
-              "Information technology -- Document Schema Definition
-              Language (DSDL) -- Part 2: Regular-grammar-based
-              validation -- RELAX NG", ISO International
-              Standard 19757-2, October 2008.
-
-   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
-              Requirement Levels", BCP 14, RFC 2119, March 1997.
-
-   [RFC3023]  Murata, M., St. Laurent, S., and D. Kohn, "XML Media
-              Types", RFC 3023, January 2001.
-
-   [RFC6350]  Perreault, S., "vCard Format Specification", RFC 6350,
-              August 2011.
-
-
-
-Perreault                    Standards Track                   [Page 12]
-
-RFC 6351                          xCard                      August 2011
-
-
-   [W3C.REC-xml-20081126]
-              Paoli, J., Yergeau, F., Maler, E., Bray, T., and C.
-              Sperberg-McQueen, "Extensible Markup Language (XML) 1.0
-              (Fifth Edition)", World Wide Web Consortium
-              Recommendation REC-xml-20081126, November 2008,
-              <http://www.w3.org/TR/2008/REC-xml-20081126>.
-
-   [W3C.REC-xml-names-20091208]
-              Bray, T., Hollander, D., Layman, A., Tobin, R., and H.
-              Thompson, "Namespaces in XML 1.0 (Third Edition)", World
-              Wide Web Consortium Recommendation REC-xml-names-20091208,
-              December 2009,
-              <http://www.w3.org/TR/2009/REC-xml-names-20091208>.
-
-10.2.  Informative References
-
-   [RFC4288]  Freed, N. and J. Klensin, "Media Type Specifications and
-              Registration Procedures", BCP 13, RFC 4288, December 2005.
-
-   [VCARD-DTD]
-              Dawson, F., "The vCard v3.0 XML DTD", Work in Progress,
-              June 1998.
-
-   [W3C.CR-xmldsig-core1-20110303]
-              Roessler, T., Solo, D., Yiu, K., Reagle, J., Hirsch, F.,
-              Eastlake, D., and M. Nystroem, "XML Signature Syntax and
-              Processing Version 1.1", World Wide Web Consortium CR CR-
-              xmldsig-core1-20110303, March 2011,
-              <http://www.w3.org/TR/2011/CR-xmldsig-core1-20110303>.
-
-   [W3C.CR-xmlenc-core1-20110303]
-              Eastlake, D., Reagle, J., Roessler, T., and F. Hirsch,
-              "XML Encryption Syntax and Processing Version 1.1", World
-              Wide Web Consortium CR CR-xmlenc-core1-20110303,
-              March 2011,
-              <http://www.w3.org/TR/2011/CR-xmlenc-core1-20110303>.
-
-
-
-
-
-
-
-
-
-
-
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-Perreault                    Standards Track                   [Page 13]
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-RFC 6351                          xCard                      August 2011
-
-
-Appendix A.  Relax NG Schema
-
-default namespace = "urn:ietf:params:xml:ns:vcard-4.0"
-
-### Section 3.3: vCard Format Specification
-#
-# 3.3
-iana-token = xsd:string { pattern = "[a-zA-Z0-9-]+" }
-x-name = xsd:string { pattern = "x-[a-zA-Z0-9-]+" }
-
-### Section 4: Value types
-#
-# 4.1
-value-text = element text { text }
-value-text-list = value-text+
-
-# 4.2
-value-uri = element uri { xsd:anyURI }
-
-# 4.3.1
-value-date = element date {
-    xsd:string { pattern = "\d{8}|\d{4}-\d\d|--\d\d(\d\d)?|---\d\d" }
-  }
-
-# 4.3.2
-value-time = element time {
-    xsd:string { pattern = "(\d\d(\d\d(\d\d)?)?|-\d\d(\d\d?)|--\d\d)"
-                         ~ "(Z|[+\-]\d\d(\d\d)?)?" }
-  }
-
-# 4.3.3
-value-date-time = element date-time {
-    xsd:string { pattern = "(\d{8}|--\d{4}|---\d\d)T\d\d(\d\d(\d\d)?)?"
-                         ~ "(Z|[+\-]\d\d(\d\d)?)?" }
-  }
-
-# 4.3.4
-value-date-and-or-time = value-date | value-date-time | value-time
-
-# 4.3.5
-value-timestamp = element timestamp {
-    xsd:string { pattern = "\d{8}T\d{6}(Z|[+\-]\d\d(\d\d)?)?" }
-  }
-
-# 4.4
-value-boolean = element boolean { xsd:boolean }
-
-
-
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-
-
-# 4.5
-value-integer = element integer { xsd:integer }
-
-# 4.6
-value-float = element float { xsd:float }
-
-# 4.7
-value-utc-offset = element utc-offset {
-    xsd:string { pattern = "[+\-]\d\d(\d\d)?" }
-  }
-
-# 4.8
-value-language-tag = element language-tag {
-    xsd:string { pattern = "([a-z]{2,3}((-[a-z]{3}){0,3})?|[a-z]{4,8})"
-                         ~ "(-[a-z]{4})?(-([a-z]{2}|\d{3}))?"
-                         ~ "(-([0-9a-z]{5,8}|\d[0-9a-z]{3}))*"
-                         ~ "(-[0-9a-wyz](-[0-9a-z]{2,8})+)*"
-                         ~ "(-x(-[0-9a-z]{1,8})+)?|x(-[0-9a-z]{1,8})+|"
-                         ~ "[a-z]{1,3}(-[0-9a-z]{2,8}){1,2}" }
-  }
-
-### Section 5: Parameters
-#
-# 5.1
-param-language = element language { value-language-tag }?
-
-# 5.2
-param-pref = element pref {
-    element integer {
-      xsd:integer { minInclusive = "1" maxInclusive = "100" }
-    }
-  }?
-
-# 5.4
-param-altid = element altid { value-text }?
-
-# 5.5
-param-pid = element pid {
-    element text { xsd:string { pattern = "\d+(\.\d+)?" } }+
-  }?
-
-# 5.6
-param-type = element type { element text { "work" | "home" }+ }?
-
-# 5.7
-param-mediatype = element mediatype { value-text }?
-
-
-
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-
-
-# 5.8
-param-calscale = element calscale { element text { "gregorian" } }?
-
-# 5.9
-param-sort-as = element sort-as { value-text+ }?
-
-# 5.10
-param-geo = element geo { value-uri }?
-
-# 5.11
-param-tz = element tz { value-text | value-uri }?
-
-### Section 6: Properties
-#
-# 6.1.3
-property-source = element source {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-mediatype },
-    value-uri
-  }
-
-# 6.1.4
-property-kind = element kind {
-    element text { "individual" | "group" | "org" | "location" |
-                   x-name | iana-token }*
-  }
-
-# 6.2.1
-property-fn = element fn {
-    element parameters { param-language, param-altid, param-pid,
-                         param-pref, param-type }?,
-    value-text
-  }
-
-# 6.2.2
-property-n = element n {
-    element parameters { param-language, param-sort-as, param-altid }?,
-    element surname { text }+,
-    element given { text }+,
-    element additional { text }+,
-    element prefix { text }+,
-    element suffix { text }+
-  }
-
-
-
-
-
-
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-
-
-# 6.2.3
-property-nickname = element nickname {
-    element parameters { param-language, param-altid, param-pid,
-                         param-pref, param-type }?,
-    value-text-list
-  }
-
-# 6.2.4
-property-photo = element photo {
-    element parameters { param-altid, param-pid, param-pref, param-type,
-                         param-mediatype }?,
-    value-uri
-  }
-
-# 6.2.5
-property-bday = element bday {
-    element parameters { param-altid, param-calscale }?,
-    (value-date-and-or-time | value-text)
-  }
-
-# 6.2.6
-property-anniversary = element anniversary {
-    element parameters { param-altid, param-calscale }?,
-    (value-date-and-or-time | value-text)
-  }
-
-# 6.2.7
-property-gender = element gender {
-    element sex { "" | "M" | "F" | "O" | "N" | "U" },
-    element identity { text }?
-  }
-
-# 6.3.1
-param-label = element label { value-text }?
-property-adr = element adr {
-    element parameters { param-language, param-altid, param-pid,
-                         param-pref, param-type, param-geo, param-tz,
-                         param-label }?,
-    element pobox { text }+,
-    element ext { text }+,
-    element street { text }+,
-    element locality { text }+,
-    element region { text }+,
-    element code { text }+,
-    element country { text }+
-  }
-
-
-
-
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-
-
-# 6.4.1
-property-tel = element tel {
-    element parameters {
-      param-altid,
-      param-pid,
-      param-pref,
-      element type {
-        element text { "work" | "home" | "text" | "voice"
-                     | "fax" | "cell" | "video" | "pager"
-                     | "textphone" }+
-      }?,
-      param-mediatype
-    }?,
-    (value-text | value-uri)
-  }
-
-# 6.4.2
-property-email = element email {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type }?,
-    value-text
-  }
-
-# 6.4.3
-property-impp = element impp {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type, param-mediatype }?,
-    value-uri
-  }
-
-# 6.4.4
-property-lang = element lang {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type }?,
-    value-language-tag
-  }
-
-# 6.5.1
-property-tz = element tz {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type, param-mediatype }?,
-    (value-text | value-uri | value-utc-offset)
-  }
-
-
-
-
-
-
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-
-
-# 6.5.2
-property-geo = element geo {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type, param-mediatype }?,
-    value-uri
-  }
-
-# 6.6.1
-property-title = element title {
-    element parameters { param-language, param-altid, param-pid,
-                         param-pref, param-type }?,
-    value-text
-  }
-
-# 6.6.2
-property-role = element role {
-    element parameters { param-language, param-altid, param-pid,
-                         param-pref, param-type }?,
-    value-text
-  }
-
-# 6.6.3
-property-logo = element logo {
-    element parameters { param-language, param-altid, param-pid,
-                         param-pref, param-type, param-mediatype }?,
-    value-uri
-  }
-
-# 6.6.4
-property-org = element org {
-    element parameters { param-language, param-altid, param-pid,
-                         param-pref, param-type, param-sort-as }?,
-    value-text-list
-  }
-
-# 6.6.5
-property-member = element member {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-mediatype }?,
-    value-uri
-  }
-
-
-
-
-
-
-
-
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-
-
-# 6.6.6
-property-related = element related {
-    element parameters {
-      param-altid,
-      param-pid,
-      param-pref,
-      element type {
-        element text {
-          "work" | "home" | "contact" | "acquaintance" |
-          "friend" | "met" | "co-worker" | "colleague" | "co-resident" |
-          "neighbor" | "child" | "parent" | "sibling" | "spouse" |
-          "kin" | "muse" | "crush" | "date" | "sweetheart" | "me" |
-          "agent" | "emergency"
-        }+
-      }?,
-      param-mediatype
-    }?,
-    (value-uri | value-text)
-  }
-
-# 6.7.1
-property-categories = element categories {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type }?,
-    value-text-list
-  }
-
-# 6.7.2
-property-note = element note {
-    element parameters { param-language, param-altid, param-pid,
-                         param-pref, param-type }?,
-    value-text
-  }
-
-# 6.7.3
-property-prodid = element prodid { value-text }
-
-# 6.7.4
-property-rev = element rev { value-timestamp }
-
-# 6.7.5
-property-sound = element sound {
-    element parameters { param-language, param-altid, param-pid,
-                         param-pref, param-type, param-mediatype }?,
-    value-uri
-  }
-
-
-
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-
-
-# 6.7.6
-property-uid = element uid { value-uri }
-
-# 6.7.7
-property-clientpidmap = element clientpidmap {
-    element sourceid { xsd:positiveInteger },
-    value-uri
-  }
-
-# 6.7.8
-property-url = element url {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type, param-mediatype }?,
-    value-uri
-  }
-
-# 6.8.1
-property-key = element key {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type, param-mediatype }?,
-    (value-uri | value-text)
-  }
-
-# 6.9.1
-property-fburl = element fburl {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type, param-mediatype }?,
-    value-uri
-  }
-
-# 6.9.2
-property-caladruri = element caladruri {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type, param-mediatype }?,
-    value-uri
-  }
-
-# 6.9.3
-property-caluri = element caluri {
-    element parameters { param-altid, param-pid, param-pref,
-                         param-type, param-mediatype }?,
-    value-uri
-  }
-
-
-
-
-
-
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-
-
-# Top-level grammar
-property = property-adr | property-anniversary | property-bday
-         | property-caladruri | property-caluri | property-categories
-         | property-clientpidmap | property-email | property-fburl
-         | property-fn | property-geo | property-impp | property-key
-         | property-kind | property-lang | property-logo
-         | property-member | property-n | property-nickname
-         | property-note | property-org | property-photo
-         | property-prodid | property-related | property-rev
-         | property-role | property-gender | property-sound
-         | property-source | property-tel | property-title
-         | property-tz | property-uid | property-url
-start = element vcards {
-    element vcard {
-      (property
-       | element group {
-           attribute name { text },
-           property*
-         })+
-    }+
-  }
-
-Author's Address
-
-   Simon Perreault
-   Viagenie
-   2600 boul. Laurier, Suite 625
-   Quebec, QC  G1V 4W1
-   Canada
-
-   Phone: +1 418 656 9254
-   EMail: simon.perreault@viagenie.ca
-   URI:   http://www.viagenie.ca
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-Perreault                    Standards Track                   [Page 22]
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