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The 'XML2RFC' version 3 Vocabulary
draft-hoffman-xml2rfc-18

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft whose latest revision state is "Replaced".
Author Paul E. Hoffman
Last updated 2015-05-26
Replaced by draft-iab-xml2rfc, draft-iab-xml2rfc, RFC 7991
RFC stream (None)
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Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date (None)
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Send notices to (None)
draft-hoffman-xml2rfc-18
will only be the case for files not processed by the prep tool.

   An example of the <relref> element with text content might be:

         See <relref section="2.3" target="RFC7878">
         the protocol overview</relref>
         for more information.

   An HTML formatter might generate:

         See
         <a href="http://www.rfc-editor.org/info/rfc7878#s-2.3">
         the protocol overview</a>
         for more information.

   This element appears as a child element of: <annotation>
   (Section 2.3), <blockquote> (Section 2.10), <cref> (Section 2.16),
   <dd> (Section 2.18), <dt> (Section 2.21), <em> (Section 2.22), <li>
   (Section 2.29), <name> (Section 2.32), <preamble> (Section 3.6),
   <strong> (Section 2.50), <sub> (Section 2.51), <sup> (Section 2.52),
   <t> (Section 2.53), <td> (Section 2.56), <th> (Section 2.58), and
   <tt> (Section 2.62).

   Content model: only text content.

2.44.1.  'derivedLink' attribute

   This attribute is filled in by the prep tool.  This is the link that
   is derived from combining the URI from the reference, a "#"
   character, and the relative part that is either a copy of the
   "relative" attribute or a section number derived from the "section"
   attribute.

2.44.2.  'derivedRemoteContent' attribute

   This attribute is filled in by the prep tool.  If the <relref>
   element has no text content, this attribute contains the text for the
   remote link, such as "Section 2.3" or "Table 5".  The prep tool might
   determine this text by reading the target reference and, if it is a
   RFC or Internet-Draft in the v3 format, finding the anchor given in
   the "relative" attribute or derived from the "section" attribute, and
   using the title of that element.

   If the reference is not an RFC or Internet-Draft in the v3 format,
   the text fragment is simply the value of the "relative" or "section"
   attribute.  This will rarely produce a good result in formatted
   output so, for these documents, the <relref> element should contain
   text content.

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2.44.3.  'displayFormat' attribute

   This attribute is used to signal formatters what the desired format
   of the relative reference should be.  Formatters for document types
   that have linking capability should wrap each part of the displayed
   text in live links.  If there is content in the <relref> element,
   formatters will ignore the value of this attribute.

   "of"

      A formatter should display the relative reference as the contents
      of the "derivedRemoteContent" attribute followed by a space, the
      word "of", another space, and the value from the "target"
      attribute enclosed in square brackets.

      For example, if Section 2.3 of RFC 7878 has the title "Protocol
      Overview", with an input of:

         See
         <relref section="2.3" target="RFC7878" displayFormat="of"/>
         for an overview.

      An HTML formatter might generate:

         See
         <a href="http://www.rfc-editor.org/info/rfc7878#s-2.3">
         Section 2.3</a> of
         [<a href="#RFC7878">RFC7878</a>]
         for an overview.

      Note that "displayFormat='of'" is the default for <relref> so it
      does not need to be given in a <relref> element if that format is
      desired.

   "comma"

      A formatter should display the relative reference as the value
      from the "target" attribute enclosed in square brackets, a comma,
      a space, and the "derivedRemoteContent" attribute.

      For example, if Section 2.3 of RFC 7878 has the title "Protocol
      Overview", with an input of:

         See
         <relref section="2.3" target="RFC7878" displayFormat="comma"/>,
         for an overview.

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      An HTML formatter might generate:

         See
         [<a href="#RFC7878">RFC7878</a>],
         <a href="http://www.rfc-editor.org/info/rfc7878#s-2.3">
         Section 2.3</a>, for an overview.

   "parens"

      A formatter should display the relative reference as the value
      from the "target" attribute enclosed in square brackets, a space,
      a left parenthesis, the "derivedRemoteContent" attribute, and a
      right parenthesis.

      For example, if Section 2.3 of RFC 7878 has the title "Protocol
      Overview", with an input of:

         See
         <relref section="2.3" target="RFC7878" displayFormat="parens"/>
         for an overview.

      An HTML formatter might generate

         See
         [<a href="#RFC7878">RFC7878</a>]
         (<a href="http://www.rfc-editor.org/info/rfc7878#s-2.3">
         Section 2.3</a>)
         for an overview.

   Allowed values:

   o  "of" (default)

   o  "comma"

   o  "parens"

2.44.4.  'relative' attribute

   Specifies a relative reference from the URI in the target reference.
   This value is given without the leading "#" character found in
   relative references.

2.44.5.  'section' attribute

   Specifies a section of the target reference.  If the reference is not
   an RFC or Internet-Draft, it is an error.

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2.44.6.  'target' attribute (mandatory)

   The anchor of the reference for this element.  If this value is not
   an anchor to a <reference> or <referencegroup> element, it is an
   error.  If the reference at the target has no URI, it is an error.

2.45.  <rfc>

   This is the root element of the xml2rfc vocabulary.

   Content model:

   In this order:

   1.  Optional <link> elements (Section 2.30)

   2.  One <front> element (Section 2.26)

   3.  One <middle> element (Section 2.31)

   4.  One optional <back> element (Section 2.8)

2.45.1.  'category' attribute

   Deprecated; instead, use the "name" attribute in <seriesInfo>.

2.45.2.  'consensus' attribute

   Affects the generated boilerplate.  Note that the values of "no" and
   "yes" are deprecated and are replaced by "false" (the default) and
   "true".

   See [RFC5741] for more information.

   Allowed values:

   o  "no"

   o  "yes"

   o  "false" (default)

   o  "true"

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2.45.3.  'docName' attribute

   Deprecated; instead, use the "value" attribute in <seriesInfo>.

2.45.4.  'expiresDate' attribute

   Says with an Internet Draft expires.  This value is filled in by the
   prep tool.

2.45.5.  'indexInclude' attribute

   Specifies whether or not a formatter is requested to include an index
   in generated files.  If the souce file has no <iref> elements, an
   index is never generated.  This option is useful for generating
   documents where the source document has <iref> elements but the
   author no longer wants an index.

   Allowed values:

   o  "true" (default)

   o  "false"

2.45.6.  'ipr' attribute

   Represents the Intellectual Property status of the document.  See
   Appendix A.1 for details.

   Allowed values:

   o  "full2026"

   o  "noDerivativeWorks2026"

   o  "none"

   o  "full3667"

   o  "noModification3667"

   o  "noDerivatives3667"

   o  "full3978"

   o  "noModification3978"

   o  "noDerivatives3978"

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   o  "trust200811"

   o  "noModificationTrust200811"

   o  "noDerivativesTrust200811"

   o  "trust200902"

   o  "noModificationTrust200902"

   o  "noDerivativesTrust200902"

   o  "pre5378Trust200902"

2.45.7.  'iprExtract' attribute

   Identifies a single section within the document for which extraction
   "as-is" is explicitly allowed (only relevant for historic values of
   the "ipr" attribute).

2.45.8.  'number' attribute

   Deprecated; instead, use the "value" attribute in <seriesInfo>.

2.45.9.  'obsoletes' attribute

   A comma-separated list of RFC numbers or Internet-Draft names.

   The prep tool will parse the attribute value so that incorrect
   references can be detected.

2.45.10.  'prepTime' attribute

   The date that the XML was processed by a preparation tool.  This is
   included in the XML file just before it is saved to disk.  The value
   is formatted using the format from [RFC3339].

2.45.11.  'scripts' attribute

   The list of scripts needed to render this document.  The list is
   comma-separated, with no spaces allowed.  The order is unimportant.
   The names come from [UAX24].  This attriute is normally filled in by
   the prep tool.  For example, if the document has Chinese characters
   in it, the value might be "Common,Latin,Han".

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2.45.12.  'seriesNo' attribute

   Deprecated; instead, use the "value" attribute in <seriesInfo>.

2.45.13.  'sortRefs' attribute

   Specifies whether or not the prep tool will sort the references in
   each reference section.

   Allowed values:

   o  "true"

   o  "false" (default)

2.45.14.  'submissionType' attribute

   The document stream.

   See Section 2 of [RFC5741] for details.

   Allowed values:

   o  "IETF" (default)

   o  "IAB"

   o  "IRTF"

   o  "independent"

2.45.15.  'symRefs' attribute

   Specifies whether or not a formatter is requested to use symbolic
   references (such as "[RFC2119]").  If the value for this is "false",
   the references come out as numbers (such as "[3]").

   Allowed values:

   o  "true" (default)

   o  "false"

2.45.16.  'tocDepth' attribute

   Specifies number of levels of heading that formatter is requested to
   include in the table of contents; the default is "3".

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2.45.17.  'tocInclude' attribute

   Specifies whether or not a formatter is requested to include a table
   of contents in generated files.

   Allowed values:

   o  "true" (default)

   o  "false"

2.45.18.  'updates' attribute

   A comma-separated list of RFC numbers or Internet-Draft names.

   The prep tool will parse the attribute value so that incorrect
   references can be detected.

2.45.19.  'version' attribute

   Specifies the version of xml2rfc syntax used in this document.  The
   only expected value (for now) is "3".

2.46.  <section>

   Represents a section (when inside a <middle> element) or an appendix
   (when inside a <back> element).

   Sub-sections are created by nesting <section> elements inside
   <section> elements.  Sections are allowed to be empty.

   This element appears as a child element of: <back> (Section 2.8),
   <boilerplate> (Section 2.11), <middle> (Section 2.31), and <section>
   (Section 2.46).

   Content model:

   In this order:

   1.  One optional <name> element (Section 2.32)

   2.  In any order:

       *  <artwork> elements (Section 2.5)

       *  <aside> elements (Section 2.6)

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       *  <blockquote> elements (Section 2.10)

       *  <dl> elements (Section 2.20)

       *  <figure> elements (Section 2.25)

       *  <iref> elements (Section 2.27)

       *  <ol> elements (Section 2.34)

       *  <sourcecode> elements (Section 2.48)

       *  <t> elements (Section 2.53)

       *  <table> elements (Section 2.54)

       *  <texttable> elements (Section 3.8)

       *  <ul> elements (Section 2.63)

   3.  Optional <section> elements (Section 2.46)

2.46.1.  'anchor' attribute

   Document-wide unique identifier for this section.

2.46.2.  'numbered' attribute

   If set to "false", the formatter is requested to not display a
   section number.  The prep tool will verify that such a section is not
   followed by a numbered section in a part, and will verify that the
   section is a top-level section.

   Allowed values:

   o  "true" (default)

   o  "false"

2.46.3.  'pn' attribute

   The number for this section.  This is described in more detail in
   Appendix B.2.

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2.46.4.  'removeInRFC' attribute

   If set to "true", the formatter is requested to mark this section
   with a paragraph at the beginning of the section indicating that it
   should be removed before the document is published as an RFC.

   Allowed values:

   o  "true"

   o  "false" (default)

2.46.5.  'title' attribute

   Deprecated.  Use <name> instead.

2.46.6.  'toc' attribute

   Indicates to a formatter whether or not the section is to be included
   in a table of contents, if such a table of contents is produced.
   This only takes effect if the level of the section would have
   appeared in the table of contents based on the "tocDepth" attribute
   of the <rfc> element, and of course only if the table of contents is
   being created based on the "tocInclude" attribute of the <rfc>
   element.  If this is set to "exclude", any section below this one
   will be excluded as well.  The "default" value indicates to include
   the section if it would be included by the tocDepth attribute of the
   <rfc> element.

   Allowed values:

   o  "include"

   o  "exclude"

   o  "default" (default)

2.47.  <seriesInfo>

   Specifies the document series in which this document appears, and
   also specifies an identifier within that series.

   A processing tool determines if it is working on an RFC or an
   Internet-Draft by inspecting the "name" attribute of a <seriesInfo>
   element inside the <front> element inside the <rfc> element, looking
   for "rfc" or "Internet-Draft".  (Specifying neither value in any of
   the <seriesInfo> elements can be useful for producing other types of
   documents, but is out-of-scope for this specification.)

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   It is invalid to have multiple <seriesInfo> elements inside the
   <front> element inside the <rfc> element that have "name" values of
   "rfc", or that have "name" values of "Internet-Draft", or that have
   both "rfc" and "Internet-Draft".

   This element appears as a child element of: <front> (Section 2.26),
   and <reference> (Section 2.40; deprecated in this context).

   Content model: this element does not have any contents.

2.47.1.  'asciiName' attribute

   The ASCII equivalent of the name field.

2.47.2.  'asciiValue' attribute

   The ASCII equivalent of the value field.

2.47.3.  'name' attribute (mandatory)

   The name of the series.

   Some of the values for "name" interact as follows:

   o  If a <front> element contains a <seriesInfo> element with a name
      of "Internet-Draft", it can also have at most one additional
      <seriesInfo> element with a name of "std", "bcp", "fyi", "exp", or
      "historic" to indicate the intended status of this Internet Draft,
      if it were to be later published as an RFC.  If such an additional
      <seriesInfo> element has one of those names, the value attribute
      for that name MUST be "".

   o  If a <front> element contains a <seriesInfo> element with a name
      of "rfc", it can also have at most one additional <seriesInfo>
      element with a name of "std", "bcp", or "fyi" to indicate the
      current status of this RFC.  If such an additional <seriesInfo>
      element has one of those names, the value attribute for that name
      MUST be the number within that series.  That <front> element might
      also contain an additional <seriesInfo> with the name "exp" or
      "historic" and a value of "" to indicate the status of the RFC.

   o  A <front> element that has a <seriesInfo> element that has the
      name "Internet-Draft" MUST NOT also have a <seriesInfo> element
      that has the name "rfc".

   o  The DOI for the referenced document.  This MUST NOT be used when
      <seriesInfo> element is an eventual child element of a <rfc>
      element, only as an enventual child of a <reference> element.  The

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      value attribute should use the form specified in [DOI].

   Other values might be added at a later time by the RFC Editor.

2.47.4.  'value' attribute (mandatory)

   The identifier within the series specified by the "name" attribute.

   For BCPs, FYIs, RFCs, and STDs this is the number within the series.
   For Internet-Drafts, it is the full draft name (ending with the two-
   digit version number).  For DOIs, the value is given such as
   "10.123456/rfc1149", (the actual value will be specified later in
   [DOI]).

   The name in the value should be the document name without any file
   extension.  For Internet Drafts, the value for this attribute should
   be "draft-ietf-somewg-someprotocol-07", not
   "draft-ietf-somewg-someprotocol-07.txt".

2.48.  <sourcecode>

   This element allows the inclusion of sourcecode into the document.

   <sourcecode> provides full control of horizontal whitespace and line
   breaks.  It is thus useful for source code and formal languages (such
   as ABNF or the RNC notation used in this document).  When rendered,
   sourcecode is always shown in a monospace font.

   For artwork such as character-based art, diagrams of message layouts,
   and so on, use the <artwork> element instead.

   A common problem authors have with <sourcecode> is that the XML
   processor returns errors if the text in the artwork contains either
   the "&" or "<" character, or the string "]]>".  To avoid these
   problems, the "&" and "<" characters may be escaped using the strings
   "&amp;" and "&lt;", respectively; the "]]>" string can be represented
   as "]]&gt;".  Alternatively, they may be surrounded in a CDATA
   structure: "<![CDATA[]]>".  For example:

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   Desired output:
      allowed-chars = "." | "," | "&" | "<" | ">" | "|"

   Using escaping:
   <sourcecode>
      allowed-chars = "." | "," | "&amp;" | "&lt;" | "&gt;" | "|"
   </sourcecode>

   Using CDATA:
   <sourcecode>
   <![CDATA[   allowed-chars = "." | "," | "&" | "<" | ">" | "|"]]>
   </sourcecode>

   Using CDATA is not a panacea, but it does help prevent having to use
   escapes in places where using using escapes can cause other problems,
   such as difficulty of inclusion from other documents.

   Output formatters that do pagination should attempt to keep source
   code on a single page.  This is to prevent source code that is split
   across pages from looking like two separate pieces of code.

   This element appears as a child element of: <blockquote>
   (Section 2.10), <dd> (Section 2.18), <figure> (Section 2.25), <li>
   (Section 2.29), <section> (Section 2.46), <td> (Section 2.56), and
   <th> (Section 2.58).

   Content model: only text content.

2.48.1.  'anchor' attribute

   Document-wide unique identifier for this sourcecode.

2.48.2.  'name' attribute

   A filename suitable for the contents (such as for extraction to a
   local file).  This attribute can be helpful for other kinds of tools
   (such as automated syntax checkers which work by extracting the
   source code).  Note that the "name" attribute does not need to be
   unique for artwork elements in a document.  If multiple sourcecode
   elements have the same name attribute, a formatter might assume that
   the elements are all fragments of a single file, and such a formatter
   can collect those fragments for later processing.

2.48.3.  'pn' attribute

   The number for this sourceode within the section.  The numbering is
   shared with other elements of a section.  This is described in more
   detail in Appendix B.2.

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2.48.4.  'src' attribute

   The URI reference of a source file ([RFC3986]).

2.48.5.  'type' attribute

   Specifies the type of the sourcecode.  The value of this attribute is
   free text with certain values designated as preferred.  If the prep
   tool encounters a value for "type" that is not one of the preferred
   values, it can issue a warning but should still use the sourcecode as
   if it had no "type" attribute.

   The preferred values for <sourcecode> types are:

   o  abnf

   o  asn.1

   o  bash

   o  c++

   o  c

   o  cbor

   o  dtd

   o  java

   o  javascript

   o  json

   o  mib

   o  perl

   o  pseudocode

   o  python

   o  rnc

   o  xml

   The RFC Editor will maintain a complete list of the preferred values
   on its web site, and that list is expected to be updated over time.

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   Thus, a consumer of v3 XML should not cause a failure when it
   encounters an unexpected type.

2.49.  <street>

   Provides a street address.

   This element appears as a child element of: <postal> (Section 2.37).

   Content model: only text content.

2.49.1.  'ascii' attribute

   The ASCII equivalent of the street address.

2.50.  <strong>

   Indicates text that is semantically strong.  This element will be
   displayed as bold after processing.  This element can be combined
   with other character formatting elements, and the formatting will be
   additive.

   This element appears as a child element of: <annotation>
   (Section 2.3), <blockquote> (Section 2.10), <cref> (Section 2.16),
   <dd> (Section 2.18), <dt> (Section 2.21), <em> (Section 2.22), <li>
   (Section 2.29), <preamble> (Section 3.6), <refcontent>
   (Section 2.39), <sub> (Section 2.51), <sup> (Section 2.52), <t>
   (Section 2.53), <td> (Section 2.56), <th> (Section 2.58), and <tt>
   (Section 2.62).

   Content model:

   In any order:

   o  Text

   o  <bcp14> elements (Section 2.9)

   o  <cref> elements (Section 2.16)

   o  <em> elements (Section 2.22)

   o  <eref> elements (Section 2.24)

   o  <iref> elements (Section 2.27)

   o  <relref> elements (Section 2.44)

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   o  <sub> elements (Section 2.51)

   o  <sup> elements (Section 2.52)

   o  <tt> elements (Section 2.62)

   o  <xref> elements (Section 2.66)

2.51.  <sub>

   Causes the text to be displayed as subscript, approximately half a
   letter-height lower than normal text.  This element can be combined
   with other character formatting elements, and the formatting will be
   additive.

   This element appears as a child element of: <annotation>
   (Section 2.3), <blockquote> (Section 2.10), <cref> (Section 2.16),
   <dd> (Section 2.18), <dt> (Section 2.21), <em> (Section 2.22), <li>
   (Section 2.29), <preamble> (Section 3.6), <refcontent>
   (Section 2.39), <strong> (Section 2.50), <t> (Section 2.53), <td>
   (Section 2.56), <th> (Section 2.58), and <tt> (Section 2.62).

   Content model:

   In any order:

   o  Text

   o  <bcp14> elements (Section 2.9)

   o  <cref> elements (Section 2.16)

   o  <em> elements (Section 2.22)

   o  <eref> elements (Section 2.24)

   o  <iref> elements (Section 2.27)

   o  <relref> elements (Section 2.44)

   o  <strong> elements (Section 2.50)

   o  <tt> elements (Section 2.62)

   o  <xref> elements (Section 2.66)

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2.52.  <sup>

   Causes the text to be displayed as superscript, approximately half a
   letter-height higher than normal text.  This element can be combined
   with other character formatting elements, and the formatting will be
   additive.

   This element appears as a child element of: <annotation>
   (Section 2.3), <blockquote> (Section 2.10), <cref> (Section 2.16),
   <dd> (Section 2.18), <dt> (Section 2.21), <em> (Section 2.22), <li>
   (Section 2.29), <preamble> (Section 3.6), <refcontent>
   (Section 2.39), <strong> (Section 2.50), <t> (Section 2.53), <td>
   (Section 2.56), <th> (Section 2.58), and <tt> (Section 2.62).

   Content model:

   In any order:

   o  Text

   o  <bcp14> elements (Section 2.9)

   o  <cref> elements (Section 2.16)

   o  <em> elements (Section 2.22)

   o  <eref> elements (Section 2.24)

   o  <iref> elements (Section 2.27)

   o  <relref> elements (Section 2.44)

   o  <strong> elements (Section 2.50)

   o  <tt> elements (Section 2.62)

   o  <xref> elements (Section 2.66)

2.53.  <t>

   Contains a paragraph of text.

   This element appears as a child element of: <abstract> (Section 2.1),
   <aside> (Section 2.6), <blockquote> (Section 2.10), <dd>
   (Section 2.18), <li> (Section 2.29), <list> (Section 3.4), <note>
   (Section 2.33), <section> (Section 2.46), <td> (Section 2.56), and
   <th> (Section 2.58).

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   Content model:

   In any order:

   o  Text

   o  <bcp14> elements (Section 2.9)

   o  <cref> elements (Section 2.16)

   o  <em> elements (Section 2.22)

   o  <eref> elements (Section 2.24)

   o  <iref> elements (Section 2.27)

   o  <list> elements (Section 3.4)

   o  <relref> elements (Section 2.44)

   o  <spanx> elements (Section 3.7)

   o  <strong> elements (Section 2.50)

   o  <sub> elements (Section 2.51)

   o  <sup> elements (Section 2.52)

   o  <tt> elements (Section 2.62)

   o  <vspace> elements (Section 3.10)

   o  <xref> elements (Section 2.66)

2.53.1.  'anchor' attribute

   Document-wide unique identifier for this paragraph.

2.53.2.  'hangText' attribute

   Deprecated.  Instead use <dd> inside of a definition list (<dl>).

2.53.3.  'keepWithNext' attribute

   Acts as a hint to the output formatters that do pagination to do a
   best effort attempt to keep the paragraph with the next element,
   whatever that happens to be.  For example, the HTML output @media
   print CSS might translate this to page-break-after: avoid.  For PDF,

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   the paginator could attempt to keep the paragraph with the next
   element.  Note: this attribute is strictly a hint and not always
   actionable.

   Allowed values:

   o  "false" (default)

   o  "true"

2.53.4.  'keepWithPrevious' attribute

   Acts as a hint to the output formatters that do pagination to do a
   best effort attempt to keep the paragraph with the previous element,
   whatever that happens to be.  For example, the HTML output @media
   print CSS might translate this to page-break-before: avoid.  For PDF,
   the paginator could attempt to keep the paragraph with the previous
   element.  Note: this attribute is strictly a hint and not always
   actionable.

   Allowed values:

   o  "false" (default)

   o  "true"

2.53.5.  'pn' attribute

   The number for this paragraph within the section.  The numbering is
   shared with other elements of a section.  This is described in more
   detail in Appendix B.2.

2.54.  <table>

   Contains a table with a caption with the table number.  If the
   element contains a <name> element, the caption will also show that
   name.

   Insde the <table> element is optionlly a <thead> element to contain
   the rows that will be the table's heading and optionally a <tfoot>
   element to contain the rows of the table's footer.  If the XML is
   converted to a representation that has page breaks (such as PDFs, or
   printed HTML), the header and footer are meant to appear on each
   page.

   This element appears as a child element of: <aside> (Section 2.6),
   and <section> (Section 2.46).

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   Content model:

   In this order:

   1.  One optional <name> element (Section 2.32)

   2.  Optional <iref> elements (Section 2.27)

   3.  One optional <thead> element (Section 2.59)

   4.  One or more <tbody> elements (Section 2.55)

   5.  One optional <tfoot> element (Section 2.57)

2.54.1.  'anchor' attribute

   Document-wide unique identifier for this table.

2.54.2.  'pn' attribute

   The number for this table.  This is described in more detail in
   Appendix B.2.

2.55.  <tbody>

   A container for a set of body rows for a table.

   This element appears as a child element of: <table> (Section 2.54).

   Content model:

   One or more <tr> elements (Section 2.61)

2.55.1.  'anchor' attribute

   Document-wide unique identifier for the tbody.

2.55.2.  'pn' attribute

   The number for this table part within the section.  The numbering is
   shared with other elements of a section.  This is described in more
   detail in Appendix B.2.

2.56.  <td>

   A cell in a table row.

   This element appears as a child element of: <tr> (Section 2.61).

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   Content model:

   Either:

      One or more <t> elements (Section 2.53)

   Or:

      In any order, but at least one of:

      *  Text

      *  <artwork> elements (Section 2.5)

      *  <bcp14> elements (Section 2.9)

      *  <br> elements (Section 2.12)

      *  <cref> elements (Section 2.16)

      *  <dl> elements (Section 2.20)

      *  <em> elements (Section 2.22)

      *  <eref> elements (Section 2.24)

      *  <figure> elements (Section 2.25)

      *  <iref> elements (Section 2.27)

      *  <ol> elements (Section 2.34)

      *  <relref> elements (Section 2.44)

      *  <sourcecode> elements (Section 2.48)

      *  <strong> elements (Section 2.50)

      *  <sub> elements (Section 2.51)

      *  <sup> elements (Section 2.52)

      *  <tt> elements (Section 2.62)

      *  <ul> elements (Section 2.63)

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      *  <xref> elements (Section 2.66)

2.56.1.  'align' attribute

   Controls whether the content of the cell appears left justified
   (default), centered, or right justified.  Note that "center" or
   "right" probably only work well in cells with plain text; any other
   elements might make the contents render badly.

   Allowed values:

   o  "left" (default)

   o  "center"

   o  "right"

2.56.2.  'anchor' attribute

   Document-wide unique identifier for the cell.

2.56.3.  'border' attribute

   The width of the border for this cell.  The default is 0, meaning no
   border.

2.56.4.  'colspan' attribute

   The number of columns that the cell to span.  For example, setting
   "colspan='3'" indicates that the cell occupies the same horizontal
   space as three cells in the row above or below this one.

2.56.5.  'rowspan' attribute

   The number of rows that the cell to span.  For example, setting
   "rowspan='3'" indicates that the cell occupies the same vertical
   space as three rows.

2.57.  <tfoot>

   A container for a set of footer rows for a table.

   This element appears as a child element of: <table> (Section 2.54).

   Content model:

   One or more <tr> elements (Section 2.61)

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2.57.1.  'anchor' attribute

   Document-wide unique identifier for the tfoot.

2.57.2.  'pn' attribute

   The number for this table part within the section.  The numbering is
   shared with other elements of a section.  This is described in more
   detail in Appendix B.2.

2.58.  <th>

   A cell in a table row.  When rendered, this will normally come out in
   boldface; other than that, there is no difference between this and
   the <td> element.

   This element appears as a child element of: <tr> (Section 2.61).

   Content model:

   Either:

      One or more <t> elements (Section 2.53)

   Or:

      In any order, but at least one of:

      *  Text

      *  <artwork> elements (Section 2.5)

      *  <bcp14> elements (Section 2.9)

      *  <br> elements (Section 2.12)

      *  <cref> elements (Section 2.16)

      *  <dl> elements (Section 2.20)

      *  <em> elements (Section 2.22)

      *  <eref> elements (Section 2.24)

      *  <figure> elements (Section 2.25)

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      *  <iref> elements (Section 2.27)

      *  <ol> elements (Section 2.34)

      *  <relref> elements (Section 2.44)

      *  <sourcecode> elements (Section 2.48)

      *  <strong> elements (Section 2.50)

      *  <sub> elements (Section 2.51)

      *  <sup> elements (Section 2.52)

      *  <tt> elements (Section 2.62)

      *  <ul> elements (Section 2.63)

      *  <xref> elements (Section 2.66)

2.58.1.  'align' attribute

   Controls whether the content of the cell appears left justified
   (default), centered, or right justified.  Note that "center" or
   "right" probably only work well in cells with plain text; any other
   elements might make the contents render badly.

   Allowed values:

   o  "left" (default)

   o  "center"

   o  "right"

2.58.2.  'anchor' attribute

   Document-wide unique identifier for the row.

2.58.3.  'border' attribute

   The width of the border for this cell.  The default is 0, meaning no
   border.

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2.58.4.  'colspan' attribute

   The number of columns that the cell to span.  For example, setting
   "colspan='3'" indicates that the cell occupies the same horizontal
   space as three cells in the row above or below this one.

2.58.5.  'pn' attribute

   The number for this table part within the section.  The numbering is
   shared with other elements of a section.  This is described in more
   detail in Appendix B.2.

2.58.6.  'rowspan' attribute

   The number of rows that the cell to span.  For example, setting
   "rowspan='3'" indicates that the cell occupies the same vertical
   space as three rows.

2.59.  <thead>

   A container for a set of header rows for a table.

   This element appears as a child element of: <table> (Section 2.54).

   Content model:

   One or more <tr> elements (Section 2.61)

2.59.1.  'anchor' attribute

   Document-wide unique identifier for the thead.

2.59.2.  'pn' attribute

   The number for this table part within the section.  The numbering is
   shared with other elements of a section.  This is described in more
   detail in Appendix B.2.

2.60.  <title>

   Represents the document title.

   When this element appears in the <front> element of the current
   document, the title might also appear in page headers or footers.  If
   it is long (~40 characters), the "abbrev" attribute is used to
   specify an abbreviated variant.

   This element appears as a child element of: <front> (Section 2.26).

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   Content model: only text content.

2.60.1.  'abbrev' attribute

   Specifies an abbreviated variant of the document title.

2.60.2.  'ascii' attribute

   The ASCII equivalent of the title.

2.61.  <tr>

   A row of a table.

   This element appears as a child element of: <tbody> (Section 2.55),
   <tfoot> (Section 2.57), and <thead> (Section 2.59).

   Content model:

   In any order, but at least one of:

   o  <td> elements (Section 2.56)

   o  <th> elements (Section 2.58)

2.61.1.  'anchor' attribute

   Document-wide unique identifier for the row.

2.61.2.  'border' attribute

   The width of the border for this row.  The default is 0, meaning no
   border.  If the cells in this row also have "border" attributes,
   those values override this value for those cells.

2.61.3.  'pn' attribute

   The number for this table part within the section.  The numbering is
   shared with other elements of a section.  This is described in more
   detail in Appendix B.2.

2.62.  <tt>

   Causes the text to be displayed in a constant-width font.  This
   element can be combined with other character formatting elements, and
   the formatting will be additive.

   This element appears as a child element of: <annotation>

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   (Section 2.3), <blockquote> (Section 2.10), <cref> (Section 2.16),
   <dd> (Section 2.18), <dt> (Section 2.21), <em> (Section 2.22), <li>
   (Section 2.29), <name> (Section 2.32), <preamble> (Section 3.6),
   <refcontent> (Section 2.39), <strong> (Section 2.50), <sub>
   (Section 2.51), <sup> (Section 2.52), <t> (Section 2.53), <td>
   (Section 2.56), and <th> (Section 2.58).

   Content model:

   In any order:

   o  Text

   o  <bcp14> elements (Section 2.9)

   o  <cref> elements (Section 2.16)

   o  <em> elements (Section 2.22)

   o  <eref> elements (Section 2.24)

   o  <iref> elements (Section 2.27)

   o  <relref> elements (Section 2.44)

   o  <strong> elements (Section 2.50)

   o  <sub> elements (Section 2.51)

   o  <sup> elements (Section 2.52)

   o  <xref> elements (Section 2.66)

2.63.  <ul>

   An unordered list.  The labels on the items will be symbols picked by
   the formatter.

   This element appears as a child element of: <abstract> (Section 2.1),
   <aside> (Section 2.6), <blockquote> (Section 2.10), <dd>
   (Section 2.18), <li> (Section 2.29), <note> (Section 2.33), <section>
   (Section 2.46), <td> (Section 2.56), and <th> (Section 2.58).

   Content model:

   One or more <li> elements (Section 2.29)

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2.63.1.  'anchor' attribute

   Document-wide unique identifier for the list.

2.63.2.  'empty' attribute

   Defines whether or not the label is empty. empty="true" indicates
   that no label be shown.

   Allowed values:

   o  "false" (default)

   o  "true"

2.63.3.  'pn' attribute

   The number for this list within the section.  The numbering is shared
   with other elements of a section.  This is described in more detail
   in Appendix B.2.

2.63.4.  'spacing' attribute

   Defines whether or not there is a blank line between entries.
   spacing="normal" indicates a single blank line, while
   spacing="compact" indicates no space between.

   Allowed values:

   o  "normal" (default)

   o  "compact"

2.64.  <uri>

   Contains a web address associated with the author.

   The contents should be a valid URI (see Section 3 of [RFC3986]).

   This element appears as a child element of: <address> (Section 2.2).

   Content model: only text content.

2.65.  <workgroup>

   This element is used to specify the Working Group (IETF) or Research
   Group (IRTF) from which the document originates, if any.  The
   recommended format is the official name of the Working Group (with

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   some capitalization).

   In Internet-Drafts, this is used in the upper left corner of the
   boilerplate, replacing the "Network Working Group" string.
   Formatting software can append the words "Working Group" or "Research
   Group", depending on the "submissionType" property on the <rfc>
   element (Section 2.45.14).

   This element appears as a child element of: <front> (Section 2.26).

   Content model: only text content.

2.66.  <xref>

   A reference to an anchor in this document.  Formatters that have
   links (such as HTML and PDF) are likely to render <xref> elements as
   live internal links.  This element is useful for referring to
   references in the References section, to specific sections of this
   document, to specific figures, and so on.  The "target" attribute is
   required.

   When processing an <xref> element, the prep tool fills in the
   "derivedContent" attribute if there is no content in the <xref>
   element; otherwise, it leaves that attribute undefined.  If the
   "derivedContent" attribute exists, a formatter should ignore the
   content of the <xref> element when it creates its output; this will
   only be the case for files not processed by the prep tool.

   This element appears as a child element of: <annotation>
   (Section 2.3), <blockquote> (Section 2.10), <c> (Section 3.1), <cref>
   (Section 2.16), <dd> (Section 2.18), <dt> (Section 2.21), <em>
   (Section 2.22), <li> (Section 2.29), <name> (Section 2.32),
   <postamble> (Section 3.5), <preamble> (Section 3.6), <strong>
   (Section 2.50), <sub> (Section 2.51), <sup> (Section 2.52), <t>
   (Section 2.53), <td> (Section 2.56), <th> (Section 2.58), <tt>
   (Section 2.62), and <ttcol> (Section 3.9).

   Content model: only text content.

2.66.1.  'derivedContent' attribute

   This attribute is filled in by the prep tool if there is no content
   in the <xref> element.  The prep tool fills in this attribute based
   on the value in the "displayFormat" attribute.

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2.66.2.  'format' attribute

   This attribute is used to control the content of the "derivedContent"
   attribute that is filled in by the prep tool.  It also signals to
   formatters what the desired format of the reference should be.
   Formatters for document types that have linking capability should
   wrap the displayed text in live links.

   "counter"

      The "derivedContent" attribute will contain just a counter.  This
      is used for targets that are <section>, <figure>, or <table>.
      Using "format='counter'" where the target is any other type of
      element is an error.

      For example, with an input of:

         <section anchor="overview">Protocol Overview</section>
         . . .
         See Section <xref target="overview" format="counter"/>
         for an overview.

      An HTML formatter might generate "See Section <a href="#
      overview">1.7</a> for an overview.".

   "default"

      The "derivedContent" attribute will contain a text fragment that
      describes the referenced part completely, such as "[XML]" for a
      target that is a <reference>, or "Section 2" or "Table 4" for a
      target to a non-reference.

      For example, with an input of:

         <section anchor="overview">Protocol Overview</section>
         . . .
         See <xref target="overview"/> for an overview.

      An HTML formatter might generate "See <a href="#overview">Section
      1.7</a> for an overview.".

   "none"

      Deprecated.

   "title"

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      If the target is a <reference> element, the "derivedContent"
      attribute will contain the name of the reference, extracted from
      the <title> child of the <front> child of the reference.  Or, if
      the target element has a <name> child element, the
      "derivedContent" attribute will contain the text content of that
      <name> element concatenated with the text content of each
      descendant node of <name> (that is, stripping out all of the XML
      markup, leaving only the text).  Or, if the target element does
      not contain a <name> child element, the "derivedContent" attribute
      will contain the name of the "anchor" attribute of that element
      with no other adornment.

   Allowed values:

   o  "default" (default)

   o  "title"

   o  "counter"

   o  "none"

2.66.3.  'pageno' attribute

   Deprecated.

   Allowed values:

   o  "true"

   o  "false" (default)

2.66.4.  'target' attribute (mandatory)

   Identifies the document component being referenced.  The value needs
   to match the value of the "anchor" attribute of an element in the
   document, otherwise it is an error.

2.67.  <svg> (in namespace http://www.w3.org/2000/svg)

   This element holds SVG art.  The use of SVG in Internet Drafts and
   RFCs is covered in much more detail in [SVGforRFCs].

   This element appears as a child element of: <artwork> (Section 2.5).

   Content model: any elements.

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3.  Elements from v2 That Have Been Deprecated

   This section lists the elements from v2 that have been deprecated.
   Note that some elements in v3 have attributes from v2 that are
   deprecated; those are not listed here.

3.1.  <c>

   Deprecated.  Instead, use <tr>, <td>, and <th>.

   This element appears as a child element of: <texttable>
   (Section 3.8).

   Content model:

   In any order:

   o  Text

   o  <bcp14> elements (Section 2.9)

   o  <cref> elements (Section 2.16)

   o  <em> elements (Section 2.22)

   o  <eref> elements (Section 2.24)

   o  <iref> elements (Section 2.27)

   o  <spanx> elements (Section 3.7)

   o  <strong> elements (Section 2.50)

   o  <sub> elements (Section 2.51)

   o  <sup> elements (Section 2.52)

   o  <tt> elements (Section 2.62)

   o  <xref> elements (Section 2.66)

3.2.  <facsimile>

   Deprecated.  The <email> element is a much more useful way to get in
   touch with authors.

   This element appears as a child element of: <address> (Section 2.2).

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   Content model: only text content.

3.3.  <format>

   Deprecated.  If the goal is to provide a single URI for a reference,
   use the "target" attribute on <reference> instead.

   This element appears as a child element of: <reference>
   (Section 2.40).

   Content model: this element does not have any contents.

3.3.1.  'octets' attribute

   Deprecated.

3.3.2.  'target' attribute

   Deprecated.

3.3.3.  'type' attribute (mandatory)

   Deprecated.

3.4.  <list>

   Deprecated.  Instead, use <dl> for list/@style "hanging"; <ul> for
   list/@style "empty" or "symbols"; and <ol> for list/@style "letters",
   "numbers", "counter", or "format".

   This element appears as a child element of: <t> (Section 2.53).

   Content model:

   One or more <t> elements (Section 2.53)

3.4.1.  'counter' attribute

   Deprecated.  The functionality of this attribute has been replaced
   with <ol>/@start.

3.4.2.  'hangIndent' attribute

   Deprecated.  Use <dl> instead.

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3.4.3.  'style' attribute

   Deprecated.

3.5.  <postamble>

   Deprecated.  Instead, use a regular paragraph after the figure or
   table.

   This element appears as a child element of: <figure> (Section 2.25),
   and <texttable> (Section 3.8).

   Content model:

   In any order:

   o  Text

   o  <bcp14> elements (Section 2.9)

   o  <cref> elements (Section 2.16)

   o  <em> elements (Section 2.22)

   o  <eref> elements (Section 2.24)

   o  <iref> elements (Section 2.27)

   o  <spanx> elements (Section 3.7)

   o  <strong> elements (Section 2.50)

   o  <sub> elements (Section 2.51)

   o  <sup> elements (Section 2.52)

   o  <tt> elements (Section 2.62)

   o  <xref> elements (Section 2.66)

3.6.  <preamble>

   Deprecated.  Instead, use a regular paragraph before the figure or
   table.

   This element appears as a child element of: <figure> (Section 2.25),
   and <texttable> (Section 3.8).

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   Content model:

   In any order:

   o  Text

   o  <bcp14> elements (Section 2.9)

   o  <cref> elements (Section 2.16)

   o  <em> elements (Section 2.22)

   o  <eref> elements (Section 2.24)

   o  <iref> elements (Section 2.27)

   o  <spanx> elements (Section 3.7)

   o  <strong> elements (Section 2.50)

   o  <sub> elements (Section 2.51)

   o  <sup> elements (Section 2.52)

   o  <tt> elements (Section 2.62)

   o  <xref> elements (Section 2.66)

3.7.  <spanx>

   Deprecated.

   This element appears as a child element of: <annotation>
   (Section 2.3), <c> (Section 3.1), <postamble> (Section 3.5),
   <preamble> (Section 3.6), and <t> (Section 2.53).

   Content model: only text content.

3.7.1.  'style' attribute

   Deprecated.  Instead of <spanx style="emph">, use <em>; instead of
   <spanx style="strong">, use <strong>; instead of <spanx
   style="verb">, use <tt>.

3.7.2.  'xml:space' attribute

   Deprecated.

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   Allowed values:

   o  "default"

   o  "preserve" (default)

3.8.  <texttable>

   Deprecated.  Use <table> instead.

   This element appears as a child element of: <aside> (Section 2.6),
   and <section> (Section 2.46).

   Content model:

   In this order:

   1.  One optional <name> element (Section 2.32)

   2.  One optional <preamble> element (Section 3.6)

   3.  One or more <ttcol> elements (Section 3.9)

   4.  Optional <c> elements (Section 3.1)

   5.  One optional <postamble> element (Section 3.5)

3.8.1.  'align' attribute

   Deprecated

   Allowed values:

   o  "left"

   o  "center" (default)

   o  "right"

3.8.2.  'anchor' attribute

   Deprecated

3.8.3.  'style' attribute

   Deprecated.

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3.8.4.  'suppress-title' attribute

   Deprecated.

   Allowed values:

   o  "true"

   o  "false" (default)

3.8.5.  'title' attribute

   Deprecated.

3.9.  <ttcol>

   Deprecated.  Instead, use <tr>, <td>, and <th>.

   This element appears as a child element of: <texttable>
   (Section 3.8).

   Content model:

   In any order:

   o  <cref> elements (Section 2.16)

   o  <eref> elements (Section 2.24)

   o  <iref> elements (Section 2.27)

   o  <xref> elements (Section 2.66)

   o  Text

3.9.1.  'align' attribute

   Deprecated.

   Allowed values:

   o  "left" (default)

   o  "center"

   o  "right"

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3.9.2.  'width' attribute

   Deprecated.

3.10.  <vspace>

   Deprecated.  In earlier versions of this format, <vspace> was often
   used to get an extra blank line in a list element; in the v3
   vocabulary, that can be done instead by using multiple <t> elements
   inside the <li> element.  Other uses have no direct replacement.

   This element appears as a child element of: <t> (Section 2.53).

   Content model: this element does not have any contents.

3.10.1.  'blankLines' attribute

   Deprecated.

4.  Internationalization Considerations

   This format is based on [XML], thus does not have any issues
   representing arbitrary Unicode [UNICODE] characters in text content.
   The RFC Editor may restrict some of the characters that can be used
   in a particular RFC; the rules for such restrictions are covered in
   [NONASCII].

5.  Security Considerations

   The "name" attribute on the <artwork> element (Section 2.5.5) can be
   used to derive a filename for saving to a local file system.
   Trusting this kind of information without pre-processing is a known
   security risk; see Section 4.3 of [RFC6266] for more information.

   The "src" attribute on the <artwork> element can be used to read
   files from the local system.  Processing tools must be careful to not
   accept dangerous values for the filename, particularly those that
   contain absolute references outside the current directory.

   The "type" attribute of the <artwork> and <sourcecode> elements is
   meant to encourage formatters to automatically extract known types of
   content from an RFC or Internet Draft.  While extraction is probably
   safe, those tools might also think that they could further process
   the extracted content such as by rendering artwork or executing code.
   Doing so without first sanity-checking the extracted content is
   clearly a terrible idea from a security perspective.  More generally,
   a tool that is reading XML input needs to be suspicious of any
   content that it intends to post-process.

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   All security considerations related to XML processing are relevant as
   well (see Section 7 of [RFC3470]).

6.  IANA Considerations

6.1.  Internet Media Type Registration

   IANA maintains the registry of Internet media types [BCP13] at
   <http://www.iana.org/assignments/media-types>.

   This document updates the specification for the Internet media type
   "application/rfc+xml" from the one in [XML2RFCv2].  The following is
   to be registered with IANA.

   Type name:  application

   Subtype name:  rfc+xml

   Required parameters:  There are no required parameters.

   Optional parameters:  "charset": This parameter has identical
      semantics as the charset parameter of the "application/xml" media
      type specified in Section 9.1 of [RFC7303].

   Encoding considerations:  Identical to those of "application/xml" as
      described in Section 9.1 of [RFC7303].

   Security considerations:  As defined in Section 5.  In addition, as
      this media type uses the "+xml" convention, it inherits the
      security considerations described in Section 10 of [RFC7303].

   Interoperability considerations:  N/A

   Published specification:  This specification.

   Applications that use this media type:  Applications that transform
      xml2rfc to output representations such as plain text or HTML, plus
      additional analysis tools.

   Fragment identifier considerations:  The "anchor" attribute is used
      for assigning document-wide unique identifiers that can be used as
      shorthand pointers, as described in Section 2.8 of [XPOINTER].

   Additional information:

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      Deprecated alias names for this type:  None.

      Magic number(s):  As specified for "application/xml" in Section
         9.1 of [RFC7303].

      File extension(s):  .xml or .rfcxml when disambiguation from other
         XML files is needed

      Macintosh file type code(s):  TEXT

   Person & email address to contact for further information:  See
      Authors Section.

   Intended usage:  COMMON

   Restrictions on usage:  N/A

   Author:  See Authors Section.

   Change controller:  RFC Series Editor (rse@rfc-editor.org)

6.2.  Link Relation Registration

   The following is a proposed addition to [LINKRELATIONS].

   Relation Name: convertedFrom

   Description: The document linked to was later converted to the
   document that contains this link relation.  For example, an RFC can
   have a link to the Internet Draft that became the RFC; in that case,
   the link relation would be "convertedFrom".

   Reference: This document.

   Notes: This relation is different than "predecessor-version" in that
   "predecessor-version" is for items in a version control system.  It
   is also different that "previous" in that this relation is used for
   converted resources, not those that are part of a sequence of
   resources.

   Application Data: none

7.  Acknowledgments

   Thanks to everybody who reviewed this document and provided feedback
   and/or specification text.  Thanks especially go to Julian Reschke
   for editing [XML2RFCv2] and those who provided feedback on that
   document.

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   We also thank Marshall T. Rose for both the original design and the
   reference implementation of the "xml2rfc" processor.

8.  References

8.1.  Normative References

   [XML]            Maler, E., Yergeau, F., Paoli, J., Sperberg-McQueen,
                    M., and T. Bray, "Extensible Markup Language (XML)
                    1.0 (Fifth Edition)", W3C Recommendation REC-xml-
                    20081126, November 2008,
                    <http://www.w3.org/TR/2008/REC-xml-20081126/>.

                    Latest version available at
                    <http://www.w3.org/TR/xml>.

   [XML2RFCv2]      Reschke, J., "The 'XML2RFC' version 2 Vocabulary",
                    draft-iab-xml2rfc (work in progress), 2014.

8.2.  Informative References

   [BCP13]          Freed, N., Klensin, J., and T. Hansen, "Media Type
                    Specifications and Registration Procedures", BCP 13,
                    RFC 6838, DOI 10.17487/RFC6838, January 2013,
                    <http://www.rfc-editor.org/info/rfc6838>.

   [DOI]            Levine, J., "Assigning Digital Object Identifiers to
                    RFCs", draft-iab-doi (work in progress), 2014.

   [IDGUIDE]        Housley, R., "Guidelines to Authors of Internet-
                    Drafts",
                    <http://www.ietf.org/id-info/guidelines.html>.

   [LINKRELATIONS]  IANA, "Link Relations", <http://www.iana.org/
                    assignments/link-relations/link-relations.xhtml>.

   [NONASCII]       Flanagan, H., "The Use of Non-ASCII Characters in
                    RFCs", draft-flanagan-nonascii (work in progress),
                    2014.

   [RFC2026]        Bradner, S., "The Internet Standards Process --
                    Revision 3", BCP 9, RFC 2026, DOI 10.17487/RFC2026,
                    October 1996,
                    <http://www.rfc-editor.org/info/rfc2026>.

   [RFC2397]        Masinter, L., "The "data" URL scheme", RFC 2397,
                    DOI 10.17487/RFC2397, August 1998,
                    <http://www.rfc-editor.org/info/rfc2397>.

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   [RFC2629]        Rose, M., "Writing I-Ds and RFCs using XML",
                    RFC 2629, DOI 10.17487/RFC2629, June 1999,
                    <http://www.rfc-editor.org/info/rfc2629>.

   [RFC3339]        Klyne, G., Ed. and C. Newman, "Date and Time on the
                    Internet: Timestamps", RFC 3339, DOI 10.17487/
                    RFC3339, July 2002,
                    <http://www.rfc-editor.org/info/rfc3339>.

   [RFC3470]        Hollenbeck, S., Rose, M., and L. Masinter,
                    "Guidelines for the Use of Extensible Markup
                    Language (XML) within IETF Protocols", BCP 70,
                    RFC 3470, DOI 10.17487/RFC3470, January 2003,
                    <http://www.rfc-editor.org/info/rfc3470>.

   [RFC3667]        Bradner, S., "IETF Rights in Contributions",
                    RFC 3667, DOI 10.17487/RFC3667, February 2004,
                    <http://www.rfc-editor.org/info/rfc3667>.

   [RFC3966]        Schulzrinne, H., "The tel URI for Telephone
                    Numbers", RFC 3966, DOI 10.17487/RFC3966,
                    December 2004,
                    <http://www.rfc-editor.org/info/rfc3966>.

   [RFC3978]        Bradner, S., "IETF Rights in Contributions",
                    RFC 3978, DOI 10.17487/RFC3978, March 2005,
                    <http://www.rfc-editor.org/info/rfc3978>.

   [RFC3986]        Berners-Lee, T., Fielding, R., and L. Masinter,
                    "Uniform Resource Identifier (URI): Generic Syntax",
                    STD 66, RFC 3986, DOI 10.17487/RFC3986,
                    January 2005,
                    <http://www.rfc-editor.org/info/rfc3986>.

   [RFC5741]        Daigle, L. and O. Kolkman, "RFC Streams, Headers,
                    and Boilerplates", RFC 5741, DOI 10.17487/RFC5741,
                    December 2009,
                    <http://www.rfc-editor.org/info/rfc5741>.

   [RFC6068]        Duerst, M., Masinter, L., and J. Zawinski, "The
                    'mailto' URI Scheme", RFC 6068, DOI 10.17487/
                    RFC6068, October 2010,
                    <http://www.rfc-editor.org/info/rfc6068>.

   [RFC6266]        Reschke, J., "Use of the Content-Disposition Header
                    Field in the Hypertext Transfer Protocol (HTTP)",
                    RFC 6266, DOI 10.17487/RFC6266, June 2011,
                    <http://www.rfc-editor.org/info/rfc6266>.

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   [RFC6949]        Flanagan, H. and N. Brownlee, "RFC Series Format
                    Requirements and Future Development", RFC 6949,
                    DOI 10.17487/RFC6949, May 2013,
                    <http://www.rfc-editor.org/info/rfc6949>.

   [RFC7303]        Thompson, H. and C. Lilley, "XML Media Types",
                    RFC 7303, DOI 10.17487/RFC7303, July 2014,
                    <http://www.rfc-editor.org/info/rfc7303>.

   [RFC7322]        Heather, H. and S. Ginoza, "RFC Style Guide",
                    RFC 7322, DOI 10.17487/RFC7322, September 2014,
                    <http://www.rfc-editor.org/info/rfc7322>.

   [RFCPOLICY]      RFC Editor, "RFC Editorial Guidelines and
                    Procedures",
                    <http://www.rfc-editor.org/policy.html>.

   [RNC]            Clark, J., "RELAX NG Compact Syntax", OASIS ,
                    November 2002, <http://www.oasis-open.org/
                    committees/relax-ng/compact-20021121.html>.

   [RNG]            ISO/IEC, "Information Technology - Document Schema
                    Definition Languages (DSDL) - Part 2: Regular-
                    Grammar-Based Validation - RELAX NG. Second
                    Edition.", ISO/IEC 19757-2:2008(E), December 2008.

                    A useful source of RNG-related information is
                    <http://relaxng.org/>.

   [SVGforRFCs]     Brownlee, N., "SVG Drawings for RFCs: SVG 1.2 RFC",
                    draft-brownlee-svg-rfc (work in progress), 2015.

   [TLP2.0]         IETF Trust, "Legal Provisions Relating to IETF
                    Documents", February 2009, <http://trustee.ietf.org/
                    license-info/IETF-TLP-2.htm>.

   [TLP3.0]         IETF Trust, "Legal Provisions Relating to IETF
                    Documents", September 2009, <http://
                    trustee.ietf.org/license-info/IETF-TLP-3.htm>.

   [TLP4.0]         IETF Trust, "Legal Provisions Relating to IETF
                    Documents", December 2009, <http://trustee.ietf.org/
                    license-info/IETF-TLP-4.htm>.

   [UAX24]          The Unicode Consortium, "UAX #24: Unicode Script
                    Property", <http://www.unicode.org/reports/tr24/>.

   [UNICODE]        The Unicode Consortium, "The Unicode Standard".

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                    For the latest version, see
                    <http://www.unicode.org/versions/latest/>.

   [USASCII]        American National Standards Institute, "Coded
                    Character Set -- 7-bit American Standard Code for
                    Information Interchange", ANSI X3.4, 1986.

   [XInclude]       Marsh, J., Orchard, D., and D. Veillard, "XML
                    Inclusions (XInclude) Version 1.0 (Second Edition)",
                    W3C Recommendation REC-xinclude-20061115,
                    November 2006, <http://www.w3.org/TR/xinclude/>.

                    Latest version available at
                    <http://www.w3.org/TR/xinclude/>.

   [XPOINTER]       Grosso, P., Maler, E., Marsh, J., and N. Walsh,
                    "XPointer Framework", W3C Recommendation REC-xptr-
                    framework-20030325, March 2003, <http://www.w3.org/
                    TR/2003/REC-xptr-framework-20030325/>.

                    Latest version available at
                    <http://www.w3.org/TR/xptr-framework/>.

Appendix A.  Front Page ('Boilerplate') Generation

A.1.  The /rfc/@ipr Attribute

   This attribute value can take a long list of values, each of which
   describes an IPR policy for the document (Section 2.45.6).  The
   values are not the result of a grand design, but remain simply for
   historic reasons.  Of these values, only a few are currently in use;
   all others are supported by various tools for backwards compatibility
   with old source files.

      *Note:* some variations of the boilerplate are selected based on
      the document's date; therefore it is important to specify the
      "year", "month" and "day" attributes of the <date> element when
      archiving the XML source of an Internet-Draft on the day of
      submission.

   _Disclaimer: THIS ONLY PROVIDES IMPLEMENTATION INFORMATION.  IF YOU
   NEED LEGAL ADVICE, PLEASE CONTACT A LAWYER._ For further information,
   refer to <http://trustee.ietf.org/docs/IETF-Copyright-FAQ.pdf>.

   For the current "Status Of This Memo" text, the submissionType
   attribute (Section 2.45.14) determines whether a statement about
   "Code Components" is inserted (which is the case for the value
   "IETF", which is the default).  Other values, such as "independent",

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   suppress this part of the text.

A.1.1.  Current Values: '*trust200902'

   The name for these values refers to the "IETF TRUST Legal Provisions
   Relating to IETF Documents", sometimes simply called the "TLP", which
   went into effect on February 15, 2009 ([TLP2.0]).  Updates to this
   document were published on September 12, 2009 ([TLP3.0]) and on
   December 28, 2009 ([TLP4.0]), modifying the license for code
   components (see <http://trustee.ietf.org/license-info/> for further
   information).  The actual text is located in Section 6 ("Text To Be
   Included in IETF Documents") of these documents.

   The prep tool automatically produces the "correct" text depending on
   the document's date information (see above):

   +----------+--------------------------------+
   | TLP      | starting with publication date |
   +----------+--------------------------------+
   | [TLP3.0] | 2009-11-01                     |
   | [TLP4.0] | 2010-04-01                     |
   +----------+--------------------------------+

A.1.1.1.  trust200902

   This value should be used unless one of the more specific
   '*trust200902' values is a better fit.  It produces the text in
   Sections 6.a and 6.b of the TLP.

A.1.1.2.  noModificationTrust200902

   This produces additional text from Section 6.c.i of the TLP:

      This document may not be modified, and derivative works of it may
      not be created, except to format it for publication as an RFC or
      to translate it into languages other than English.

      *Note:* this clause is incompatible with RFCs that are published
      on the Standards Track.

A.1.1.3.  noDerivativesTrust200902

   This produces the additional text from Section 6.c.ii of the TLP:

      This document may not be modified, and derivative works of it may
      not be created, and it may not be published except as an Internet-
      Draft.

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      *Note:* this clause is incompatible with RFCs.

A.1.1.4.  pre5378Trust200902

   This produces the additional text from Section 6.c.iii of the TLP,
   frequently called the "pre-5378 escape clause":

      This document may contain material from IETF Documents or IETF
      Contributions published or made publicly available before November
      10, 2008.  The person(s) controlling the copyright in some of this
      material may not have granted the IETF Trust the right to allow
      modifications of such material outside the IETF Standards Process.
      Without obtaining an adequate license from the person(s)
      controlling the copyright in such materials, this document may not
      be modified outside the IETF Standards Process, and derivative
      works of it may not be created outside the IETF Standards Process,
      except to format it for publication as an RFC or to translate it
      into languages other than English.

   See Section 4 of
   <http://trustee.ietf.org/docs/IETF-Copyright-FAQ.pdf> for further
   information about when to use this value.

      *Note:* this text appears under "Copyright Notice", unless the
      document was published before November 2009, in which case it
      appears under "Status Of This Memo".

A.1.2.  Historic Values

A.1.2.1.  Historic Values: '*trust200811'

   The attribute values "trust200811", "noModificationTrust200811" and
   "noDerivativesTrust200811" are similar to their "trust200902"
   counterparts, except that they use text specified in <http://
   trustee.ietf.org/license-info/archive/
   IETF-Trust-License-Policy_11-10-08.pdf>.

A.1.2.2.  Historic Values: '*3978'

   The attribute values "full3978", "noModification3978" and
   "noDerivatives3978" are similar to their counterparts above, except
   that they use text specified in Section 5 of [RFC3978].

A.1.2.3.  Historic Values: '*3667'

   The attribute values "full3667", "noModification3667" and
   "noDerivatives3667" are similar to their counterparts above, except
   that they use text specified in Section 5 of [RFC3667].

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A.1.2.4.  Historic Values: '*2026'

   The attribute values "full2026" and "noDerivativeWorks2026" are
   similar to their counterparts above, except that they use text
   specified in Section 10 of [RFC2026].

   The special value "none" was also used back then, and denied the IETF
   any rights beyond publication as Internet-Draft.

A.2.  The /rfc/@submissionType Attribute

   The RFC Editor publishes documents from different "document streams",
   of which the "IETF stream" is the most prominent one.  Other streams
   are the "independent stream" (used for things such as administrative
   information or April 1st RFCs), the "IAB stream" (Internet
   Architecture Board) and the "IRTF stream" (Internet Research Task
   Force).

   The values for the attribute are "IETF" (the default value),
   "independent", "IAB", and "IRTF".

   Historically, this attribute did not affect the final appearance of
   RFCs, except for subtle differences in Copyright notices.  Nowadays
   (as of [RFC5741]), the stream name appears in the first line of the
   front page, and it also affects the text in the "Status Of This Memo"
   section.

   For current documents, setting submissionType attribute will have the
   following effect:

   o  For RFCs, the stream name appears in the upper left corner of the
      first page (in Internet Drafts, this is either "Network Working
      Group", or the value of the <workgroup> element).

   o  For RFCs, if affects the whole "Status Of This Memo" section (see
      Section 3.2.2 of [RFC5741]).

   o  For all RFCs and Internet Drafts, it determines whether the
      "Copyright Notice" mentions the Copyright on Code Components (see
      TLP, Section "Text To Be Included in IETF Documents").

A.3.  The /rfc/@consensus Attribute

   For some of the publication streams (see Appendix A.2), the "Status
   Of This Memo" section depends on whether there was a consensus to
   publish (again, see Section 3.2.2 of [RFC5741]).

   The consensus attribute can be used to supply this information.  The

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   acceptable values are "true" (the default) and "false"; "yes" and
   "no" from v2 are deprecated.  The effect for the various streams is:

   o  "independent" and "IAB": none.

   o  "IETF": mention that there was an IETF consensus.

   o  "IRTF": mention that there was a research group consensus (where
      the name of the research group is extracted from the <workgroup>
      element).

Appendix B.  The v3 Format and Processing Tools

   This section describes topics that are specific to v3 processing
   tools.  Note that there is some discussion of tools in the main body
   of the document as well.  For example, some elements have
   descriptions of how a processing tool might create output from the
   element.

   The expected design of the tools that will be used with v3 documents
   includes:

   o  A "prep tool" that takes a v3 document, makes many checks, adds
      and changes many attribute values, and creates a file that is a
      "prepared document".  The prepared document is a valid v3
      document.  The prep tool is expected to have many modes:

      *  RFC mode -- The mode used by the RFC Editor to process the
         input from one of the RFC streams, and to process XML produced
         during the RFC editing process.  The restrictions on the
         canonical XML for RFCs, as well as how the non-canonical
         formats will look, are described at <https://
         www.rfc-editor.org/rse/wiki/
         doku.php?id=design:format-and-content-rfcs>.

      *  Draft mode -- The mode used by the Internet Draft submission
         tool.  The restrictions for the XML from this mode will be
         described later.

      *  Diagnostic mode -- A mode that can be used by document authors
         to look for errors or warnings before they submit their
         documents for publication.

      *  Expansion mode -- Produces output whose only change is that the
         XInclude entities are expanded in place.

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   o  Formatting tools that will create HTML, PDF, plain text, and
      possibly other output formats.  These formatters will be created
      by the IETF, but others can create such tools as well.  The IETF
      tools are expected to take prepared documents as input.

   There may also be processing tools that are meant to run on the
   computers of authors.  These tools may be used to produce interim
   versions of the non-canonical representations so that authors can see
   how their XML might later be rendered; to create documents in
   representations different than those supported by the RFC Editor; to
   possibly create documents that are not meant to be Internet Drafts or
   RFCs; and to convert XML that has external information into XML that
   has that external information included.

   The prep tool is expected to have clear error reporting, giving more
   context than just a line number.  For example, the error messages
   should differentiate between errors in XML and those from the v3
   format.

   In v2, the grammar was specified as a DTD.  In v3, the grammar is
   specified only as Relax Next Generation (RNG).  This means that tools
   need to work from the RNG, not from a DTD.  Some of the features of
   the v3 grammar cannot be specified as a DTD.

B.1.  Including External Text

   All tools for the v3 format are expected to support XInclude
   [XInclude].  XInclude specifies a processing model and syntax for
   general purpose inclusion of information that is either on the
   Internet or local to the user's computer.

   In the v3 syntax, XInclude is expressed as the <xi:include> element.
   To use this element, you need to include the "xi" namespace in the
   <rfc> element; that is, you need to specify

   xmlns:xi="http://www.w3.org/2001/XInclude"

   as one of the attributes in the <rfc> element.

   The most common way to use <xi:include> is to pull in references that
   are already formed as XML.  Currently, this can be done from
   xml2rfc.tools.ietf.org, but later is expected to be from the RFC
   Editor.  For example, if a document has three normative references,
   all RFCs, the document might contain:

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   <references>
       <xi:include href="http://xml2rfc.tools.ietf.org/public/rfc/
          bibxml/reference.RFC.2119.xml"/>
       <xi:include href="http://xml2rfc.tools.ietf.org/public/rfc/
          bibxml/reference.RFC.4869.xml"/>
       <xi:include href="http://xml2rfc.tools.ietf.org/public/rfc/
          bibxml/reference.RFC.7169.xml"/>
   </references>

   <xi:include> can be used anywhere an XML element could be used (but
   not where free text is used).  For example, if three Internet Drafts
   are all including a particular paragraph or section verbatim, that
   text can be kept either in a file or somewhere on the web, and be
   included with <xi:include>.  An example of pulling something from the
   local disk would be:

   <x:include href="file://home/chris/ietf/drafts/commontext.xml"/>

   In general, XInclude should be used instead of ENTITY references and
   XML Processor Instructions (PIs) that allow external inclusions.

B.2.  Anchors and IDs

   People writing and reading Internet Drafts and RFCs often want to
   make reference to specific locations in those documents.  In the case
   of RFC authors, it is common to want to reference another part of
   their document, such as "see Section 3.2 of this document".  Readers,
   on the other hand, want to reference part of documents that they
   didn't write, such as "see Section 3.2 of RFC 6949".  The XML
   vocabulary in this document attempts to support both sets of people.

   Authors can leave anchors in a document that can later be used for
   references with the "anchor" attribute.  Anchors can be included in
   the following elements: <artwork>, <aside>, <blockquote>, <cref>,
   <figure>, <li>, <reference>, <referencegroup>, <section>,
   <sourcecode>, <t>, and <table>.  The author can then refer to that
   anchor in the "target" attribute of the <xref> element.

   Readers can refer to any element that has an "anchor" attribute by
   that attribute.  Note, however, that most of the time, elements won't
   have anchors.  In the common case, the reader wants to refer to an
   element that does not have an "anchor" attribute, but that element
   has "pn" attribute.

   Processing tools add the "pn" attribute to many elements during
   processing.  This attribute and its value are automatically generated
   by the tool if the attribute is not there; if the attribute is
   already there, the tool may replace the value.  The same is true for

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   the "irefid" attribute in <iref>.

B.2.1.  Overlapping Values

   In the HTML representation of this XML vocabulary, both anchors and
   "pn" attributes will be used in the "id" attributes of elements.
   Thus, there can be no overlap between the names entered in "anchor"
   attributes, in "slugifiedName" attributes, and those that are
   generated for the "pn" attributes.  Also, there are some values for
   the "anchor" values that are reserved for sections, and those
   sections can only have those anchor values.

   The following rules prevent this overlap:

   o  "pn" for regular sections always has the format "s-nnn", where
      "nnn" is the section or appendix number.  For example, this would
      be "s-2.1.3" for Section 2.1.3 and "s-a" for Appendix A.  For the
      <abstract> element, it is always "s-abstract".  For the <note>
      element, it is always "s-note-nnn", where "nnn" is a sequential
      value.  For the <boilerplate> element, it is always
      "s-boilerplate".

   o  "pn" for <figure> elements always has the format "f-nnn", where
      "nnn" is the figure number.  For example, this would be "f-5" for
      Figure 5.

   o  "pn" for <table> elements always has the format "t-nnn", where
      "nnn" is the figure number.  For example, this would be "t-5" for
      Table 5.

   o  "pn" for all elements not listed above always has the format
      "p-nnn-mmm", where "nnn" is the section number and "mmm" is the
      relative position in the section.  For example, this would be
      "p-2.1.3-7" for the seventh part number in Section 2.1.3.

   o  "slugifiedName" always has the format "n-ttt", where "ttt" is the
      text of the name after slugification.  For example, this would be
      "n-protocol-overview" for the name "Protocol Overview".  The
      actual conversions done in slugification will be specified at a
      later time.

   o  Anchors must never overlap with any of the above.  The easiest way
      to assure that is to not pick an anchor name that starts with a
      single letter followed by a hyphen.  If an anchor does overlap
      with one of the types of names above, the processing tool will
      reject the document.

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Appendix C.  Relax NG Schema

   The following is the RelaxNG schema for the v3 format.

   namespace a = "http://relaxng.org/ns/compatibility/annotations/1.0"
   namespace ns1 = "http://www.w3.org/2000/svg"

   # xml2rfc Version 3 grammar

   rfc =
     element rfc {
       attribute number { text }?,
       [ a:defaultValue = "" ] attribute obsoletes { text }?,
       [ a:defaultValue = "" ] attribute updates { text }?,
       attribute category { text }?,
       [ a:defaultValue = "false" ]
       attribute consensus { "no" | "yes" | "false" | "true" }?,
       attribute seriesNo { text }?,
       attribute ipr {
         "full2026"
         | "noDerivativeWorks2026"
         | "none"
         | "full3667"
         | "noModification3667"
         | "noDerivatives3667"
         | "full3978"
         | "noModification3978"
         | "noDerivatives3978"
         | "trust200811"
         | "noModificationTrust200811"
         | "noDerivativesTrust200811"
         | "trust200902"
         | "noModificationTrust200902"
         | "noDerivativesTrust200902"
         | "pre5378Trust200902"
       }?,
       attribute iprExtract { xsd:IDREF }?,
       [ a:defaultValue = "IETF" ]
       attribute submissionType {
         "IETF" | "IAB" | "IRTF" | "independent"
       }?,
       attribute docName { text }?,
       [ a:defaultValue = "false" ]
       attribute sortRefs { "true" | "false" }?,
       [ a:defaultValue = "true" ]
       attribute symRefs { "true" | "false" }?,
       [ a:defaultValue = "true" ]

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       attribute tocInclude { "true" | "false" }?,
       [ a:defaultValue = "3" ] attribute tocDepth { text }?,
       attribute prepTime { text }?,
       [ a:defaultValue = "true" ]
       attribute indexInclude { "true" | "false" }?,
       attribute version { text }?,
       [ a:defaultValue = "Common,Latin" ] attribute scripts { text }?,
       attribute expiresDate { text }?,
       link*,
       front,
       middle,
       back?
     }

   link =
     element link {
       attribute href { text },
       attribute rel { text }?
     }

   front =
     element front {
       title,
       author+,
       date?,
       area*,
       workgroup*,
       keyword*,
       abstract?,
       seriesInfo*,
       note*,
       boilerplate?
     }

   title =
     element title {
       attribute abbrev { text }?,
       attribute ascii { text }?,
       text
     }

   author =
     element author {
       attribute initials { text }?,
       attribute asciiInitials { text }?,
       attribute surname { text }?,
       attribute asciiSurname { text }?,
       attribute fullname { text }?,

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       attribute role { "editor" }?,
       attribute asciiFullname { text }?,
       organization?,
       address?
     }

   organization =
     element organization {
       attribute abbrev { text }?,
       attribute ascii { text }?,
       text
     }

   address =
     element address { postal?, phone?, facsimile?, email?, uri? }

   postal =
     element postal {
       (city | code | country | region | street)* | postalLine+
     }

   street =
     element street {
       attribute ascii { text }?,
       text
     }

   city =
     element city {
       attribute ascii { text }?,
       text
     }

   region =
     element region {
       attribute ascii { text }?,
       text
     }

   code =
     element code {
       attribute ascii { text }?,
       text
     }

   country =
     element country {
       attribute ascii { text }?,

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       text
     }

   postalLine =
     element postalLine {
       attribute ascii { text }?,
       text
     }

   phone = element phone { text }

   facsimile = element facsimile { text }

   email =
     element email {
       attribute ascii { text }?,
       text
     }

   uri = element uri { text }

   date =
     element date {
       attribute day { text }?,
       attribute month { text }?,
       attribute year { text }?,
       empty
     }

   area = element area { text }

   workgroup = element workgroup { text }

   keyword = element keyword { text }

   abstract =
     element abstract {
       attribute anchor { xsd:ID }?,
       (dl | ol | t | ul)+
     }

   note =
     element note {
       attribute title { text }?,
       name,
       attribute pn { text }?,
       [ a:defaultValue = "false" ]
       attribute removeInRFC { "true" | "false" }?,

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       (dl | ol | t | ul)+
     }

   boilerplate =
     element boilerplate {
       attribute pn { text }?,
       section+
     }

   middle = element middle { section+ }

   section =
     element section {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       attribute title { text }?,
       [ a:defaultValue = "true" ]
       attribute numbered { "true" | "false" }?,
       [ a:defaultValue = "default" ]
       attribute toc { "include" | "exclude" | "default" }?,
       [ a:defaultValue = "false" ]
       attribute removeInRFC { "true" | "false" }?,
       name?,
       (artwork
        | aside
        | blockquote
        | dl
        | figure
        | iref
        | ol
        | sourcecode
        | t
        | table
        | texttable
        | ul)*,
       section*
     }

   name =
     element name {
       attribute slugifiedName { text }?,
       (text | cref | eref | relref | tt | xref)*
     }

   t =
     element t {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,

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       attribute hangText { text }?,
       [ a:defaultValue = "false" ]
       attribute keepWithNext { "false" | "true" }?,
       [ a:defaultValue = "false" ]
       attribute keepWithPrevious { "false" | "true" }?,
       (text
        | bcp14
        | cref
        | em
        | eref
        | iref
        | \list
        | relref
        | spanx
        | strong
        | sub
        | sup
        | tt
        | vspace
        | xref)*
     }

   aside =
     element aside {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       (artwork | dl | figure | iref | \list | ol | t | table | ul)*
     }

   blockquote =
     element blockquote {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       attribute cite { text }?,
       attribute quotedFrom { text }?,
       ((artwork | dl | figure | ol | sourcecode | t | ul)+
        | (text
           | bcp14
           | cref
           | em
           | eref
           | iref
           | relref
           | strong
           | sub
           | sup
           | tt
           | xref)+)

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     }

   \list =
     element list {
       [ a:defaultValue = "empty" ] attribute style { text }?,
       attribute hangIndent { text }?,
       attribute counter { text }?,
       t+
     }

   ol =
     element ol {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       [ a:defaultValue = "1" ] attribute type { text }?,
       [ a:defaultValue = "1" ] attribute start { text }?,
       attribute group { text }?,
       [ a:defaultValue = "normal" ]
       attribute spacing { "normal" | "compact" }?,
       li+
     }

   ul =
     element ul {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       [ a:defaultValue = "normal" ]
       attribute spacing { "normal" | "compact" }?,
       [ a:defaultValue = "false" ]
       attribute empty { "false" | "true" }?,
       li+
     }

   li =
     element li {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       ((artwork | dl | figure | ol | sourcecode | t | ul)+
        | (text
           | bcp14
           | cref
           | em
           | eref
           | iref
           | relref
           | strong
           | sub
           | sup

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           | tt
           | xref)+)
     }

   dl =
     element dl {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       [ a:defaultValue = "normal" ]
       attribute spacing { "normal" | "compact" }?,
       [ a:defaultValue = "true" ]
       attribute hanging { "false" | "true" }?,
       (dt, dd)+
     }

   dt =
     element dt {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       (text
        | bcp14
        | cref
        | em
        | eref
        | iref
        | relref
        | strong
        | sub
        | sup
        | tt
        | xref)*
     }

   dd =
     element dd {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       ((artwork | dl | figure | ol | sourcecode | t | ul)+
        | (text
           | bcp14
           | cref
           | em
           | eref
           | iref
           | relref
           | strong
           | sub
           | sup

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           | tt
           | xref)+)
     }

   xref =
     element xref {
       attribute target { xsd:IDREF },
       [ a:defaultValue = "false" ]
       attribute pageno { "true" | "false" }?,
       [ a:defaultValue = "default" ]
       attribute format { "default" | "title" | "counter" | "none" }?,
       attribute derivedContent { text }?,
       text
     }

   relref =
     element relref {
       attribute target { xsd:IDREF },
       [ a:defaultValue = "of" ]
       attribute displayFormat { "of" | "comma" | "parens" }?,
       (attribute section { text },
        attribute relative { text }?)?,
       attribute derivedRemoteContent { text }?,
       attribute derivedLink { text }?,
       text
     }

   eref =
     element eref {
       attribute target { text },
       text
     }

   iref =
     element iref {
       attribute item { text },
       [ a:defaultValue = "" ] attribute subitem { text }?,
       [ a:defaultValue = "false" ]
       attribute primary { "true" | "false" }?,
       [ a:defaultValue = "" ] attribute irefid { text }?,
       empty
     }

   cref =
     element cref {
       attribute anchor { xsd:ID }?,
       attribute source { text }?,
       [ a:defaultValue = "true" ]

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       attribute display { "true" | "false" }?,
       (text | em | eref | relref | strong | sub | sup | tt | xref)*
     }

   tt =
     element tt {
       (text
        | bcp14
        | cref
        | em
        | eref
        | iref
        | relref
        | strong
        | sub
        | sup
        | xref)*
     }

   strong =
     element strong {
       (text
        | bcp14
        | cref
        | em
        | eref
        | iref
        | relref
        | sub
        | sup
        | tt
        | xref)*
     }

   em =
     element em {
       (text
        | bcp14
        | cref
        | eref
        | iref
        | relref
        | strong
        | sub
        | sup
        | tt
        | xref)*
     }

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   sub =
     element sub {
       (text
        | bcp14
        | cref
        | em
        | eref
        | iref
        | relref
        | strong
        | tt
        | xref)*
     }

   sup =
     element sup {
       (text
        | bcp14
        | cref
        | em
        | eref
        | iref
        | relref
        | strong
        | tt
        | xref)*
     }

   spanx =
     element spanx {
       [ a:defaultValue = "preserve" ]
       attribute xml:space { "default" | "preserve" }?,
       [ a:defaultValue = "emph" ] attribute style { text }?,
       text
     }

   vspace =
     element vspace {
       [ a:defaultValue = "0" ] attribute blankLines { text }?,
       empty
     }

   figure =
     element figure {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       [ a:defaultValue = "" ] attribute title { text }?,
       [ a:defaultValue = "false" ]

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       attribute suppress-title { "true" | "false" }?,
       attribute src { text }?,
       [ a:defaultValue = "left" ]
       attribute align { "left" | "center" | "right" }?,
       [ a:defaultValue = "" ] attribute alt { text }?,
       [ a:defaultValue = "" ] attribute width { text }?,
       [ a:defaultValue = "" ] attribute height { text }?,
       name?,
       iref*,
       preamble?,
       (artwork | sourcecode)+,
       postamble?
     }

   table =
     element table {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       name?,
       iref*,
       thead?,
       tbody+,
       tfoot?
     }

   preamble =
     element preamble {
       (text
        | bcp14
        | cref
        | em
        | eref
        | iref
        | relref
        | spanx
        | strong
        | sub
        | sup
        | tt
        | xref)*
     }

   artwork =
     element artwork {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       attribute xml:space { text }?,
       [ a:defaultValue = "" ] attribute name { text }?,

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       [ a:defaultValue = "" ] attribute type { text }?,
       attribute src { text }?,
       [ a:defaultValue = "left" ]
       attribute align { "left" | "center" | "right" }?,
       [ a:defaultValue = "" ] attribute alt { text }?,
       [ a:defaultValue = "" ] attribute width { text }?,
       [ a:defaultValue = "" ] attribute height { text }?,
       (text* | svg)
     }

   svg =
     element ns1:svg {
       attribute * { text }*,
       anything
     }

   anything =
     element * {
       attribute * { text }*,
       anything*
     }

   sourcecode =
     element sourcecode {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       [ a:defaultValue = "" ] attribute name { text }?,
       [ a:defaultValue = "" ] attribute type { text }?,
       attribute src { text }?,
       text
     }

   thead =
     element thead {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       tr+
     }

   tbody =
     element tbody {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       tr+
     }

   tfoot =
     element tfoot {

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       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       tr+
     }

   tr =
     element tr {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       [ a:defaultValue = "0" ] attribute border { text }?,
       (td | th)+
     }

   td =
     element td {
       attribute anchor { xsd:ID }?,
       [ a:defaultValue = "0" ] attribute border { text }?,
       [ a:defaultValue = "0" ] attribute colspan { text }?,
       [ a:defaultValue = "0" ] attribute rowspan { text }?,
       [ a:defaultValue = "left" ]
       attribute align { "left" | "center" | "right" }?,
       (t+
        | (text
           | artwork
           | bcp14
           | br
           | cref
           | dl
           | em
           | eref
           | figure
           | iref
           | ol
           | relref
           | sourcecode
           | strong
           | sub
           | sup
           | tt
           | ul
           | xref)+)
     }

   th =
     element th {
       attribute anchor { xsd:ID }?,
       attribute pn { text }?,
       [ a:defaultValue = "0" ] attribute border { text }?,

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       [ a:defaultValue = "0" ] attribute colspan { text }?,
       [ a:defaultValue = "0" ] attribute rowspan { text }?,
       [ a:defaultValue = "left" ]
       attribute align { "left" | "center" | "right" }?,
       (t+
        | (text
           | artwork
           | bcp14
           | br
           | cref
           | dl
           | em
           | eref
           | figure
           | iref
           | ol
           | relref
           | sourcecode
           | strong
           | sub
           | sup
           | tt
           | ul
           | xref)+)
     }

   postamble =
     element postamble { (text | cref | eref | iref | spanx | xref)* }

   texttable =
     element texttable {
       attribute anchor { xsd:ID }?,
       [ a:defaultValue = "" ] attribute title { text }?,
       [ a:defaultValue = "false" ]
       attribute suppress-title { "true" | "false" }?,
       [ a:defaultValue = "center" ]
       attribute align { "left" | "center" | "right" }?,
       [ a:defaultValue = "full" ]
       attribute style { "all" | "none" | "headers" | "full" }?,
       name?,
       preamble?,
       ttcol+,
       c*,
       postamble?
     }

   ttcol =
     element ttcol {

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       attribute width { text }?,
       [ a:defaultValue = "left" ]
       attribute align { "left" | "center" | "right" }?,
       (cref | eref | iref | xref | text)*
     }

   c = element c { (text | cref | eref | iref | spanx | xref)* }

   bcp14 = element bcp14 { text }

   br = element br { empty }

   back = element back { displayreference*, references*, section* }

   displayreference =
     element displayreference {
       attribute target { xsd:IDREF },
       attribute to { text }
     }

   references =
     element references {
       attribute anchor { xsd:ID }?,
       attribute title { text }?,
       name?,
       (reference | referencegroup)*
     }

   reference =
     element reference {
       attribute anchor { xsd:ID },
       attribute target { text }?,
       [ a:defaultValue = "true" ]
       attribute quoteTitle { "true" | "false" }?,
       front,
       (annotation | format | refcontent | seriesInfo)*
     }

   referencegroup =
     element referencegroup {
       attribute anchor { xsd:ID },
       reference+
     }

   seriesInfo =
     element seriesInfo {
       attribute name { text },
       attribute value { text },

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       attribute asciiName { text }?,
       attribute asciiValue { text }?,
       empty
     }

   format =
     element format {
       attribute target { text }?,
       attribute type { text },
       attribute octets { text }?,
       empty
     }

   annotation =
     element annotation {
       (text
        | bcp14
        | cref
        | em
        | eref
        | iref
        | relref
        | spanx
        | strong
        | sub
        | sup
        | tt
        | xref)*
     }

   refcontent =
     element refcontent {
       (text | bcp14 | em | strong | sub | sup | tt)*
     }

   start = rfc

Appendix D.  Schema Differences from v2

   The following is a non-normative comparison of the v3 format to the
   v2 format.  A "-" indicates lines removed from the v2 schema, and a
   "+" indicates lines added to the v3 schema.

     namespace a =
     "http://relaxng.org/ns/compatibility/annotations/1.0"
   + namespace ns1 = "http://www.w3.org/2000/svg"

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   + # xml2rfc Version 3 grammar
     rfc =
       element rfc {
         attribute number { text }?,
         [ a:defaultValue = "" ] attribute obsoletes { text }?,
         [ a:defaultValue = "" ] attribute updates { text }?,
   -     attribute category { "std" | "bcp" | "info" | "exp" |
   - "historic" }?,
   -     attribute consensus { "no" | "yes" }?,
   +     attribute category { text }?,
   +     [ a:defaultValue = "false" ]
   +     attribute consensus { "no" | "yes" | "false" | "true" }?,
         attribute seriesNo { text }?,
         attribute ipr {
           "full2026"
           | "noDerivativeWorks2026"
           | "none"
           | "full3667"
           | "noModification3667"
           | "noDerivatives3667"
           | "full3978"
           | "noModification3978"
           | "noDerivatives3978"
           | "trust200811"
           | "noModificationTrust200811"
           | "noDerivativesTrust200811"
           | "trust200902"
           | "noModificationTrust200902"
           | "noDerivativesTrust200902"
           | "pre5378Trust200902"
         }?,
         attribute iprExtract { xsd:IDREF }?,
         [ a:defaultValue = "IETF" ]
         attribute submissionType {
           "IETF" | "IAB" | "IRTF" | "independent"
         }?,
         attribute docName { text }?,
   -     [ a:defaultValue = "en" ] attribute xml:lang { text }?,
   +     [ a:defaultValue = "false" ]
   +     attribute sortRefs { "true" | "false" }?,
   +     [ a:defaultValue = "true" ]
   +     attribute symRefs { "true" | "false" }?,
   +     [ a:defaultValue = "true" ]
   +     attribute tocInclude { "true" | "false" }?,
   +     [ a:defaultValue = "3" ] attribute tocDepth { text }?,
   +     attribute prepTime { text }?,
   +     [ a:defaultValue = "true" ]
   +     attribute indexInclude { "true" | "false" }?,

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   +     attribute version { text }?,
   +     [ a:defaultValue = "Common,Latin" ] attribute scripts { text
   + }?,
   +     attribute expiresDate { text }?,
   +     link*,
         front,
         middle,
         back?
       }
   + link =
   +   element link {
   +     attribute href { text },
   +     attribute rel { text }?
   +   }
     front =
       element front {
   -     title, author+, date, area*, workgroup*, keyword*, abstract?,
   - note*
   +     title,
   +     author+,
   +     date?,
   +     area*,
   +     workgroup*,
   +     keyword*,
   +     abstract?,
   +     seriesInfo*,
   +     note*,
   +     boilerplate?
       }
     title =
       element title {
         attribute abbrev { text }?,
   +     attribute ascii { text }?,
         text
       }
     author =
       element author {
         attribute initials { text }?,
   +     attribute asciiInitials { text }?,
         attribute surname { text }?,
   +     attribute asciiSurname { text }?,
         attribute fullname { text }?,
         attribute role { "editor" }?,
   +     attribute asciiFullname { text }?,
         organization?,
         address?
       }
     organization =

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       element organization {
         attribute abbrev { text }?,
   +     attribute ascii { text }?,
   +     text
   +   }
   + address =
   +   element address { postal?, phone?, facsimile?, email?, uri? }
   + postal =
   +   element postal {
   +     (city | code | country | region | street)* | postalLine+
   +   }
   + street =
   +   element street {
   +     attribute ascii { text }?,
   +     text
   +   }
   + city =
   +   element city {
   +     attribute ascii { text }?,
   +     text
   +   }
   + region =
   +   element region {
   +     attribute ascii { text }?,
   +     text
   +   }
   + code =
   +   element code {
   +     attribute ascii { text }?,
   +     text
   +   }
   + country =
   +   element country {
   +     attribute ascii { text }?,
   +     text
   +   }
   + postalLine =
   +   element postalLine {
   +     attribute ascii { text }?,
         text
       }
   - address = element address { postal?, phone?, facsimile?, email?,
   - uri? }
   - postal = element postal { street+, (city | region | code |
   - country)* }
   - street = element street { text }
   - city = element city { text }
   - region = element region { text }

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   - code = element code { text }
   - country = element country { text }
     phone = element phone { text }
     facsimile = element facsimile { text }
   - email = element email { text }
   + email =
   +   element email {
   +     attribute ascii { text }?,
   +     text
   +   }
     uri = element uri { text }
     date =
       element date {
         attribute day { text }?,
         attribute month { text }?,
         attribute year { text }?,
         empty
       }
     area = element area { text }
     workgroup = element workgroup { text }
     keyword = element keyword { text }
   - abstract = element abstract { t+ }
   + abstract =
   +   element abstract {
   +     attribute anchor { xsd:ID }?,
   +     (dl | ol | t | ul)+
   +   }
     note =
       element note {
   -     attribute title { text },
   -     t+
   +     attribute title { text }?,
   +     name,
   +     attribute pn { text }?,
   +     [ a:defaultValue = "false" ]
   +     attribute removeInRFC { "true" | "false" }?,
   +     (dl | ol | t | ul)+
   +   }
   + boilerplate =
   +   element boilerplate {
   +     attribute pn { text }?,
   +     section+
       }
     middle = element middle { section+ }
     section =
       element section {
         attribute anchor { xsd:ID }?,
   -     attribute title { text },

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   +     attribute pn { text }?,
   +     attribute title { text }?,
   +     [ a:defaultValue = "true" ]
   +     attribute numbered { "true" | "false" }?,
         [ a:defaultValue = "default" ]
         attribute toc { "include" | "exclude" | "default" }?,
   -     (t | figure | texttable | iref)*,
   +     [ a:defaultValue = "false" ]
   +     attribute removeInRFC { "true" | "false" }?,
   +     name?,
   +     (artwork
   +      | aside
   +      | blockquote
   +      | dl
   +      | figure
   +      | iref
   +      | ol
   +      | sourcecode
   +      | t
   +      | table
   +      | texttable
   +      | ul)*,
         section*
       }
   + name =
   +   element name {
   +     attribute slugifiedName { text }?,
   +     (text | cref | eref | relref | tt | xref)*
   +   }
     t =
       element t {
         attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
         attribute hangText { text }?,
   +     [ a:defaultValue = "false" ]
   +     attribute keepWithNext { "false" | "true" }?,
   +     [ a:defaultValue = "false" ]
   +     attribute keepWithPrevious { "false" | "true" }?,
         (text
   -      | \list
   -      | figure
   -      | xref
   +      | bcp14
   +      | cref
   +      | em
          | eref
          | iref
   -      | cref

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   +      | \list
   +      | relref
          | spanx
   -      | vspace)*
   +      | strong
   +      | sub
   +      | sup
   +      | tt
   +      | vspace
   +      | xref)*
   +   }
   + aside =
   +   element aside {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     (artwork | dl | figure | iref | \list | ol | t | table | ul)*
   +   }
   + blockquote =
   +   element blockquote {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     attribute cite { text }?,
   +     attribute quotedFrom { text }?,
   +     ((artwork | dl | figure | ol | sourcecode | t | ul)+
   +      | (text
   +         | bcp14
   +         | cref
   +         | em
   +         | eref
   +         | iref
   +         | relref
   +         | strong
   +         | sub
   +         | sup
   +         | tt
   +         | xref)+)
       }
     \list =
       element list {
   -     attribute style { text }?,
   +     [ a:defaultValue = "empty" ] attribute style { text }?,
         attribute hangIndent { text }?,
         attribute counter { text }?,
         t+
       }
   + ol =
   +   element ol {
   +     attribute anchor { xsd:ID }?,

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   +     attribute pn { text }?,
   +     [ a:defaultValue = "1" ] attribute type { text }?,
   +     [ a:defaultValue = "1" ] attribute start { text }?,
   +     attribute group { text }?,
   +     [ a:defaultValue = "normal" ]
   +     attribute spacing { "normal" | "compact" }?,
   +     li+
   +   }
   + ul =
   +   element ul {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     [ a:defaultValue = "normal" ]
   +     attribute spacing { "normal" | "compact" }?,
   +     [ a:defaultValue = "false" ]
   +     attribute empty { "false" | "true" }?,
   +     li+
   +   }
   + li =
   +   element li {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     ((artwork | dl | figure | ol | sourcecode | t | ul)+
   +      | (text
   +         | bcp14
   +         | cref
   +         | em
   +         | eref
   +         | iref
   +         | relref
   +         | strong
   +         | sub
   +         | sup
   +         | tt
   +         | xref)+)
   +   }
   + dl =
   +   element dl {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     [ a:defaultValue = "normal" ]
   +     attribute spacing { "normal" | "compact" }?,
   +     [ a:defaultValue = "true" ]
   +     attribute hanging { "false" | "true" }?,
   +     (dt, dd)+
   +   }
   + dt =
   +   element dt {

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   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     (text
   +      | bcp14
   +      | cref
   +      | em
   +      | eref
   +      | iref
   +      | relref
   +      | strong
   +      | sub
   +      | sup
   +      | tt
   +      | xref)*
   +   }
   + dd =
   +   element dd {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     ((artwork | dl | figure | ol | sourcecode | t | ul)+
   +      | (text
   +         | bcp14
   +         | cref
   +         | em
   +         | eref
   +         | iref
   +         | relref
   +         | strong
   +         | sub
   +         | sup
   +         | tt
   +         | xref)+)
   +   }
     xref =
       element xref {
         attribute target { xsd:IDREF },
   -     [ a:defaultValue = "false" ] attribute pageno { "true" |
   - "false" }?,
   +     [ a:defaultValue = "false" ]
   +     attribute pageno { "true" | "false" }?,
         [ a:defaultValue = "default" ]
   -     attribute format { "counter" | "title" | "none" | "default"
   +     attribute format { "default" | "title" | "counter" | "none"
     }?,
   +     attribute derivedContent { text }?,
   +     text
   +   }
   + relref =

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   +   element relref {
   +     attribute target { xsd:IDREF },
   +     [ a:defaultValue = "of" ]
   +     attribute displayFormat { "of" | "comma" | "parens" }?,
   +     (attribute section { text },
   +      attribute relative { text }?)?,
   +     attribute derivedRemoteContent { text }?,
   +     attribute derivedLink { text }?,
         text
       }
     eref =
       element eref {
         attribute target { text },
         text
       }
     iref =
       element iref {
         attribute item { text },
         [ a:defaultValue = "" ] attribute subitem { text }?,
         [ a:defaultValue = "false" ]
         attribute primary { "true" | "false" }?,
   +     [ a:defaultValue = "" ] attribute irefid { text }?,
         empty
       }
     cref =
       element cref {
         attribute anchor { xsd:ID }?,
         attribute source { text }?,
   -     text
   +     [ a:defaultValue = "true" ]
   +     attribute display { "true" | "false" }?,
   +     (text | em | eref | relref | strong | sub | sup | tt | xref)*
   +   }
   + tt =
   +   element tt {
   +     (text
   +      | bcp14
   +      | cref
   +      | em
   +      | eref
   +      | iref
   +      | relref
   +      | strong
   +      | sub
   +      | sup
   +      | xref)*
   +   }
   + strong =

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   +   element strong {
   +     (text
   +      | bcp14
   +      | cref
   +      | em
   +      | eref
   +      | iref
   +      | relref
   +      | sub
   +      | sup
   +      | tt
   +      | xref)*
   +   }
   + em =
   +   element em {
   +     (text
   +      | bcp14
   +      | cref
   +      | eref
   +      | iref
   +      | relref
   +      | strong
   +      | sub
   +      | sup
   +      | tt
   +      | xref)*
   +   }
   + sub =
   +   element sub {
   +     (text
   +      | bcp14
   +      | cref
   +      | em
   +      | eref
   +      | iref
   +      | relref
   +      | strong
   +      | tt
   +      | xref)*
   +   }
   + sup =
   +   element sup {
   +     (text
   +      | bcp14
   +      | cref
   +      | em
   +      | eref
   +      | iref

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   +      | relref
   +      | strong
   +      | tt
   +      | xref)*
       }
     spanx =
       element spanx {
         [ a:defaultValue = "preserve" ]
         attribute xml:space { "default" | "preserve" }?,
         [ a:defaultValue = "emph" ] attribute style { text }?,
         text
       }
     vspace =
       element vspace {
         [ a:defaultValue = "0" ] attribute blankLines { text }?,
         empty
       }
     figure =
       element figure {
         attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
         [ a:defaultValue = "" ] attribute title { text }?,
         [ a:defaultValue = "false" ]
         attribute suppress-title { "true" | "false" }?,
         attribute src { text }?,
         [ a:defaultValue = "left" ]
         attribute align { "left" | "center" | "right" }?,
         [ a:defaultValue = "" ] attribute alt { text }?,
         [ a:defaultValue = "" ] attribute width { text }?,
         [ a:defaultValue = "" ] attribute height { text }?,
   +     name?,
         iref*,
         preamble?,
   -     artwork,
   +     (artwork | sourcecode)+,
         postamble?
       }
   + table =
   +   element table {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     name?,
   +     iref*,
   +     thead?,
   +     tbody+,
   +     tfoot?
   +   }
     preamble =

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   -   element preamble { (text | xref | eref | iref | cref | spanx)* }
   +   element preamble {
   +     (text
   +      | bcp14
   +      | cref
   +      | em
   +      | eref
   +      | iref
   +      | relref
   +      | spanx
   +      | strong
   +      | sub
   +      | sup
   +      | tt
   +      | xref)*
   +   }
     artwork =
       element artwork {
   -     [ a:defaultValue = "preserve" ]
   -     attribute xml:space { "default" | "preserve" }?,
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     attribute xml:space { text }?,
         [ a:defaultValue = "" ] attribute name { text }?,
         [ a:defaultValue = "" ] attribute type { text }?,
         attribute src { text }?,
         [ a:defaultValue = "left" ]
         attribute align { "left" | "center" | "right" }?,
         [ a:defaultValue = "" ] attribute alt { text }?,
         [ a:defaultValue = "" ] attribute width { text }?,
         [ a:defaultValue = "" ] attribute height { text }?,
   -     text*
   +     (text* | svg)
   +   }
   + svg =
   +   element ns1:svg {
   +     attribute * { text }*,
   +     anything
   +   }
   + anything =
   +   element * {
   +     attribute * { text }*,
   +     anything*
   +   }
   + sourcecode =
   +   element sourcecode {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,

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   +     [ a:defaultValue = "" ] attribute name { text }?,
   +     [ a:defaultValue = "" ] attribute type { text }?,
   +     attribute src { text }?,
   +     text
   +   }
   + thead =
   +   element thead {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     tr+
   +   }
   + tbody =
   +   element tbody {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     tr+
   +   }
   + tfoot =
   +   element tfoot {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     tr+
   +   }
   + tr =
   +   element tr {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     [ a:defaultValue = "0" ] attribute border { text }?,
   +     (td | th)+
   +   }
   + td =
   +   element td {
   +     attribute anchor { xsd:ID }?,
   +     [ a:defaultValue = "0" ] attribute border { text }?,
   +     [ a:defaultValue = "0" ] attribute colspan { text }?,
   +     [ a:defaultValue = "0" ] attribute rowspan { text }?,
   +     [ a:defaultValue = "left" ]
   +     attribute align { "left" | "center" | "right" }?,
   +     (t+
   +      | (text
   +         | artwork
   +         | bcp14
   +         | br
   +         | cref
   +         | dl
   +         | em
   +         | eref
   +         | figure

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   +         | iref
   +         | ol
   +         | relref
   +         | sourcecode
   +         | strong
   +         | sub
   +         | sup
   +         | tt
   +         | ul
   +         | xref)+)
   +   }
   + th =
   +   element th {
   +     attribute anchor { xsd:ID }?,
   +     attribute pn { text }?,
   +     [ a:defaultValue = "0" ] attribute border { text }?,
   +     [ a:defaultValue = "0" ] attribute colspan { text }?,
   +     [ a:defaultValue = "0" ] attribute rowspan { text }?,
   +     [ a:defaultValue = "left" ]
   +     attribute align { "left" | "center" | "right" }?,
   +     (t+
   +      | (text
   +         | artwork
   +         | bcp14
   +         | br
   +         | cref
   +         | dl
   +         | em
   +         | eref
   +         | figure
   +         | iref
   +         | ol
   +         | relref
   +         | sourcecode
   +         | strong
   +         | sub
   +         | sup
   +         | tt
   +         | ul
   +         | xref)+)
       }
     postamble =
   -   element postamble { (text | xref | eref | iref | cref | spanx)*
   +   element postamble { (text | cref | eref | iref | spanx | xref)*
     }
     texttable =
       element texttable {
         attribute anchor { xsd:ID }?,

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         [ a:defaultValue = "" ] attribute title { text }?,
         [ a:defaultValue = "false" ]
         attribute suppress-title { "true" | "false" }?,
         [ a:defaultValue = "center" ]
         attribute align { "left" | "center" | "right" }?,
         [ a:defaultValue = "full" ]
         attribute style { "all" | "none" | "headers" | "full" }?,
   +     name?,
         preamble?,
         ttcol+,
         c*,
         postamble?
       }
     ttcol =
       element ttcol {
         attribute width { text }?,
         [ a:defaultValue = "left" ]
         attribute align { "left" | "center" | "right" }?,
   -     text
   +     (cref | eref | iref | xref | text)*
   +   }
   + c = element c { (text | cref | eref | iref | spanx | xref)* }
   + bcp14 = element bcp14 { text }
   + br = element br { empty }
   + back = element back { displayreference*, references*, section* }
   + displayreference =
   +   element displayreference {
   +     attribute target { xsd:IDREF },
   +     attribute to { text }
       }
   - c = element c { (text | xref | eref | iref | cref | spanx)* }
   - back = element back { references*, section* }
     references =
       element references {
   -     [ a:defaultValue = "References" ] attribute title { text }?,
   -     reference+
   +     attribute anchor { xsd:ID }?,
   +     attribute title { text }?,
   +     name?,
   +     (reference | referencegroup)*
       }
     reference =
       element reference {
         attribute anchor { xsd:ID },
         attribute target { text }?,
   +     [ a:defaultValue = "true" ]
   +     attribute quoteTitle { "true" | "false" }?,
         front,

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   -     seriesInfo*,
   -     format*,
   -     annotation*
   +     (annotation | format | refcontent | seriesInfo)*
   +   }
   + referencegroup =
   +   element referencegroup {
   +     attribute anchor { xsd:ID },
   +     reference+
       }
     seriesInfo =
       element seriesInfo {
         attribute name { text },
         attribute value { text },
   +     attribute asciiName { text }?,
   +     attribute asciiValue { text }?,
         empty
       }
     format =
       element format {
         attribute target { text }?,
         attribute type { text },
         attribute octets { text }?,
         empty
       }
     annotation =
   -   element annotation { (text | xref | eref | iref | cref |
   - spanx)* }
   +   element annotation {
   +     (text
   +      | bcp14
   +      | cref
   +      | em
   +      | eref
   +      | iref
   +      | relref
   +      | spanx
   +      | strong
   +      | sub
   +      | sup
   +      | tt
   +      | xref)*
   +   }
   + refcontent =
   +   element refcontent {
   +     (text | bcp14 | em | strong | sub | sup | tt)*
   +   }
     start = rfc

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Index

   A
      abbrev attribute
         in organization element  41
         in title element  72
      abstract element  10, 98
         anchor attribute  11
         inside front  33
      address element  11, 98
         inside author  17
      align attribute
         in artwork element  14
         in figure element  31
         in td element  68
         in texttable element  82
         in th element  70
         in ttcol element  83
      alt attribute
         in artwork element  14
         in figure element  32
      anchor attribute
         in abstract element  11
         in artwork element  14
         in aside element  16
         in blockquote element  20
         in cref element  23
         in dd element  25
         in dl element  27
         in dt element  28
         in figure element  32
         in li element  36
         in ol element  39
         in reference element  44
         in referencegroup element  45
         in references element  46
         in section element  55
         in sourcecode element  59
         in t element  64
         in table element  66
         in tbody element  66
         in td element  68
         in texttable element  82
         in tfoot element  69
         in th element  70
         in thead element  71
         in tr element  72
         in ul element  74

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      annotation element  11, 98
         inside reference  44
      anything element  98
      application/rfc+xml Media Type  85
      area element  12, 98
         inside front  33
      artwork element  12, 98
         align attribute  14
         alt attribute  14
         anchor attribute  14
         height attribute  14
         inside aside  16
         inside blockquote  19
         inside dd  24
         inside figure  31
         inside li  35
         inside section  54
         inside td  67
         inside th  69
         name attribute  14
         pn attribute  15
         src attribute  15
         type attribute  15
         width attribute  16
         xml:space attribute  16
      ascii attribute
         in city element  21
         in code element  21
         in country element  22
         in email element  29
         in organization element  41
         in postalLine element  43
         in region element  46
         in street element  61
         in title element  72
      asciiFullname attribute
         in author element  17
      asciiInitials attribute
         in author element  17
      asciiName attribute
         in seriesInfo element  57
      asciiSurname attribute
         in author element  17
      asciiValue attribute
         in seriesInfo element  57
      aside element  16, 98
         anchor attribute  16
         inside section  54

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         pn attribute  16
      Attributes
         abbrev  41, 72
         align  14, 31, 68, 70, 82-83
         alt  14, 32
         anchor  11, 14, 16, 20, 23, 25, 27-28, 32, 36, 39, 44-46, 55,
            59, 64, 66, 68-72, 74, 82
         ascii  21-22, 29, 41, 43, 46, 61, 72
         asciiFullname  17
         asciiInitials  17
         asciiName  57
         asciiSurname  17
         asciiValue  57
         blankLines  84
         border  68, 70, 72
         category  50
         cite  20
         colspan  68, 71
         consensus  50
         counter  79
         day  24
         derivedContent  75
         derivedLink  47
         derivedRemoteContent  47
         display  23
         displayFormat  48
         docName  51
         empty  74
         expiresDate  51
         format  76
         fullname  17
         group  39
         hangIndent  79
         hanging  27
         hangText  64
         height  14, 32
         href  37
         indexInclude  51
         initials  18
         ipr  51
         iprExtract  52
         irefid  34
         item  34
         keepWithNext  64
         keepWithPrevious  65
         month  24
         name  14, 57, 59
         number  52

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         numbered  55
         obsoletes  52
         octets  79
         pageno  77
         pn  15-16, 20-21, 26-28, 32, 36, 39-40, 55, 59, 65-66, 69,
            71-72, 74
         prepTime  52
         primary  34
         quotedFrom  20
         quoteTitle  44
         rel  37
         relative  49
         removeInRFC  39, 56
         role  18
         rowspan  68, 71
         scripts  52
         section  49
         seriesNo  53
         slugifiedName  38
         sortRefs  53
         source  23
         spacing  27, 40, 74
         src  15, 32, 60
         start  40
         style  80-82
         subitem  34
         submissionType  53
         suppress-title  32, 83
         surname  18
         symRefs  53
         target  26, 31, 44, 50, 77, 79
         title  32, 39, 46, 56, 83
         to  26
         toc  56
         tocDepth  53
         tocInclude  54
         type  15, 40, 60, 79
         updates  54
         value  58
         version  54
         width  16, 32, 84
         xml:space  16, 81
         year  24
      author element  17, 98
         asciiFullname attribute  17
         asciiInitials attribute  17
         asciiSurname attribute  17
         fullname attribute  17

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         initials attribute  18
         inside front  33
         role attribute  18
         surname attribute  18

   B
      back element  18, 98
         inside rfc  50
      bcp14 element  18, 98
         inside annotation  12
         inside blockquote  19
         inside c  78
         inside dd  25
         inside dt  28
         inside em  29
         inside li  35
         inside postamble  80
         inside preamble  81
         inside refcontent  43
         inside strong  61
         inside sub  62
         inside sup  63
         inside t  64
         inside td  67
         inside th  69
         inside tt  73
      blankLines attribute
         in vspace element  84
      blockquote element  19, 98
         anchor attribute  20
         cite attribute  20
         inside section  55
         pn attribute  20
         quotedFrom attribute  20
      boilerplate element  20, 98
         inside front  33
         pn attribute  21
      border attribute
         in td element  68
         in th element  70
         in tr element  72
      br element  21, 98
         inside td  67
         inside th  69

   C
      c element  78, 98
         inside texttable  82

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      category attribute
         in rfc element  50
      cite attribute
         in blockquote element  20
      city element  21, 98
         ascii attribute  21
         inside postal  42
      code element  21, 98
         ascii attribute  21
         inside postal  42
      colspan attribute
         in td element  68
         in th element  71
      consensus attribute
         in rfc element  50
      counter attribute
         in list element  79
      country element  22, 98
         ascii attribute  22
         inside postal  42
      cref element  22, 98
         anchor attribute  23
         display attribute  23
         inside annotation  12
         inside blockquote  19
         inside c  78
         inside dd  25
         inside dt  28
         inside em  29
         inside li  36
         inside name  38
         inside postamble  80
         inside preamble  81
         inside strong  61
         inside sub  62
         inside sup  63
         inside t  64
         inside td  67
         inside th  69
         inside tt  73
         inside ttcol  83
         source attribute  23

   D
      date element  23, 98
         day attribute  24
         inside front  33
         month attribute  24

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         year attribute  24
      day attribute
         in date element  24
      dd element  24, 98
         anchor attribute  25
         inside dl  27
         pn attribute  26
      derivedContent attribute
         in xref element  75
      derivedLink attribute
         in relref element  47
      derivedRemoteContent attribute
         in relref element  47
      display attribute
         in cref element  23
      displayFormat attribute
         in relref element  48
      displayreference element  26, 98
         inside back  18
         target attribute  26
         to attribute  26
      dl element  26, 98
         anchor attribute  27
         hanging attribute  27
         inside abstract  11
         inside aside  16
         inside blockquote  19
         inside dd  25
         inside li  35
         inside note  38
         inside section  55
         inside td  67
         inside th  69
         pn attribute  27
         spacing attribute  27
      docName attribute
         in rfc element  51
      dt element  27, 98
         anchor attribute  28
         inside dl  27
         pn attribute  28

   E
      Elements
         abstract  10, 33
         address  11, 17
         annotation  11, 44
         area  12, 33

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         artwork  12, 16, 19, 24, 31, 35, 54, 67, 69
         aside  16, 54
         author  17, 33
         back  18, 50
         bcp14  12, 18-19, 25, 28-29, 35, 43, 61-64, 67, 69, 73, 78,
            80-81
         blockquote  19, 55
         boilerplate  20, 33
         br  21, 67, 69
         c  78, 82
         city  21, 42
         code  21, 42
         country  22, 42
         cref  12, 19, 22, 25, 28-29, 36, 38, 61-64, 67, 69, 73, 78,
            80-81, 83
         date  23, 33
         dd  24, 27
         displayreference  18, 26
         dl  11, 16, 19, 25-26, 35, 38, 55, 67, 69
         dt  27
         em  12, 20, 22, 25, 28, 36, 43, 61-64, 67, 69, 73, 78, 80-81
         email  11, 29
         eref  12, 20, 22, 25, 28-30, 36, 38, 61-64, 67, 69, 73, 78,
            80-81, 83
         facsimile  11, 78
         figure  16, 19, 25, 31, 35, 55, 67, 69
         format  44, 79
         front  32, 44, 50
         iref  12, 16, 20, 25, 28-29, 31, 33, 36, 55, 61-64, 66-67, 70,
            73, 78, 80-81, 83
         keyword  33-34
         li  35, 39, 73
         link  36, 50
         list  16, 64, 79
         middle  37, 50
         name  31, 37-38, 45, 54, 66, 82
         note  33, 38
         ol  11, 16, 19, 25, 35, 38-39, 55, 67, 70
         organization  17, 41
         phone  11, 41
         postal  11, 42
         postalLine  42
         postamble  31, 80, 82
         preamble  31, 80, 82
         refcontent  43-44
         reference  44-46
         referencegroup  45-46
         references  18, 45

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         region  42, 46
         relref  12, 20, 22, 25, 28-29, 36, 38, 46, 61-64, 67, 70, 73
         rfc  50
         section  18, 21, 37, 54-55
         seriesInfo  33, 44, 56
         sourcecode  19, 25, 31, 35, 55, 58, 67, 70
         spanx  12, 64, 78, 80-81
         street  42, 61
         strong  12, 20, 22, 25, 28-29, 36, 43, 61-64, 67, 70, 73, 78,
            80-81
         sub  12, 20, 22, 25, 28-29, 36, 43, 62, 64, 67, 70, 73, 78,
            80-81
         sup  12, 20, 22, 25, 28-29, 36, 43, 62-64, 67, 70, 73, 78,
            80-81
         svg  14, 77
         t  11, 16, 19, 25, 35, 38, 55, 63, 67, 69, 79
         table  16, 55, 65
         tbody  66
         td  66, 72
         texttable  55, 82
         tfoot  66, 68
         th  69, 72
         thead  66, 71
         title  33, 71
         tr  66, 68, 71-72
         tt  12, 20, 23, 25, 28-29, 36, 38, 43, 62-64, 67, 70, 72, 78,
            80-81
         ttcol  82-83
         ul  11, 16, 19, 25, 35, 38, 55, 67, 70, 73
         uri  11, 74
         vspace  64, 84
         workgroup  33, 74
         xref  12, 20, 23, 25, 28-29, 36, 38, 62-64, 68, 70, 73, 75, 78,
            80-81, 83
      em element  28, 98
         inside annotation  12
         inside blockquote  20
         inside c  78
         inside cref  22
         inside dd  25
         inside dt  28
         inside li  36
         inside postamble  80
         inside preamble  81
         inside refcontent  43
         inside strong  61
         inside sub  62
         inside sup  63

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         inside t  64
         inside td  67
         inside th  69
         inside tt  73
      email element  29, 98
         ascii attribute  29
         inside address  11
      empty attribute
         in ul element  74
      eref element  30, 98
         inside annotation  12
         inside blockquote  20
         inside c  78
         inside cref  22
         inside dd  25
         inside dt  28
         inside em  29
         inside li  36
         inside name  38
         inside postamble  80
         inside preamble  81
         inside strong  61
         inside sub  62
         inside sup  63
         inside t  64
         inside td  67
         inside th  69
         inside tt  73
         inside ttcol  83
         target attribute  31
      expiresDate attribute
         in rfc element  51

   F
      facsimile element  78, 98
         inside address  11
      figure element  31, 98
         align attribute  31
         alt attribute  32
         anchor attribute  32
         height attribute  32
         inside aside  16
         inside blockquote  19
         inside dd  25
         inside li  35
         inside section  55
         inside td  67
         inside th  69

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         pn attribute  32
         src attribute  32
         suppress-title attribute  32
         title attribute  32
         width attribute  32
      format attribute
         in xref element  76
      format element  79, 98
         inside reference  44
         octets attribute  79
         target attribute  79
         type attribute  79
      front element  32, 98
         inside reference  44
         inside rfc  50
      fullname attribute
         in author element  17

   G
      group attribute
         in ol element  39

   H
      hangIndent attribute
         in list element  79
      hanging attribute
         in dl element  27
      hangText attribute
         in t element  64
      height attribute
         in artwork element  14
         in figure element  32
      href attribute
         in link element  37

   I
      indexInclude attribute
         in rfc element  51
      initials attribute
         in author element  18
      ipr attribute
         '*2026'  93
         '*3667'  92
         '*3978'  92
         '*trust200811'  92
         '*trust200902'  91
         'noDerivativesTrust200902'  91
         'noModificationTrust200902'  91

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         'pre5378Trust200902'  92
         'trust200902'  91
         in rfc element  51
      iprExtract attribute
         in rfc element  52
      iref element  33, 98
         inside annotation  12
         inside aside  16
         inside blockquote  20
         inside c  78
         inside dd  25
         inside dt  28
         inside em  29
         inside figure  31
         inside li  36
         inside postamble  80
         inside preamble  81
         inside section  55
         inside strong  61
         inside sub  62
         inside sup  63
         inside t  64
         inside table  66
         inside td  67
         inside th  70
         inside tt  73
         inside ttcol  83
         irefid attribute  34
         item attribute  34
         primary attribute  34
         subitem attribute  34
      irefid attribute
         in iref element  34
      item attribute
         in iref element  34

   K
      keepWithNext attribute
         in t element  64
      keepWithPrevious attribute
         in t element  65
      keyword element  34, 98
         inside front  33

   L
      li element  35, 98
         anchor attribute  36
         inside ol  39

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         inside ul  73
         pn attribute  36
      link element  36, 98
         href attribute  37
         inside rfc  50
         rel attribute  37
      list element  79, 98
         counter attribute  79
         hangIndent attribute  79
         inside aside  16
         inside t  64
         style attribute  80

   M
      Media Type
         application/rfc+xml  85
      middle element  37, 98
         inside rfc  50
      month attribute
         in date element  24

   N
      name attribute
         in artwork element  14
         in seriesInfo element  57
         in sourcecode element  59
      name element  37, 98
         inside figure  31
         inside note  38
         inside references  45
         inside section  54
         inside table  66
         inside texttable  82
         slugifiedName attribute  38
      note element  38, 98
         inside front  33
         pn attribute  39
         removeInRFC attribute  39
         title attribute  39
      number attribute
         in rfc element  52
      numbered attribute
         in section element  55

   O
      obsoletes attribute
         in rfc element  52
      octets attribute

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         in format element  79
      ol element  39, 98
         anchor attribute  39
         group attribute  39
         inside abstract  11
         inside aside  16
         inside blockquote  19
         inside dd  25
         inside li  35
         inside note  38
         inside section  55
         inside td  67
         inside th  70
         pn attribute  40
         spacing attribute  40
         start attribute  40
         type attribute  40
      organization element  41, 98
         abbrev attribute  41
         ascii attribute  41
         inside author  17

   P
      pageno attribute
         in xref element  77
      phone element  41, 98
         inside address  11
      pn attribute
         in artwork element  15
         in aside element  16
         in blockquote element  20
         in boilerplate element  21
         in dd element  26
         in dl element  27
         in dt element  28
         in figure element  32
         in li element  36
         in note element  39
         in ol element  40
         in section element  55
         in sourcecode element  59
         in t element  65
         in table element  66
         in tbody element  66
         in tfoot element  69
         in th element  71
         in thead element  71
         in tr element  72

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         in ul element  74
      postal element  42, 98
         inside address  11
      postalLine element  42, 98
         ascii attribute  43
         inside postal  42
      postamble element  80, 98
         inside figure  31
         inside texttable  82
      preamble element  80, 98
         inside figure  31
         inside texttable  82
      prepTime attribute
         in rfc element  52
      primary attribute
         in iref element  34

   Q
      quotedFrom attribute
         in blockquote element  20
      quoteTitle attribute
         in reference element  44

   R
      refcontent element  43, 98
         inside reference  44
      reference element  44, 98
         anchor attribute  44
         inside referencegroup  45
         inside references  46
         quoteTitle attribute  44
         target attribute  44
      referencegroup element  45, 98
         anchor attribute  45
         inside references  46
      references element  45, 98
         anchor attribute  46
         inside back  18
         title attribute  46
      region element  46, 98
         ascii attribute  46
         inside postal  42
      rel attribute
         in link element  37
      relative attribute
         in relref element  49
      relref element  46, 98
         derivedLink attribute  47

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         derivedRemoteContent attribute  47
         displayFormat attribute  48
         inside annotation  12
         inside blockquote  20
         inside cref  22
         inside dd  25
         inside dt  28
         inside em  29
         inside li  36
         inside name  38
         inside strong  61
         inside sub  62
         inside sup  63
         inside t  64
         inside td  67
         inside th  70
         inside tt  73
         relative attribute  49
         section attribute  49
         target attribute  50
      removeInRFC attribute
         in note element  39
         in section element  56
      rfc element  50, 98
         category attribute  50
         consensus attribute  50
         docName attribute  51
         expiresDate attribute  51
         indexInclude attribute  51
         ipr attribute  51
         iprExtract attribute  52
         number attribute  52
         obsoletes attribute  52
         prepTime attribute  52
         scripts attribute  52
         seriesNo attribute  53
         sortRefs attribute  53
         submissionType attribute  53
         symRefs attribute  53
         tocDepth attribute  53
         tocInclude attribute  54
         updates attribute  54
         version attribute  54
      role attribute
         in author element  18
      rowspan attribute
         in td element  68
         in th element  71

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   S
      scripts attribute
         in rfc element  52
      section attribute
         in relref element  49
      section element  54, 98
         anchor attribute  55
         inside back  18
         inside boilerplate  21
         inside middle  37
         inside section  55
         numbered attribute  55
         pn attribute  55
         removeInRFC attribute  56
         title attribute  56
         toc attribute  56
      seriesInfo element  56, 98
         asciiName attribute  57
         asciiValue attribute  57
         inside front  33
         inside reference  44
         name attribute  57
         value attribute  58
      seriesNo attribute
         in rfc element  53
      slugifiedName attribute
         in name element  38
      sortRefs attribute
         in rfc element  53
      source attribute
         in cref element  23
      sourcecode element  58, 98
         anchor attribute  59
         inside blockquote  19
         inside dd  25
         inside figure  31
         inside li  35
         inside section  55
         inside td  67
         inside th  70
         name attribute  59
         pn attribute  59
         src attribute  60
         type attribute  60
      spacing attribute
         in dl element  27
         in ol element  40
         in ul element  74

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      spanx element  81, 98
         inside annotation  12
         inside c  78
         inside postamble  80
         inside preamble  81
         inside t  64
         style attribute  81
         xml:space attribute  81
      src attribute
         in artwork element  15
         in figure element  32
         in sourcecode element  60
      start attribute
         in ol element  40
      street element  61, 98
         ascii attribute  61
         inside postal  42
      strong element  61, 98
         inside annotation  12
         inside blockquote  20
         inside c  78
         inside cref  22
         inside dd  25
         inside dt  28
         inside em  29
         inside li  36
         inside postamble  80
         inside preamble  81
         inside refcontent  43
         inside sub  62
         inside sup  63
         inside t  64
         inside td  67
         inside th  70
         inside tt  73
      style attribute
         in list element  80
         in spanx element  81
         in texttable element  82
      sub element  62, 98
         inside annotation  12
         inside blockquote  20
         inside c  78
         inside cref  22
         inside dd  25
         inside dt  28
         inside em  29
         inside li  36

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         inside postamble  80
         inside preamble  81
         inside refcontent  43
         inside strong  62
         inside t  64
         inside td  67
         inside th  70
         inside tt  73
      subitem attribute
         in iref element  34
      submissionType attribute
         in rfc element  53
      sup element  63, 98
         inside annotation  12
         inside blockquote  20
         inside c  78
         inside cref  22
         inside dd  25
         inside dt  28
         inside em  29
         inside li  36
         inside postamble  80
         inside preamble  81
         inside refcontent  43
         inside strong  62
         inside t  64
         inside td  67
         inside th  70
         inside tt  73
      suppress-title attribute
         in figure element  32
         in texttable element  83
      surname attribute
         in author element  18
      svg element  77, 98
         inside artwork  14
      symRefs attribute
         in rfc element  53

   T
      t element  63, 98
         anchor attribute  64
         hangText attribute  64
         inside abstract  11
         inside aside  16
         inside blockquote  19
         inside dd  25
         inside li  35

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         inside list  79
         inside note  38
         inside section  55
         inside td  67
         inside th  69
         keepWithNext attribute  64
         keepWithPrevious attribute  65
         pn attribute  65
      table element  65, 98
         anchor attribute  66
         inside aside  16
         inside section  55
         pn attribute  66
      target attribute
         in displayreference element  26
         in eref element  31
         in format element  79
         in reference element  44
         in relref element  50
         in xref element  77
      tbody element  66, 98
         anchor attribute  66
         inside table  66
         pn attribute  66
      td element  66, 98
         align attribute  68
         anchor attribute  68
         border attribute  68
         colspan attribute  68
         inside tr  72
         rowspan attribute  68
      texttable element  82, 98
         align attribute  82
         anchor attribute  82
         inside section  55
         style attribute  82
         suppress-title attribute  83
         title attribute  83
      tfoot element  68, 98
         anchor attribute  69
         inside table  66
         pn attribute  69
      th element  69, 98
         align attribute  70
         anchor attribute  70
         border attribute  70
         colspan attribute  71
         inside tr  72

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         pn attribute  71
         rowspan attribute  71
      thead element  71, 98
         anchor attribute  71
         inside table  66
         pn attribute  71
      title attribute
         in figure element  32
         in note element  39
         in references element  46
         in section element  56
         in texttable element  83
      title element  71, 98
         abbrev attribute  72
         ascii attribute  72
         inside front  33
      to attribute
         in displayreference element  26
      toc attribute
         in section element  56
      tocDepth attribute
         in rfc element  53
      tocInclude attribute
         in rfc element  54
      tr element  72, 98
         anchor attribute  72
         border attribute  72
         inside tbody  66
         inside tfoot  68
         inside thead  71
         pn attribute  72
      tt element  72, 98
         inside annotation  12
         inside blockquote  20
         inside c  78
         inside cref  23
         inside dd  25
         inside dt  28
         inside em  29
         inside li  36
         inside name  38
         inside postamble  80
         inside preamble  81
         inside refcontent  43
         inside strong  62
         inside sub  62
         inside sup  63
         inside t  64

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         inside td  67
         inside th  70
      ttcol element  83, 98
         align attribute  83
         inside texttable  82
         width attribute  84
      type attribute
         in artwork element  15
         in format element  79
         in ol element  40
         in sourcecode element  60

   U
      ul element  73, 98
         anchor attribute  74
         empty attribute  74
         inside abstract  11
         inside aside  16
         inside blockquote  19
         inside dd  25
         inside li  35
         inside note  38
         inside section  55
         inside td  67
         inside th  70
         pn attribute  74
         spacing attribute  74
      updates attribute
         in rfc element  54
      uri element  74, 98
         inside address  11

   V
      value attribute
         in seriesInfo element  58
      version attribute
         in rfc element  54
      vspace element  84, 98
         blankLines attribute  84
         inside t  64

   W
      width attribute
         in artwork element  16
         in figure element  32
         in ttcol element  84
      workgroup element  74, 98
         inside front  33

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   X
      xml:space attribute
         in artwork element  16
         in spanx element  81
      xref element  75, 98
         derivedContent attribute  75
         format attribute  76
         inside annotation  12
         inside blockquote  20
         inside c  78
         inside cref  23
         inside dd  25
         inside dt  28
         inside em  29
         inside li  36
         inside name  38
         inside postamble  80
         inside preamble  81
         inside strong  62
         inside sub  62
         inside sup  63
         inside t  64
         inside td  68
         inside th  70
         inside tt  73
         inside ttcol  83
         pageno attribute  77
         target attribute  77
      xref formats
         counter  76
         default  76
         none  76
         title  76

   Y
      year attribute
         in date element  24

Author's Address

   Paul Hoffman
   VPN Consortium

   EMail: paul.hoffman@vpnc.org

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