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1<?xml version="1.0" encoding="utf-8"?>
2<?xml-stylesheet type='text/xsl' href='rfc2629.xslt' ?>
3
4<?rfc header="Documentation"?>
5<?rfc private="RFC2629 through XSLT"?>
6<?rfc toc="yes"?>
7<!-- <?rfc topblock="no"?>  -->
8<?rfc strict="yes"?>
9<?rfc symrefs="yes"?>
10<?rfc sortrefs="yes"?>
11<?rfc-ext allow-markup-in-artwork="yes" ?>
12<?rfc-ext include-references-in-index="yes" ?>
13
14<rfc xmlns:x="http://purl.org/net/xml2rfc/ext">
15        <front>
16        <title abbrev="RFC2629 through XSLT">Transforming RFC2629-formatted XML through XSLT</title>
17
18        <author initials="J. F." surname="Reschke" fullname="Julian F. Reschke">
19                <organization abbrev="greenbytes">greenbytes GmbH</organization>
20        <address>
21                <postal>
22                <street>Hafenweg 16</street>
23            <city>Muenster</city><region>NW</region><code>48155</code>
24                <country>Germany</country>
25                </postal>
26                  <phone>+49 251 2807760</phone>       
27                  <email>julian.reschke@greenbytes.de</email>   
28                  <uri>http://greenbytes.de/tech/webdav/</uri> 
29                </address>
30        </author>
31     
32    <date month="November" year="2009"/>
33
34    <keyword>RFC2629</keyword>
35    <keyword>xml2rfc</keyword>
36    <keyword>XSLT</keyword>
37    <keyword>hCard</keyword>
38    <keyword>XSL-FO</keyword>
39    <keyword>PDF</keyword>
40    <keyword>GRDDL</keyword>
41    <keyword>Dublin Core</keyword>
42        </front>
43
44        <middle>
45
46<section title="Introduction">
47<t>
48  This document describes a set of XSLT transformations that can be used to
49  transform RFC2629-compliant XML (see <xref target="RFC2629"/>) to various
50  output formats, such as HTML and PDF. The main topics are 
51  <list style="symbols">
52    <t>compliance to the xml2rfc XML element set (<xref target="supported.elements"/>),</t>
53    <t>support for xml2rfc processing instructions (<xref target="processing.instructions"/>),</t>
54    <t>the names of anchor elements generated in HTML and PDF output (<xref target="anchors"/>),</t>
55    <t>various XSLT engines that can be used (<xref target="xslt.engines"/>),</t>
56    <t>outputting HTML (<xref target="output.html"/>) and XHTML (<xref target="output.xhtml"/>),</t>
57    <t>outputting CHM (Compiled Microsoft Help, <xref target="output.chm"/>),</t>
58    <t>outputting PDF (<xref target="output.pdf"/>),</t>
59    <t>extensions to the xml2rfc vocabulary (<xref target="extensions"/>).</t>
60    <t>various utilities (<xref target="utilities"/>).</t>
61  </list>
62</t>
63<t>
64  The full distribution is available at <eref target="http://greenbytes.de/tech/webdav/rfc2629xslt.zip"/>.
65</t>
66</section>
67
68<section title="Supported RFC2629 elements" anchor="supported.elements">
69<t>
70  <spanx style="verb">rfc2629.xslt</spanx> supports both all RFC2629 grammar elements and the extensions
71  implemented in xml2rfc 1.33.
72</t>
73<section title="Extension elements">
74<t>
75  <spanx style="verb">rfc2629.xslt</spanx> supports two kind of extension
76  elements, using different XML namespaces.
77</t>
78<t>
79  The first set contains (hopefully) generally useful extensions, see
80  <xref target="extensions"/>.
81</t>
82<t>
83  The second set is used for change and issue tracking and currently is not
84  documented here. Please email the author in case
85  you're interested in using these extensions.
86</t>
87</section>
88</section>
89
90<section title="Processing Instructions" anchor="processing.instructions">
91<t>
92  All PIs can be set as XSLT parameter as well, overriding any value that
93  is found in the source file to be transformed.
94</t>
95<figure>
96<preamble>Using processing instructions:</preamble>
97<artwork type="example">
98&lt;?rfc toc="yes"?>
99&lt;?rfc-ext support-rfc2731="no"?>
100</artwork>
101</figure>
102<figure>
103<preamble>Using XSLT parameters (Saxon):</preamble>
104<artwork type="example">
105java -cp saxon.jar com.icl.saxon.StyleSheet source.xml rfc2629.xslt \
106  xml2rfc-toc=yes xml2rfc-ext-support-rfc2731=no > result.html
107</artwork></figure>
108<figure>
109<preamble>Using XSLT parameters (xsltproc):</preamble>
110<artwork type="example">
111xsltproc --param xml2rfc-toc '"yes"' \
112   --param xml2rfc-ext-support-rfc2731 '"no"' \
113   rfc2629.xslt source.xml > result.html
114</artwork>
115<postamble>(note the required quoting of string parameters)<iref item="xsltproc" subitem="passing parameters"/></postamble>
116</figure>
117
118<section title="Supported xml2rfc-compatible PIs">
119<texttable>
120  <ttcol>PI target</ttcol>
121  <ttcol>PI pseudo-attribute</ttcol>
122  <ttcol>XSLT parameter name</ttcol>
123  <ttcol>default</ttcol>
124  <ttcol>comment</ttcol>
125
126  <c>rfc</c>
127  <c>background<iref item="background PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="background"/></c>
128  <c>xml2rfc-background<iref item="xml2rfc-background parameter"/> <iref item="Parameters" subitem="xml2rfc-background"/></c>
129  <c>(not set)</c>
130  <c/>
131 
132  <c>rfc</c>
133  <c>compact<iref item="compact PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="compact"/></c>
134  <c>xml2rfc-compact<iref item="xml2rfc-editing parameter"/> <iref item="Parameters" subitem="xml2rfc-compact"/></c>
135  <c>"no"</c>
136  <c>only applies to HTML output method when printing</c>
137
138  <c>rfc</c>
139  <c>comments<iref item="comments PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="comments"/></c>
140  <c>xml2rfc-comments<iref item="xml2rfc-comments parameter"/> <iref item="Parameters" subitem="xml2rfc-comments"/></c>
141  <c>(not set)</c>
142  <c/>
143
144  <c>rfc</c>
145  <c>editing<iref item="editing PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="editing"/></c>
146  <c>xml2rfc-editing<iref item="xml2rfc-editing parameter"/> <iref item="Parameters" subitem="xml2rfc-editing"/></c>
147  <c>"no"</c>
148  <c/>
149 
150  <c>rfc</c>
151  <c>footer<iref item="footer PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="footer"/></c>
152  <c>xml2rfc-footer<iref item="xml2rfc-footer parameter"/> <iref item="Parameters" subitem="xml2rfc-footer"/></c>
153  <c>(not set)</c>
154  <c/>
155 
156  <c>rfc</c>
157  <c>header<iref item="header PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="header"/></c>
158  <c>xml2rfc-header<iref item="xml2rfc-header parameter"/> <iref item="Parameters" subitem="xml2rfc-header"/></c>
159  <c>(not set)</c>
160  <c/>
161
162  <c>rfc</c>
163  <c>inline<iref item="inline PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="inline"/></c>
164  <c>xml2rfc-inline<iref item="xml2rfc-inline parameter"/> <iref item="Parameters" subitem="xml2rfc-inline"/></c>
165  <c>(not set)</c>
166  <c/>
167
168  <c>rfc</c>
169  <c>iprnotified<iref item="iprnotified PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="iprnotified"/></c>
170  <c>xml2rfc-iprnotified<iref item="xml2rfc-iprnotified parameter"/> <iref item="Parameters" subitem="xml2rfc-iprnotified"/></c>
171  <c>"no"</c>
172  <c/>
173
174  <c>rfc</c>
175  <c>linkmailto<iref item="linkmailto PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="linkmailto"/></c>
176  <c>xml2rfc-linkmailto<iref item="xml2rfc-linkmailto parameter"/> <iref item="Parameters" subitem="xml2rfc-linkmailto"/></c>
177  <c>"yes"</c>
178  <c/>
179 
180  <c>rfc</c>
181  <c>private<iref item="private PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="private"/></c>
182  <c>xml2rfc-private<iref item="xml2rfc-private parameter"/> <iref item="Parameters" subitem="xml2rfc-private"/></c>
183  <c>(not set)</c>
184  <c/>
185 
186  <c>rfc</c>
187  <c>refparent<iref item="refparent PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="refparent"/></c>
188  <c>xml2rfc-private<iref item="xml2rfc-refparent parameter"/> <iref item="Parameters" subitem="xml2rfc-refparent"/></c>
189  <c>"References"</c>
190  <c>Title for References sections when automatically inserted</c>
191
192  <c>rfc</c>
193  <c>rfcedstyle<iref item="rfcedstyle PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="rfcedstyle"/></c>
194  <c>xml2rfc-rfcedstyle<iref item="xml2rfc-rfcedstyle parameter"/> <iref item="Parameters" subitem="xml2rfc-rfcedstyle"/></c>
195  <c>(not set)</c>
196  <c>(limited support)</c>
197
198  <c>rfc</c>
199  <c>sortrefs<iref item="sortrefs PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="sortrefs"/></c>
200  <c>xml2rfc-sortrefs<iref item="xml2rfc-sortrefs parameter"/> <iref item="Parameters" subitem="xml2rfc-sortrefs"/></c>
201  <c>"no"</c>
202  <c/>
203 
204  <c>rfc</c>
205  <c>symrefs<iref item="symrefs PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="symrefs"/></c>
206  <c>xml2rfc-symrefs<iref item="xml2rfc-symrefs parameter"/> <iref item="Parameters" subitem="xml2rfc-symrefs"/></c>
207  <c>"yes"</c>
208  <c>The default has changed from "no" to "yes" as of June 6, 2007 and xml2rfc 1.33pre4.</c>
209 
210  <c>rfc</c>
211  <c>toc<iref item="toc PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="toc"/></c>
212  <c>xml2rfc-toc<iref item="xml2rfc-toc parameter"/> <iref item="Parameters" subitem="xml2rfc-toc"/></c>
213  <c>"no"</c>
214  <c/>
215 
216  <c>rfc</c>
217  <c>tocdepth<iref item="tocdepth PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="tocdepth"/></c>
218  <c>xml2rfc-tocdepth<iref item="xml2rfc-tocdepth parameter"/> <iref item="Parameters" subitem="xml2rfc-tocdepth"/></c>
219  <c>99</c>
220  <c/>
221
222  <c>rfc</c>
223  <c>topblock<iref item="topblock PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="topblock"/></c>
224  <c>xml2rfc-topblock<iref item="xml2rfc-topblock parameter"/> <iref item="Parameters" subitem="xml2rfc-topblock"/></c>
225  <c>"yes"</c>
226  <c/>
227
228</texttable>
229</section>
230
231<section title="Unsupported xml2rfc-compatible PIs">
232<texttable>
233  <ttcol>PI target</ttcol>
234  <ttcol>PI pseudo-attribute</ttcol>
235  <ttcol>comment</ttcol>
236
237  <c>rfc</c>
238  <c>include<iref item="include PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="include"/></c>
239  <c>incompatible with XML/XSLT processing model, please use external entities instead</c>
240
241  <c>rfc</c>
242  <c>needLines<iref item="needLines PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="needLines"/></c>
243  <c/>
244
245  <c>rfc</c>
246  <c>slides<iref item="slides PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="slides"/></c>
247  <c/>
248
249  <c>rfc</c>
250  <c>strict<iref item="strict PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="strict"/></c>
251  <c/>
252
253  <c>rfc</c>
254  <c>subcompact<iref item="subcompact PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="subcompact"/></c>
255  <c/>
256
257  <c>rfc</c>
258  <c>tocindent<iref item="tocindent PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="tocindent"/></c>
259  <c>(defaults to "yes")</c>
260
261 <c>rfc</c>
262  <c>tocompact<iref item="tocompact PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="tocompact"/></c>
263  <c/>
264
265</texttable>
266</section>
267
268<section title="Extension PIs">
269<texttable>
270  <ttcol>PI target</ttcol>
271  <ttcol>PI pseudo-attribute</ttcol>
272  <ttcol>XSLT parameter name</ttcol>
273  <ttcol>default</ttcol>
274  <ttcol>description</ttcol>
275
276  <c>rfc-ext</c>
277  <c>allow-markup-in-artwork<iref item="allow-markup-in-artwork PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="allow-markup-in-artwork"/></c>
278  <c>xml2rfc-allow-markup-in-artwork<iref item="xml2rfc-ext-allow-markup-in-artwork parameter"/> <iref item="Parameters" subitem="xml2rfc-ext-allow-markup-in-artwork"/></c>
279  <c>"no"</c>
280  <c>Enables support for specific elements inside abstract elements (using this extension
281  makes the document incompatible to the RFC2629bis DTD; see description of
282  conversion XSLT in <xref target="clean-for-dtd"/>).</c>
283
284  <c>rfc-ext</c>
285  <c>authors-section<iref item="authors-section PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="authors-section"/></c>
286  <c>xml2rfc-ext-authors-section<iref item="xml2rfc-ext-authors-section parameter"/> <iref item="Parameters" subitem="xml2rfc-ext-authors-section"/></c>
287  <c></c>
288  <c>When "end", place the authors section at the end (just before the
289  copyright statements). This seems to be the preferred order in the
290  newest RFCs.</c>
291
292  <c>rfc-ext</c>
293  <c>duplex<iref item="duplex PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="duplex"/></c>
294  <c>xml2rfc-ext-duplex<iref item="xml2rfc-ext-duplex"/> <iref item="Parameters" subitem="xml2rfc-ext-duplex"/></c>
295  <c>no</c>
296  <c>When set to "yes", format the PDF output for doublesided printing.</c>
297
298  <c>rfc-ext</c>
299  <c>include-references-in-index<iref item="include-references-in-index PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="include-references-in-index"/></c>
300  <c>xml2rfc-ext-include-references-in-index<iref item="xml2rfc-ext-include-references-in-index parameter"/> <iref item="Parameters" subitem="xml2rfc-ext-include-references-in-index"/></c>
301  <c></c>
302  <c>When set to "yes", index entries are generated for all references.</c>
303
304  <c>rfc-ext</c>
305  <c>justification<iref item="justification PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="ijustification"/></c>
306  <c>xml2rfc-ext-justification<iref item="xml2rfc-ext-justification parameter"/> <iref item="Parameters" subitem="xml2rfc-ext-justification"/></c>
307  <c>"never"</c>
308  <c>"never": never emit justified text, "always": always emit justified text, "print": only emit justified text for print media.</c>
309
310  <c>rfc-ext</c>
311  <c>parse-xml-in-artwork<iref item="parse-xml-in-artwork PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="parse-xml-in-artwork"/></c>
312  <c>xml2rfc-parse-xml-in-artwork<iref item="xml2rfc-ext-parse-xml-in-artwork parameter"/> <iref item="Parameters" subitem="xml2rfc-ext-parse-xml-in-artwork"/></c>
313  <c>"no"</c>
314  <c>May be used to enable parsing of XML content in figures (MSXML only).</c>
315
316  <c>rfc-ext</c>
317  <c>support-rfc2731<iref item="support-rfc2731 PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="support-rfc2731"/></c>
318  <c>xml2rfc-ext-support-rfc2731<iref item="xml2rfc-ext-support-rfc2731 parameter"/> <iref item="Parameters" subitem="xml2rfc-ext-support-rfc2731"/></c>
319  <c>"yes"</c>
320  <c>Decides whether the HTML transformation should generate META tags according <xref target="rfc2731.properties"/>.</c>
321
322  <c>rfc-ext</c>
323  <c>sec-no-trailing-dots<iref item="sec-no-trailing-dots PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="sec-no-trailing-dots"/></c>
324  <c>xml2rfc-ext-sec-no-trailing-dots<iref item="xml2rfc-ext-sec-no-trailing-dots parameter"/> <iref item="Parameters" subitem="xml2rfc-ext-sec-no-trailing-dots"/></c>
325  <c></c>
326  <c>When set to "yes", add trailing dots to section numbers. This seems to be the preferred format in the
327  newest RFCs.</c>
328
329</texttable>
330</section>
331
332</section>
333
334<section title="Anchors" anchor="anchors">
335<t>
336  The transformation automatically generates anchors that are supposed to
337  be stable and predictable and that can be used to identify specific
338  parts of the document. Anchors are generated both in HTML and XSL-FO
339  content (but the latter will only be used for PDF output when the XSL-FO
340  engine supports producing PDF anchors).
341</t>
342<texttable>
343<preamble>The following anchors get auto-generated:</preamble>
344<ttcol>Anchor name</ttcol><ttcol>Description</ttcol>
345
346  <c>rfc.abstract <iref item="rfc.abstract anchor"/><iref item="Anchors" subitem="rfc.abstract"/></c><c>Abstract</c>
347  <c>rfc.authors <iref item="rfc.authors anchor"/><iref item="Anchors" subitem="rfc.authors"/></c><c>Authors section</c>
348  <c>rfc.copyright <iref item="rfc.copyright anchor"/><iref item="Anchors" subitem="rfc.copyright"/></c><c>Copyright section</c>
349  <c>rfc.copyrightnotice <iref item="rfc.copyrightnotice anchor"/><iref item="Anchors" subitem="rfc.copyrightnotice"/></c><c>Copyright notice</c>
350  <c>rfc.figure.<spanx>n</spanx> <iref item="rfc.figure.n anchor"/><iref item="Anchors" subitem="rfc.figure.n"/></c><c>Figures (titled)</c>
351  <c>rfc.figure.u.<spanx>n</spanx> <iref item="rfc.figure.u.n anchor"/><iref item="Anchors" subitem="rfc.figure.u.n"/></c><c>Figures (untitled)</c>
352  <c>rfc.index <iref item="rfc.index anchor"/><iref item="Anchors" subitem="rfc.index"/></c><c>Index</c>
353  <c>rfc.ipr <iref item="rfc.ipr anchor"/><iref item="Anchors" subitem="rfc.ipr"/></c><c>Intellectual Property</c>
354  <c>rfc.iref.<spanx>n</spanx> <iref item="rfc.iref.n anchor"/><iref item="Anchors" subitem="rfc.iref.n"/></c><c>Internal references</c>
355  <c>rfc.note.<spanx>n</spanx> <iref item="rfc.note.n anchor"/><iref item="Anchors" subitem="rfc.note.n"/></c><c>Notes (from front section)</c>
356  <c>rfc.references <iref item="rfc.references anchor"/><iref item="Anchors" subitem="rfc.references"/></c><c>References</c>
357  <c>rfc.references.<spanx>n</spanx> <iref item="rfc.references.n anchor"/><iref item="Anchors" subitem="rfc.references"/></c><c>Additional references</c>
358  <c>rfc.section.<spanx>n</spanx> <iref item="rfc.section.n anchor"/><iref item="Anchors" subitem="rfc.section.n"/></c><c>Section <spanx>n</spanx></c>
359  <c>rfc.section.<spanx>n</spanx>.p.<spanx>m</spanx> <iref item="rfc.section.n.p.m anchor"/><iref item="Anchors" subitem="rfc.section.n.p.m"/></c><c>Section <spanx>n</spanx>, paragraph <spanx>m</spanx></c>
360  <c>rfc.status <iref item="rfc.status anchor"/><iref item="Anchors" subitem="rfc.status"/></c><c>Status of memo</c>
361  <c>rfc.table.<spanx>n</spanx> <iref item="rfc.figure.n anchor"/><iref item="Anchors" subitem="rfc.figure.n"/></c><c>Tables (titled)</c>
362  <c>rfc.table.u.<spanx>n</spanx> <iref item="rfc.figure.u.n anchor"/><iref item="Anchors" subitem="rfc.figure.u.n"/></c><c>Tables (untitled)</c>
363  <c>rfc.toc <iref item="rfc.toc anchor"/><iref item="Anchors" subitem="rfc.toc"/></c><c>Table of contents</c>
364  <c>rfc.xref.<spanx>name</spanx>.<spanx>n</spanx> <iref item="rfc.xref.name.n anchor"/><iref item="Anchors" subitem="rfc.xref.name.n"/></c><c>References to reference <spanx>n</spanx> to <spanx>name</spanx></c>
365
366</texttable>
367</section>
368
369<section title="Supported XSLT engines" anchor="xslt.engines">
370<t>
371  The transformation requires a non-standard extension function (see <eref target="http://www.exslt.org/exsl/functions/node-set/exsl.node-set.html">
372  exsl:node-set</eref>)
373  which is however widely available. XSLT processors that do not support this
374  extension (or a functional equivalent) currently are not supported.
375</t>
376<section title="Standalone Engines">
377<t>
378  The following XSLT engines are believed to work well:
379  <list style="symbols">
380    <t>Windows: <iref item="MSXML3"/><iref item="MSXML4"/>MSXML3 and MSXML4 (<eref target="http://msdn.microsoft.com/xml"/>;
381      command line processor "msxsl" is available from <eref target="http://www.microsoft.com/downloads/details.aspx?FamilyID=2FB55371-C94E-4373-B0E9-DB4816552E41">Microsoft Download Center</eref>)</t>
382    <t>Java: <iref item="Saxon"/>Saxon (<eref target="http://saxon.sourceforge.net/"/>)</t>
383    <t>Java: <iref item="Xalan"/>Xalan (<eref target="http://xml.apache.org/xalan-j/"/>)</t>
384    <t>C/C++: <iref item="xsltproc"/>xsltproc (libxslt) (<eref target="http://xmlsoft.org/XSLT/"/>, make sure that you
385    have a current version)</t>
386  </list>
387</t>
388</section>
389
390<section title="In-Browser Engines" anchor="xslt.engines.browser">
391<t>
392  The following browsers seem to work fine:
393  <list style="symbols">
394    <x:lt>
395      <t><iref item="Internet Explorer 5.5"/>Internet Explorer 5.5 (Windows version, if MSXML3 is installed)</t>
396    </x:lt>
397    <x:lt>
398      <t><iref item="Internet Explorer 6"/><iref item="Internet Explorer 7"/><iref item="Internet Explorer 8"/>Internet Explorer 6 and newer</t>
399    </x:lt>
400    <x:lt>
401      <t anchor="firefox3"><iref item="Mozilla"/><iref item="Firefox" subitem="3.*"/>Firefox 3.0 and newer</t>
402      <t>
403        <list style="symbols">
404          <t>Be aware that XSLT execution can be suppressed using <iref item="NoScript"/><eref target="https://addons.mozilla.org/de/firefox/addon/722">NoScript</eref></t>
405          <t>Firefox does not load external DTDs nor external entities,
406          see <eref target="https://bugzilla.mozilla.org/show_bug.cgi?id=22942">Mozilla Bug 22942</eref>, thus entities
407          like &amp;nbsp; need to be declared in the internal subset (<xref target="examples.internalsubset"/>)</t>
408        </list>
409      </t>
410    </x:lt>
411    <x:lt>
412      <t><iref item="Safari"/><iref item="Safari" subitem="3.*"/>Safari 3 (starting with version 3.0.4)</t>
413    </x:lt>
414    <x:lt>
415      <t><iref item="Google Chrome"/>Google Chrome (beta available)</t>
416    </x:lt>
417    <x:lt>
418      <t><iref item="Opera"/>Opera 10 (beta version available)</t>
419    </x:lt>
420  </list>
421</t>
422<t>
423  The following browsers are known not to work properly:
424  <list style="symbols">
425    <x:lt>
426      <t anchor="firefox12"><iref item="Mozilla"/><iref item="Firefox" subitem="1.*/2.*"/>Firefox 1.*/2.*: (missing extension function - see change request at Mozilla BugZilla
427      <eref target="http://bugzilla.mozilla.org/show_bug.cgi?id=193678">193678</eref>)</t>
428    </x:lt>
429    <x:lt>
430      <t anchor="opera"><iref item="Opera"/>Opera 9.21: execution fails, potentially
431      to a somewhat complex XPath expression (reported to Opera as bug 245725).</t>
432    </x:lt>
433    <x:lt>
434      <t>Opera 9.5 and 9.6:
435      transformation appears to work, but CSS isn't getting applied (reported to Opera as bug 337388 on 2008-06-12).</t>
436    </x:lt>
437    <x:lt>
438      <t anchor="safari"><iref item="Safari"/>Safari 2.* supports client-side XSLT as of MacOS X 10.4,
439      but misses required extension functions. A problem
440      with stylesheets producing non-ASCII output (such as NBSP characters)
441      has been fixed as of OSX 10.4.4. Both
442      problems have been reported through Apple's bug tracking system, see
443      <eref target="http://drakken.dbc.mtview.ca.us/pipermail/xml2rfc/2005-May/002073.html"/> and
444      <eref target="http://bugs.webkit.org/show_bug.cgi?id=4079"/>.
445      </t>
446    </x:lt>
447  </list>
448</t>
449</section>
450
451</section>
452
453<section title="Transforming to HTML" anchor="output.html">
454<t>
455  Transformation to HTML can be done inside the browser if it supports
456  XSLT. To enable this, add the following processing instruction to
457  the start of the source file:
458</t>
459<iref item="xml-stylesheet PI"/>
460<figure><artwork type="example">
461  &lt;?xml-stylesheet type='text/xsl' href='rfc2629.xslt' ?>
462</artwork></figure>
463<t>
464  (and ensure that <spanx style="verb">rfc2629.xslt</spanx> is present).
465</t>
466
467<section title="HTML compliance">
468<t>
469  The transformation result is supposed to conform to the HTML 4.01 strict
470  DTD <xref target="HTML"/>. This can be checked using the W3C's online
471  validator at <eref target="http://validator.w3.org" /><iref item="HTML compliance"/>.
472</t>
473</section>
474
475<section title="Standard HTML LINK elements" anchor="html.link">
476<t>
477  LINK elements exist since HTML 2.0. They can be used to embed content-independant
478  links inside the document. Unfortunately, only few user agents
479  support this element. Firefox users may want to check the
480  <eref target="https://addons.mozilla.org/firefox/2933/">Link Widgets</eref>
481  extension.
482</t>
483<texttable>
484<preamble>The following LINK elements are produced:</preamble>
485
486  <ttcol>LINK type</ttcol>
487  <ttcol>description</ttcol>
488 
489  <c>alternate<iref item="alternate HTML LINK element"/><iref item="HTML LINK elements" subitem="alternate"/></c><c>for RFCs, a link to the authorative ASCII version on the IETF web site</c>
490  <c>appendic<iref item="appendix HTML LINK element"/><iref item="HTML LINK elements" subitem="appendix"/></c><c>pointer to all top-level appendics</c>
491  <c>author<iref item="author HTML LINK element"/><iref item="HTML LINK elements" subitem="author"/></c><c>pointer to "authors" section</c>
492  <c>chapter<iref item="chapter HTML LINK element"/><iref item="HTML LINK elements" subitem="chapter"/></c><c>pointer to all top-level sections</c>
493  <c>contents<iref item="contents HTML LINK element"/><iref item="HTML LINK elements" subitem="contents"/></c><c>pointer to table of contents</c>
494  <c>copyright<iref item="copyright HTML LINK element"/><iref item="HTML LINK elements" subitem="copyright"/></c><c>pointer to copyright statement</c>
495  <c>index<iref item="index HTML LINK element"/><iref item="HTML LINK elements" subitem="index"/></c><c>pointer to index</c>
496
497</texttable>
498<figure>
499<preamble>
500The figure below shows how Mozilla Firefox 1.0 displays the Site Navigation Bar
501for rfc2396.xml.
502</preamble>
503<artwork src="rfc2629xslt-fig1.png" height="235" width="509" type="image/png">
504(LINK elements displayed in Mozilla Firefox for RFC2396.xml)
505</artwork>
506</figure>
507
508</section>
509
510
511<section title="Standard HTML metadata">
512<texttable>
513<preamble>The following standard HTML META elements are produced:</preamble>
514
515  <ttcol>META name</ttcol>
516  <ttcol>description</ttcol>
517 
518  <c>generator<iref item="generator HTML META element"/><iref item="HTML META elements" subitem="generator"/></c><c>from XSLT engine version and stylesheet version</c>
519  <c>keywords<iref item="keywords HTML META element"/><iref item="HTML META elements" subitem="keywords"/></c><c>from keyword elements in front section</c>
520
521</texttable>
522</section>
523
524
525<section title="Dublin Core (RFC2731) metadata" anchor="rfc2731.properties">
526<t>
527  Unless turned off using the "rfc-ext support-rfc2731" processing
528  instruction, the transformation will generate metadata according to
529  <xref target="RFC2731"/> and <xref target="DC-HTML"/>.
530</t>
531<texttable>
532<preamble>The following DCMI properties are produced:</preamble>
533
534  <ttcol>META name</ttcol>
535  <ttcol>description</ttcol>
536 
537  <c>DC.Creator<iref item="Creator DCMI property"/><iref item="DCMI properties" subitem="Creator"/></c><c>from author information in front section</c>
538  <c>DC.Date.Issued<iref item="Date.Issued DCMI property"/><iref item="DCMI properties" subitem="Date.Issued"/></c><c>from date information in front section</c>
539  <c>DC.Description.Abstract<iref item="Description.Abstract DCMI property"/><iref item="DCMI properties" subitem="Description.Abstract"/></c><c>from abstract</c>
540  <c>DC.Identifier<iref item="Identifier DCMI property"/><iref item="DCMI properties" subitem="Identifier"/></c><c>document URN <xref target="RFC2648" /> from "docName" attribute</c>
541  <c>DC.isPartOf<iref item="isPartOf DCMI property"/><iref item="DCMI properties" subitem="isPartOf"/></c><c>RFC ISSN (for RFCs)</c>
542  <c>DC.Relation.Replaces<iref item="Relation.Replaces DCMI property"/><iref item="DCMI properties" subitem="Relation.Replaces"/></c><c>from "obsoletes" attribute</c>
543
544</texttable>
545</section>
546
547<section title="Experimental hCard support" anchor="hcard">
548<t>
549  The generated author information is formatted in <eref target="http://microformats.org/wiki/hcard">hCard</eref>
550  format.
551</t>
552</section>
553
554
555</section>
556
557<section title="Transforming to XHTML" anchor="output.xhtml">
558<t>
559  Transforming to XHTML requires slightly different XSLT output options and
560  is implemented by the derived transformation script <spanx style="verb">rfc2629toXHTML.xslt</spanx>.
561</t>
562<t><list><t>
563  <x:h>Note:</x:h> Microsoft Internet Explorer does <spanx>not</spanx> support XHTML.
564  Therefore it usually makes more sense to generate plain old HTML.
565</t></list></t>
566</section>
567
568<section title="Transforming to CHM (Microsoft Compiled Help)" anchor="output.chm">
569<t>
570  <iref item="CHM format"/>
571  <iref item="Microsoft Help"/>
572  To generate a CHM file using Microsoft's HTML Help Compiler (hhc), three
573  files are required in addition to the HTML file.
574  <list style="numbers">
575    <t>hhc - table of contents file (HTML)</t>
576    <t>hhk - index file (HTML)</t>
577    <t>hhp - project file (plain text)</t>
578  </list> 
579</t>
580<t>
581  The three files are generated with three specific transformations, each
582  requiring the additional XSLT parameter "basename" to specify the filename
583  prefix.
584</t>
585<figure>
586<preamble>Example:</preamble>
587<artwork type="example">
588saxon rfc2616.xml rfc2629toHhp.xslt basename=rfc2616  > rfc2616.hhp
589saxon rfc2616.xml rfc2629toHhc.xslt basename=rfc2616  > rfc2616.hhc
590saxon rfc2616.xml rfc2629toHhk.xslt basename=rfc2616  > rfc2616.hhk
591hhc rfc2616.hhp
592</artwork>
593</figure>
594</section>
595
596<section title="Transforming to PDF" anchor="output.pdf">
597
598<section title="Via XSL-FO" anchor="output.pdf.fop">
599<t>
600  Transformation to XSL-FO <xref target="XSL-FO"/> format is available through
601  <spanx style="verb">rfc2629toFO.xslt</spanx> (which includes <spanx style="verb">rfc2629.xslt</spanx>, so keep both in the
602  same folder).
603</t>
604<t>
605  Compared to HTML user agents, XSL-FO engines unfortunately either come
606  as open source (for instance, <iref item="Apache FOP"/>Apache FOP) or
607  feature-complete (for instance, <iref item="AntennaHouse XSL Formatter"/>
608  AntennaHouse XSL Formatter), but not both at the same time.
609</t>
610<t>
611  As Apache FOP needs special workarounds (page breaking, table layout), and
612  some popular extensions aren't standardized yet, the translation produces
613  a generic output (hopefully) conforming to <xref target="XSL-FO"/>.
614  Specific backends (<spanx style="verb">xsl11toFop-0.95xslt</spanx>,
615  <spanx style="verb">xsl11toXep.xslt</spanx>, <spanx style="verb">xsl11toAn.xslt</spanx>)
616  then provide post-processing for the individual processors.
617</t>
618<x:note>
619  <t>
620    <x:h>Note:</x:h>
621    the output is currently targeted at Apache FOP 0.95.
622  </t>
623</x:note>
624
625<section title="Extension feature matrix">
626<texttable>
627  <ttcol/>
628  <ttcol align="center" width="20%">PDF anchors</ttcol>
629  <ttcol align="center" width="20%">PDF bookmarks</ttcol>
630  <ttcol align="center" width="20%">PDF document information</ttcol>
631  <ttcol align="center" width="20%">Index cleanup</ttcol>
632 
633  <c><eref target="http://www.w3.org/TR/2003/WD-xsl11-20031217/">XSL 1.1 WD</eref></c>
634  <c>no, but can be auto-generated from "id" attributes</c> 
635  <c><eref target="http://www.w3.org/TR/2003/WD-xsl11-20031217/#d0e12873">yes</eref></c>
636  <c>no, but uses XEP output extensions</c>
637  <c><eref target="http://www.w3.org/TR/2003/WD-xsl11-20031217/#d0e12534">yes</eref></c>
638
639  <c><eref target="http://www.antennahouse.com/">Antenna House XSL formatter</eref></c>
640  <c>no</c>
641  <c><eref target="http://www.antennahouse.com/XSL20/axf-extension.htm">yes</eref> (from XSL 1.1 bookmarks)</c>
642  <c><eref target="http://www.antennahouse.com/XSL20/axf-extension.htm">yes</eref> (from XEP document info)</c>
643  <c><eref target="http://www.antennahouse.com/XSL20/axf-extension.htm">yes</eref> (just page duplicate elimination, from XSL 1.1 page index)</c>
644
645  <c><eref target="http://xml.apache.org/fop/">Apache FOP</eref></c>
646  <c><eref target="http://xml.apache.org/fop/extensions.html#named-destinations">yes</eref></c>
647  <c><eref target="http://xml.apache.org/fop/extensions.html#bookmarks">yes</eref> (from XSL 1.1 bookmarks)</c>
648  <c><eref target="http://xmlgraphics.apache.org/fop/0.95/metadata.html#xmp-in-fo">yes</eref></c>
649  <c>no</c>
650
651  <c><eref target="http://xep.xattic.com/">RenderX XEP</eref></c>
652  <c>no</c>
653  <c><eref target="http://xep.xattic.com/xep/spec.html">yes</eref> (from XSL 1.1 bookmarks)</c>
654  <c><eref target="http://xep.xattic.com/xep/spec.html">yes</eref></c>
655  <c><eref target="http://xep.xattic.com/xep/spec.html">yes</eref> (from XSL 1.1 page index)</c>
656
657</texttable>
658</section>
659
660<section title="Example: producing output for Apache FOP">
661<figure>
662<preamble>Example:</preamble>
663<artwork type="example">
664saxon rfc2616.xml rfc2629toFo.xslt > tmp.fo
665saxon tmp.fo xsl11toFop-0.95.xslt > rfc2629.fo
666</artwork>
667</figure>
668</section>
669</section>
670
671<section title="Via X(HTML)" anchor="output.pdf.html">
672<t>
673  PDF output can also be produced directly from (X)HTML. One simple approach
674  is to rely on the browser's printing function, and to use a printer driver
675  that produces PDF. Depending on the brower's CSS capabilities, the output
676  will behave properly with respect to table breaks etc.
677</t>
678<t>
679  An alternative is PrinceXML (see <eref target="http://www.princexml.com/"/>),
680  which can produce PDF directly from (X)HTML input, based on the CSS printing
681  information.
682</t>
683<figure>
684  <preamble>
685    For instance, PDF output with text justification turned on can be
686    produced with:
687  </preamble>
688  <artwork type="example">
689saxon input.xml rfc2629toXHTML.xslt xml2rfc-ext-justification=print \
690  > output.xhtml
691prince output.xhtml output.pdf</artwork>
692</figure>
693</section>
694
695</section>
696
697<section title="Generic Extensions" anchor="extensions">
698<t>
699  This section documents extensions implemented in
700  <spanx style="verb">rfc2629.xslt</spanx>, using the extension
701  namespace "http://purl.org/net/xml2rfc/ext".
702</t>
703
704<section title="&lt;abnf-char-sequence> element" anchor="ext.element.abnf-char-sequence">
705  <iref item="Extension Elements" subitem="abnf-char-sequence" primary="true"/>
706  <iref item="abnf-char-sequence Extension Element" primary="true"/>
707  <x:anchor-alias value="abnf-char-sequence"/>
708  <t>
709    Converts the contained quoted string into a hex-encoded character
710    sequence, for use in case-sensitive ABNF productions.
711  </t>
712  <t>
713    For instance, "&lt;x:abnf-char-sequence>"HTTP"&lt;/x:abnf-char-sequence>"
714    gets converted to "<x:abnf-char-sequence>"HTTP"</x:abnf-char-sequence>".
715  </t>
716</section>
717
718<section title="&lt;anchor-alias> element" anchor="ext.element.anchor-alias">
719  <iref item="Extension Elements" subitem="anchor-alias" primary="true"/>
720  <iref item="anchor-alias Extension Element" primary="true"/>
721  <x:anchor-alias value="anchor-alias"/>
722  <t>
723    Using its "value" attribute, this element allows the definition of an
724    internal link target alias for the enclosing element. This alias can
725    then be used with the &lt;<x:ref>ref</x:ref>> element for intra-document
726    references.
727  </t>
728  <t>
729    Note that the anchor alias is not subject to the naming constraints that
730    apply to anchor elements (which are <eref target="http://www.w3.org/TR/REC-xml/#NT-Name">XML
731    names</eref>).
732  </t>
733</section>
734
735<!--<section title="&lt;include-author> element" anchor="ext.element.include-author">
736  <iref item="Extension Elements" subitem="include-author" primary="true"/>
737  <iref item="include-author Extension Element" primary="true"/>
738  <x:anchor-alias value="include-author"/>
739  <t>
740    This element can be used to include an author's contact information in
741    place where a paragraphj (&lt;t>) would be allowed otherwise.
742  </t>
743</section> -->
744
745<section title="&lt;bcp14> element" anchor="ext.element.bcp14">
746  <iref item="Extension Elements" subitem="bcp14" primary="true"/>
747  <iref item="bcp14 Extension Element" primary="true"/>
748  <x:anchor-alias value="bcp14"/>
749  <t>
750    This element marks the content as being one of the normative keywords
751    defined in <xref target="RFC2119"/>.
752  </t>
753  <figure>
754    <preamble>
755      The DOCTYPE definition below allows using these keywords using XML
756      entity expansion: such as in "...server &amp;MUST; accept...".
757    </preamble>
758    <artwork type="example">
759&lt;!DOCTYPE rfc [
760 &lt;!ENTITY MAY "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
761   >MAY&lt;/bcp14>">
762 &lt;!ENTITY MUST "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
763   >MUST&lt;/bcp14>">
764 &lt;!ENTITY MUST-NOT "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
765   >MUST NOT&lt;/bcp14>">
766 &lt;!ENTITY OPTIONAL "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
767   >OPTIONAL&lt;/bcp14>">
768 &lt;!ENTITY RECOMMENDED "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
769   >RECOMMENDED&lt;/bcp14>">
770 &lt;!ENTITY REQUIRED "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
771   >REQUIRED&lt;/bcp14>">
772 &lt;!ENTITY SHALL "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
773   >SHALL&lt;/bcp14>">
774 &lt;!ENTITY SHALL-NOT "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
775   >SHALL NOT&lt;/bcp14>">
776 &lt;!ENTITY SHOULD "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
777   >SHOULD&lt;/bcp14>">
778 &lt;!ENTITY SHOULD-NOT "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
779   >SHOULD NOT&lt;/bcp14>">]></artwork>
780  </figure>
781</section>
782
783<section title="&lt;bb> element" anchor="ext.element.bb">
784  <iref item="Extension Elements" subitem="bb" primary="true"/>
785  <iref item="bb Extension Element" primary="true"/>
786  <x:anchor-alias value="bb"/>
787  <t>
788    Marking up a string as &lt;bb> indicates that it represents the bottom
789    line of a box drawing, replacing the "+" and "-" characters accordingly.
790  </t>
791</section>
792
793<section title="&lt;bc> element" anchor="ext.element.bc">
794  <iref item="Extension Elements" subitem="bc" primary="true"/>
795  <iref item="bc Extension Element" primary="true"/>
796  <x:anchor-alias value="bc"/>
797  <t>
798    Marking up a string as &lt;bc> indicates that it represents a center
799    line of a box drawing, replacing the "|" character accordingly.
800  </t>
801</section>
802
803<section title="&lt;blockquote> element" anchor="ext.element.blockquote">
804  <iref item="Extension Elements" subitem="blockquote" primary="true"/>
805  <iref item="blockquote Extension Element" primary="true"/>
806  <x:anchor-alias value="blockquote"/>
807  <t>
808    This element is like the "<eref target="http://www.w3.org/TR/html401/struct/text.html#edef-BLOCKQUOTE">blockquote</eref>" element in <xref target="HTML"/> 
809    (note this is a block-level element!). It should contain one or more
810    &lt;t> child elements.
811  </t>
812</section>
813
814<section title="&lt;boilerplate> element" anchor="ext.element.boilerplate">
815  <iref item="Extension Elements" subitem="boilerplate" primary="true"/>
816  <iref item="boilerplate Extension Element" primary="true"/>
817  <x:anchor-alias value="boilerplate"/>
818  <t>
819    Can be used to include boilerplate (status, copyright, ...) into the
820    front or back section. &lt;section> elements within &lt;x:boilerplate>
821    appear as unnumbered sections in the output.
822  </t>
823  <t>
824    <spanx>This element currently can not be "down-translated" for use
825    in xml2rfc!</spanx>
826  </t>
827</section>
828
829<section title="&lt;bt> element" anchor="ext.element.bt">
830  <iref item="Extension Elements" subitem="bt" primary="true"/>
831  <iref item="bt Extension Element" primary="true"/>
832  <x:anchor-alias value="bt"/>
833  <t>
834    Marking up a string as &lt;bt> indicates that it represents the top
835    line of a box drawing, replacing the "+" and "-" characters accordingly.
836  </t>
837</section>
838
839<section title="&lt;dfn> element" anchor="ext.element.dfn">
840  <iref item="Extension Elements" subitem="dfn" primary="true"/>
841  <iref item="dfn Extension Element" primary="true"/>
842  <x:anchor-alias value="dfn"/>
843  <t>
844    This element is like the "<eref target="http://www.w3.org/TR/html401/struct/text.html#edef-DFN">dfn</eref>" element in <xref target="HTML"/>.
845  </t>
846</section>
847
848<section title="&lt;h> element" anchor="ext.element.h">
849  <iref item="Extension Elements" subitem="h" primary="true"/>
850  <iref item="h Extension Element" primary="true"/>
851  <x:anchor-alias value="h"/>
852  <t>
853    This element is like the "<eref target="http://www.w3.org/TR/2006/WD-xhtml2-20060726/mod-structural.html#edef_structural_h">h</eref>" element in <xref target="XHTML2"/>.
854  </t>
855</section>
856
857<section title="&lt;highlight> element" anchor="ext.element.highlight">
858  <iref item="Extension Elements" subitem="highlight" primary="true"/>
859  <iref item="highlight Extension Element" primary="true"/>
860  <x:anchor-alias value="highlight"/>
861  <t>
862    Used to highlight text passages, currently only allowed in &lt;artwork>.
863  </t>
864  <t>
865    <x:h>Note:</x:h> this is stripped when generating input for xml2rfc,
866    so please use with care.
867  </t>
868</section>
869
870<section title="&lt;length-of> element" anchor="ext.element.length-of">
871  <iref item="Extension Elements" subitem="length-of" primary="true"/>
872  <iref item="length-of Extension Element" primary="true"/>
873  <x:anchor-alias value="length-of"/>
874  <t>
875    This element can be used to insert the length of another formatted
876    section (in decimal).
877  </t>
878  <figure>
879    <preamble>Example: computing the Content-Length header value</preamble>
880    <artwork type="example">
881&lt;artwork>
882...
883Content-Length: &lt;x:length-of target="req"/>
884 
885&lt;x:span anchor="req">123456789
886&lt;x:span>&lt;artwork/>
887</artwork>
888  </figure>
889  <t>
890    The lenght computation counts line ends as two characters (CRLF).
891  </t>
892  <t>
893    Note that indentation characters in artwork <spanx>will</spanx> be
894    counted. The "indented" attribute allows to specify the amount of
895    indentation to be substracted from the computed length.
896  </t>
897</section>
898
899<section title="&lt;link> element" anchor="ext.element.link">
900  <iref item="Extension Elements" subitem="link" primary="true"/>
901  <iref item="link Extension Element" primary="true"/>
902  <x:anchor-alias value="link"/>
903  <t>
904    This element can be added as a top-level child element below
905    &lt;rfc> to indicate additional link information. It's currently
906    used only when generating HTML output, in which case an HTML
907    <eref target="http://www.w3.org/TR/html4/struct/links.html#edef-LINK">&lt;link></eref> element with identical attributes gets generated.
908  </t>
909  <figure>
910    <preamble>Example: generating HTML link element</preamble>
911    <artwork type="example">
912        &lt;x:link xmlns="http://purl.org/net/xml2rfc/ext"
913            rel="Bookmark"
914            title="IETF WEBDAV Working Group"
915            href="http://ftp.ics.uci.edu/pub/ietf/webdav/"/></artwork>
916  </figure>
917</section>
918
919<section title="&lt;lt> element" anchor="ext.element.lt">
920  <iref item="Extension Elements" subitem="lt" primary="true"/>
921  <iref item="lt Extension Element" primary="true"/>
922  <x:anchor-alias value="lt"/>
923  <t>
924    Used for grouping multiple &lt;t&gt; elements into a single list item.
925  </t>
926</section>
927
928<section title="&lt;note> element" anchor="ext.element.note">
929  <iref item="Extension Elements" subitem="note" primary="true"/>
930  <iref item="note Extension Element" primary="true"/>
931  <x:anchor-alias value="note"/>
932  <t>
933    Can be used to add a note, usually indented by a few characters.
934    It should contain one or more &lt;t> child elements.
935  </t>
936</section>
937
938<section title="&lt;parse-xml> element" anchor="ext.element.parse-xml">
939  <iref item="Extension Elements" subitem="parse-xml" primary="true"/>
940  <iref item="parse-xml Extension Element" primary="true"/>
941  <x:anchor-alias value="parse-xml"/>
942  <t>
943    This element instructs the processor to parse the contents as XML and
944    to warn when there's a problem (requires either MSXML or Saxon8 or newer).
945  </t>
946</section>
947
948<section title="&lt;q> element" anchor="ext.element.q">
949  <iref item="Extension Elements" subitem="q" primary="true"/>
950  <iref item="q Extension Element" primary="true"/>
951  <x:anchor-alias value="q"/>
952  <t>
953    This element is like the "<eref target="http://www.w3.org/TR/html401/struct/text.html#edef-Q">q</eref>" element in <xref target="HTML"/>.
954  </t>
955</section>
956
957<section title="&lt;ref> element" anchor="ext.element.ref">
958  <iref item="Extension Elements" subitem="ref" primary="true"/>
959  <iref item="ref Extension Element" primary="true"/>
960  <x:anchor-alias value="ref"/>
961  <t>
962    This element is a simplified variant of the &lt;xref> element, in that
963    no "target" attribute needs to be specified, instead the text contents
964    acts as identifier.  That in itself wouldn't be terribly useful,
965    but together with the &lt;<x:ref>anchor-alias</x:ref>>, it allows
966    referring to other parts of the document with minimal additional markup.
967  </t>
968  <t>
969    For instance, given an alias definition such as
970  </t>
971  <figure>
972    <artwork type="example">
973      &lt;section title="Test" anchor="test">
974        &lt;x:anchor-alias value="alias1"/>
975        &lt;x:anchor-alias value="alias 2"/>
976        ...
977      &lt;/section></artwork>
978  </figure>
979  <t>
980    the following simple references
981  </t>
982  <figure>
983    <artwork type="example">
984      &lt;x:ref>test&lt;/x:ref>
985      &lt;x:ref>alias1&lt;/x:ref>
986      &lt;x:ref>alias 2&lt;/x:ref></artwork>
987  </figure>
988  <t>
989    are equivalent to...:
990  </t>
991  <figure>
992    <artwork type="example">
993      &lt;xref target="test">test&lt;/xref>
994      &lt;xref target="test">alias1&lt;/xref>
995      &lt;xref target="test">alias 2&lt;/xref></artwork>
996  </figure>
997</section>
998
999<section title="&lt;source> element" anchor="ext.element.source">
1000  <iref item="Extension Elements" subitem="source" primary="true"/>
1001  <iref item="source Extension Element" primary="true"/>
1002  <x:anchor-alias value="source"/>
1003  <t>
1004    Can be used to enhance a &lt;reference> with information about the
1005    location for the XML source. This can be used by the &lt;xref>
1006    processing code to automatically extract the target section number.
1007  </t>
1008  <figure>
1009    <preamble>
1010      For example:
1011    </preamble>
1012    <artwork type="example">
1013      ...
1014      &lt;xref target="RFC2616" x:fmt="of" x:rel="#PUT" />
1015      ...
1016   
1017      &lt;reference target="RFC2616"/>
1018        ...
1019        &lt;x:source href="rfc2616.xml"/>
1020        ...
1021    </artwork>
1022  </figure>
1023</section>
1024
1025<section title="&lt;sup> element" anchor="ext.element.sup">
1026  <iref item="Extension Elements" subitem="sup" primary="true"/>
1027  <iref item="sup Extension Element" primary="true"/>
1028  <x:anchor-alias value="sup"/>
1029  <t>
1030    This element is like the "<eref target="http://www.w3.org/TR/html401/struct/text.html#edef-SUP">sup</eref>" element in <xref target="HTML"/>.
1031  </t>
1032  <t>
1033    Note: the down conversion to RFC2629 format replaces
1034    "x<x:sup>y</x:sup>" by "x^y".
1035  </t>
1036</section>
1037
1038<section title="Extensions to Xml2rfc &lt;artwork&gt; element" anchor="ext-rfc2629.artwork">
1039<t>
1040  Sometimes, artwork occurs inside lists. To get it indent properly in xml2rfc's
1041  text output, it needs to be indented in the source. This is sub-optimal, as
1042  this whitespace will also appear in the HTML output, where it's already
1043  indented due to HTML's semantics.
1044</t>
1045<t>
1046  As a workaround, a "x:indent-with" attribute can be specified, containing
1047  a string that will be prepended to each line when <spanx style="verb">clean-for-DTD.xslt</spanx>
1048  is run (see <xref target="clean-for-dtd"/>).
1049</t>
1050</section>
1051
1052<section title="Extensions to Xml2rfc &lt;iref&gt; element" anchor="ext-rfc2629.iref">
1053<t>
1054  The extension attribute below is allowed on the standard &lt;iref&gt; element:
1055  <list style="symbols">
1056    <t>x:for-anchor specifies that the &lt;iref&gt; will also be automatically
1057    inserted whenever the specified anchor is cross-referenced -- this may
1058    save entering lots of &lt;iref&gt; instances. As a special case, a value of
1059    "" (empty string) refers to the anchor attribute of the closest ancestor.</t>
1060  </list>
1061</t>
1062</section>
1063
1064<section title="Extensions to Xml2rfc &lt;list&gt; element" anchor="ext-rfc2629.list">
1065<t>
1066  The extension attribute below is allowed on the standard &lt;list&gt; element:
1067  <list style="symbols">
1068    <t>x:indent specifies the amount of indentation for list items in hanging
1069    lists. This can be useful when the output format, such as XSL-FO, does not
1070    support automatical formatting. The value takes an XSL-FO width, such as "5em".
1071    The default is <spanx>length of longest label in characters</spanx> times
1072    <spanx>0.8em</spanx>.</t>
1073  </list>
1074</t>
1075<t>
1076  Also, the &lt;list&gt; element can take &lt;x:<x:ref>lt</x:ref>&gt; child elements instead of
1077  &lt;t&gt;, allowing to insert multiple paragraphs into a single list item.
1078</t>
1079</section>
1080
1081<section title="Extensions to Xml2rfc &lt;rfc&gt; element" anchor="ext-rfc2629.rfc">
1082<t>
1083  The extension attributes below are allowed on the standard &lt;rfc&gt; element:
1084  <list style="symbols">
1085    <t>grddl:transformation can be used to reference a GRDDL transform.</t>
1086    <t>x:maturiy-level can be used to specify the IETF Standards Track
1087    Maturity Level of "proposed", "draft" or "internet" (see <xref target="RFC2026" x:fmt="of" x:sec="4.1"/>).</t>
1088  </list>
1089</t>
1090</section>
1091
1092<section title="Extensions to Xml2rfc &lt;section&gt; element" anchor="ext-rfc2629.section">
1093<t>
1094  The extension attribute below is allowed on the standard &lt;list&gt; element:
1095  <list style="symbols">
1096    <t>x:fixed-section-number can be used to specify a fixed section number.
1097    This can be useful when formatting historic documents that used a different
1098    numbering style.</t>
1099  </list>
1100</t>
1101</section>
1102
1103<section title="Extensions to Xml2rfc &lt;xref&gt; element" anchor="ext-rfc2629.xref">
1104<t>
1105  Three extension attributes are allowed on the standard &lt;xref&gt; element:
1106  <list style="numbers">
1107    <t>x:sec can be specified to point to a specific section of the referenced document,</t>
1108    <t>x:rel may specify a relative reference to use when linking into the referenced document (if linking by section number is not available),</t>
1109    <t>x:fmt defines the text format to be used.</t>
1110  </list>
1111</t>
1112<t>
1113  The following formats are defined for the x:fmt attribute:
1114  <list style="hanging">
1115    <t hangText=", (Comma)">
1116      [<spanx>reference</spanx>], Section <spanx>sec</spanx>
1117    </t>
1118    <t hangText="()">
1119      [<spanx>reference</spanx>] (Section <spanx>sec</spanx>)
1120    </t>
1121    <t hangText="anchor">
1122      Like the default format, but without brackets.
1123    </t>
1124    <t hangText="of">
1125      Section <spanx>sec</spanx> of [<spanx>reference</spanx>]
1126    </t>
1127    <t hangText="number">
1128      <spanx>sec</spanx>
1129    </t>
1130    <t hangText="none">
1131      No output (can be used to have xrefs to references without
1132      having them rendered as such)
1133    </t>
1134    <t hangText="sec">
1135      Section <spanx>sec</spanx>
1136    </t>
1137  </list>
1138</t>
1139<t>
1140  These extensions are currently only supported for &lt;xref&gt; elements without
1141  child nodes.
1142</t>
1143<t>
1144  If the processor knows how to reference the target section, it will generate
1145  a link directly to the target section, such as in <xref target="RFC2119" x:fmt="," x:sec="5"/>.
1146</t>
1147</section>
1148
1149</section>
1150
1151<section title="Utilities" anchor="utilities">
1152
1153<section title="Checking References" anchor="checking-references">
1154<t>
1155  <spanx style="verb">check-references.xslt</spanx> can be used to check
1156  all references to RFC- and ID-series IETF publications and to W3C publications (note
1157  this script requires local copies of
1158  <eref target="ftp://ftp.isi.edu/in-notes/rfc-index.xml"/> and
1159  <eref target="http://www.w3.org/2002/01/tr-automation/tr.rdf"/> and
1160  will use the XML status information provided at <eref target="http://tools.ietf.org/"/>).
1161</t>
1162<t>
1163  If the document is supposed to be published on the IETF standards track,
1164  the desired level can be specified using the parameter <spanx style='verb'>intended-level</spanx>
1165  as 'proposed', 'draft' or 'internet'. Alternatively, it can be specified
1166  inside the document using the attribute x:maturity-level on the &lt;rfc> element.
1167</t>
1168<t>
1169  <x:h>Note:</x:h> Downward references should be
1170  annotated using the &lt;annotate> element, containing an &lt;xref> to
1171  <xref target="BCP97"/>.
1172</t>
1173<t>
1174  When an XSLT 2.0 processor is used, links in the document can be checked as well
1175  using the <spanx style='verb'>link-check</spanx> paramerer ('yes' or 'no').
1176  Note that this only works for http links to documents of type text/*.
1177</t>
1178<figure>
1179<preamble>
1180For instance, as of 2008-07-12, the script produces for <eref target="http://greenbytes.de/tech/webdav/rfc2518.xml"/>:
1181</preamble>
1182<artwork type="example">
1183> saxon rfc2518.xml check-references.xslt intended-status=PROPOSED \
1184  link-check=yes
1185
1186Normative References:
1187ISO-11578: not checked
1188ISO-639: not checked
1189ISO-8601: not checked
1190REC-xml-19980210: [FirstEdition] obsoleted by REC-xml-20001006
1191REC-xml-names-19990114: [FirstEdition] obsoleted by
1192 REC-xml-names-20060816
1193RFC1766: [PROPOSED STANDARD] obsoleted by RFC3066 RFC3282
1194RFC2068: [PROPOSED STANDARD] obsoleted by RFC2616
1195RFC2069: [PROPOSED STANDARD] obsoleted by RFC2617
1196RFC2119: [BEST CURRENT PRACTICE] (-> BCP0014) ok
1197RFC2141: [PROPOSED STANDARD] ok
1198RFC2277: [BEST CURRENT PRACTICE] (-> BCP0018) ok
1199RFC2396: [DRAFT STANDARD] obsoleted by RFC3986
1200RFC2279: [DRAFT STANDARD] obsoleted by RFC3629
1201
1202Informational References:
1203REC-PICS-labels-961031: [REC] ok
1204RFC1807: [INFORMATIONAL] ok
1205RFC2026: [BEST CURRENT PRACTICE] (-> BCP0009) ok
1206RFC2291: [INFORMATIONAL] ok
1207RFC2376: [INFORMATIONAL] obsoleted by RFC3023
1208RFC2413: [INFORMATIONAL] obsoleted by RFC5013
1209USMARC: not checked
1210WF: not checked
1211
1212Link Targets
1213&lt;http://www.w3.org/TR/1998/REC-xml-19980210>: ok
1214&lt;http://www.w3.org/TR/1999/REC-xml-names-19990114>: ok
1215&lt;http://www.dlib.org/dlib/july96/lagoze/07lagoze.html>: ok
1216&lt;http://www.w3.org/pub/WWW/TR/REC-PICS-labels-961031.html>: ok
1217</artwork></figure>
1218<t>
1219  Recognized formats in the &lt;seriesInfo> element are:
1220  <list style="symbols">
1221    <t>for RFCs, the name attribute must be "RFC", and the value attribute must
1222    be the number of the RFC,</t>
1223    <t>for Internet Drafs, the name attribute must be "ID" or "Internet-Draft", and the value attribute must
1224    be the file name of the draft (including the two-digit running number, but excluding a file extension),</t>
1225    <t>for W3C documents, the name attribute must be "W3C", must start with "W3C&#160;", or
1226    must start with "World Wide Web Consortium&#160;", and the value attribute
1227    must be the "shorthand" name of the specification, such as "REC-xml-19980210".</t>
1228  </list>
1229</t>
1230<x:note>
1231<t>
1232  <x:h>Note:</x:h> this stylesheet will need network access to check links and
1233  status of Internet Drafts. When running a Java-based XSLT engine, you may have
1234  to supply Java system properties specifying the HTTP proxy to be used, such
1235  as "-Dhttp.proxyHost=hostname -Dhttp.proxyPort=80".
1236</t>
1237</x:note>
1238
1239</section>
1240
1241<section title="Generating Graphs from References">
1242<t>
1243  <spanx style="verb">gen-reference-graph.xslt</spanx> generates a graph
1244  of RFC dependencies, using the same base data as in <spanx style="verb">check-references.xslt</spanx>
1245  (see <xref target="checking-references"/>). Its output is a "dot" file,
1246  to be processed by GraphViz (see <eref target="http://www.graphviz.org/"/>).
1247</t>
1248<figure>
1249<preamble>
1250The picture below shows the RFC dependencies in RFC2629.
1251</preamble>
1252<artwork src="rfc2629xslt-fig2.png" type="image/png">
1253(PNG output obtained from GraphViz)
1254</artwork>
1255</figure>
1256</section>
1257
1258<section title="Producing reference entries for books">
1259<t>
1260  <spanx style="verb">amazon-asin.xslt</spanx> uses the Amazon web services
1261  to generate a &lt;reference> element for a given ASIN (ISBN).
1262</t>
1263<figure>
1264<preamble>For instance:</preamble>
1265<artwork type="example">
1266&lt;?xml version="1.0" encoding="utf-8"?>
1267&lt;references>
1268 &lt;reference target="urn:isbn:0134516591">
1269   &lt;front>
1270     &lt;title>Simple Book, The: An Introduction to Internet Management,
1271               Revised Second Edition&lt;/title>
1272     &lt;author surname="Rose"
1273                fullname="Marshall T. Rose" initials="M. T. ">
1274       &lt;organization/>
1275     &lt;/author>
1276     &lt;author surname="Marshall"
1277                fullname="Rose T. Marshall" initials="R. T.">
1278       &lt;organization/>
1279     &lt;/author>
1280     &lt;date year="1996" month="March"/>
1281   &lt;/front>
1282   &lt;seriesInfo name="Prentice Hall" value=""/>
1283 &lt;/reference>
1284&lt;/references>
1285</artwork></figure>
1286<t>
1287  Note that the resulting XML usually requires checking, in this case Amazon's
1288  database is playing tricks with Marshall's name...
1289</t>
1290</section>
1291
1292<section title="Down-converting to RFC2629bis DTD" anchor="clean-for-dtd">
1293<t>
1294  <spanx style="verb">clean-for-DTD.xslt</spanx> can be used to down-convert
1295  some extensions to a format that is supported by the base xml2rfc
1296  distribution.  Note that these extensions are experimental (feedback
1297  appreciated).
1298</t>
1299<t>
1300  The following mappings are done:
1301  <list style="symbols">
1302    <t>
1303      &lt;iref> elements inside &lt;artwork> elements are moved in front
1304      of the enclosing &lt;figure> element.
1305    </t>
1306    <t>
1307      &lt;xref> elements inside &lt;artwork> are expanded just like in
1308      regular text (that is, the markup is stripped, but the element
1309      is replaced by the applicable replacement text).
1310    </t>
1311    <t>
1312      &lt;x:<x:ref>anchor-alias</x:ref>> elements get stripped.
1313    </t>
1314    <t>
1315      &lt;x:<x:ref>bcp14</x:ref>> elements get stripped.
1316    </t>
1317    <t>
1318      &lt;x:<x:ref>bb</x:ref>>, &lt;x:<x:ref>bc</x:ref>> and &lt;x:<x:ref>bt</x:ref>> elements get stripped.
1319    </t>
1320    <t>
1321      &lt;x:<x:ref>blockquote</x:ref>> elements get converted to
1322      indented text (through a &lt;list> element).
1323    </t>
1324    <t>
1325      &lt;x:<x:ref>dfn</x:ref>> elements get stripped.
1326    </t>
1327    <t>
1328      &lt;x:<x:ref>h</x:ref>> elements get stripped.
1329    </t>
1330    <t>
1331      &lt;x:<x:ref>link</x:ref>> elements get stripped.
1332    </t>
1333    <t>
1334      &lt;x:<x:ref>note</x:ref>> elements get converted to
1335      indented text (through a &lt;list> element).
1336    </t>
1337    <t>
1338      &lt;x:<x:ref>q</x:ref>> elements get stripped, with apostrophes
1339      added around the text.
1340    </t>
1341    <t>
1342      &lt;x:<x:ref>ref</x:ref>> elements get replaced by &lt;xref>
1343      elements, targetting either the anchor or another anchor with
1344      matching &lt;x:<x:ref>anchor-alias</x:ref>> child element.
1345    </t>
1346  </list>
1347</t>
1348</section>
1349
1350<section title="Extracting artwork" anchor="extract-artwork">
1351<t>
1352  With <spanx style="verb">extract-artwork.xslt</spanx>, artwork elements
1353  named through the "name" attribute can be extracted. This can be used
1354  to automatically check their syntax (for instance, when ABNFs appear
1355  within a figure element).
1356</t>
1357<figure><preamble>For instance:</preamble>
1358<artwork type="example">saxon rfc3986.xml extract-artwork.xslt name=uri.abnf
1359</artwork>
1360</figure>
1361<t>
1362  In addition, artwork of a specific type can be extracted, such as with:
1363</t>
1364<figure>
1365<artwork type="example">saxon rfc3986.xml extract-artwork.xslt type=abnf
1366</artwork>
1367</figure>
1368</section>
1369
1370<section title="GRRDL" anchor="grddl">
1371<t>
1372  <spanx style="verb">rfc2629grddl.xslt</spanx> extracts RDF
1373  information. This is experimental work-in-progress. See
1374  <eref target="http://www.w3.org/TR/grddl/"/> for more information.
1375</t>
1376</section>
1377</section>
1378
1379 
1380
1381</middle>
1382
1383<back>
1384<references title="Informative References">
1385
1386<reference anchor='RFC2026'>
1387  <front>
1388    <title abbrev='Internet Standards Process'>The Internet Standards Process -- Revision 3</title>
1389    <author initials='S.' surname='Bradner' fullname='Scott O. Bradner'>
1390      <organization>Harvard University</organization>
1391      <address>
1392        <email>sob@harvard.edu</email>
1393      </address>
1394    </author>
1395    <date year='1996' month='October' />
1396  </front>
1397  <seriesInfo name='BCP' value='9' />
1398  <seriesInfo name='RFC' value='2026' />
1399</reference>
1400
1401<reference anchor="RFC2119">
1402  <front>
1403    <title abbrev="RFC Key Words">Key words for use in RFCs to Indicate Requirement Levels</title>
1404    <author initials="S." surname="Bradner" fullname="Scott Bradner">
1405      <organization>Harvard University</organization>
1406      <address>
1407        <email>sob@harvard.edu</email>
1408      </address>
1409    </author>
1410    <date month="March" year="1997"/>
1411  </front>
1412  <seriesInfo name="BCP" value="14"/>
1413  <seriesInfo name="RFC" value="2119"/>
1414</reference>
1415
1416<reference anchor="RFC2616">
1417  <front>
1418  <title abbrev="HTTP/1.1">Hypertext Transfer Protocol -- HTTP/1.1</title>
1419  <author initials="R.T." surname="Fielding" fullname="Roy T. Fielding">
1420  <organization>University of California, Irvine, Information and Computer Science</organization>
1421  <address>
1422  <postal>
1423  <street/>
1424  <city>Irvine</city>
1425  <region>CA</region>
1426  <code>92697-3425</code>
1427  <country>US</country></postal>
1428  <phone>+1 949 824 1715</phone>
1429  <email>fielding@ics.uci.edu</email></address></author>
1430  <author initials="J." surname="Gettys" fullname="James Gettys">
1431  <organization>World Wide Web Consortium, MIT Laboratory for Computer Science</organization>
1432  <address>
1433  <postal>
1434  <street>545 Technology Square</street>
1435  <city>Cambridge</city>
1436  <region>MA</region>
1437  <code>02139</code>
1438  <country>US</country></postal>
1439  <phone/>
1440  <facsimile>+1 617 258 8682</facsimile>
1441  <email>jg@w3.org</email></address></author>
1442  <author initials="J.C." surname="Mogul" fullname="Jeffrey C. Mogul">
1443  <organization>Compaq Computer Corporation, Western Research Laboratory</organization>
1444  <address>
1445  <postal>
1446  <street>250 University Avenue</street>
1447  <city>Palo Alto</city>
1448  <region>CA</region>
1449  <code>94301</code>
1450  <country>US</country></postal>
1451  <phone/>
1452  <email>mogul@wrl.dec.com</email></address></author>
1453  <author initials="H.F." surname="Nielsen" fullname="Henrik Frystyk Nielsen">
1454  <organization>World Wide Web Consortium, MIT Laboratory for Computer Science</organization>
1455  <address>
1456  <postal>
1457  <street>545 Technology Square</street>
1458  <city>Cambridge</city>
1459  <region>MA</region>
1460  <code>02139</code>
1461  <country>US</country></postal>
1462  <phone/>
1463  <facsimile>+1 617 258 8682</facsimile>
1464  <email>frystyk@w3.org</email></address></author>
1465  <author initials="L." surname="Masinter" fullname="Larry Masinter">
1466  <organization>Xerox Corporation</organization>
1467  <address>
1468  <postal>
1469  <street>3333 Coyote Hill Road</street>
1470  <city>Palo Alto</city>
1471  <region>CA</region>
1472  <code>94034</code>
1473  <country>US</country></postal>
1474  <phone/>
1475  <email>masinter@parc.xerox.com</email></address></author>
1476  <author initials="P.J." surname="Leach" fullname="Paul J. Leach">
1477  <organization>Microsoft Corporation</organization>
1478  <address>
1479  <postal>
1480  <street>1 Microsoft Way</street>
1481  <city>Redmond</city>
1482  <region>WA</region>
1483  <code>98052</code>
1484  <country>US</country></postal>
1485  <phone/>
1486  <email>paulle@microsoft.com</email></address></author>
1487  <author initials="T." surname="Berners-Lee" fullname="Tim Berners-Lee">
1488  <organization>World Wide Web Consortium, MIT Laboratory for Computer Science</organization>
1489  <address>
1490  <postal>
1491  <street>545 Technology Square</street>
1492  <city>Cambridge</city>
1493  <region>MA</region>
1494  <code>02139</code>
1495  <country>US</country></postal>
1496  <phone>+1 617 258 8682</phone>
1497  <facsimile/>
1498  <email>timbl@w3.org</email></address></author>
1499  <date month="June" year="1999"/>
1500  </front>
1501  <seriesInfo name="RFC" value="2616"/>
1502</reference>
1503
1504<reference anchor='RFC2629'>
1505  <front>
1506    <title>Writing I-Ds and RFCs using XML</title>
1507    <author initials='M.T.' surname='Rose' fullname='Marshall T. Rose'>
1508      <organization>Invisible Worlds, Inc.</organization>
1509      <address>
1510        <postal>
1511          <street>660 York Street</street>
1512          <city>San Francisco</city>
1513          <region>CA</region>
1514          <code>94110</code>
1515          <country>US</country>
1516        </postal>
1517        <phone>+1 415 695 3975</phone>
1518        <email>mrose@not.invisible.net</email>
1519        <uri>http://invisible.net/</uri>
1520      </address>
1521    </author>
1522    <date month='June' year='1999' />
1523  </front>
1524  <seriesInfo name='RFC' value='2629' />
1525</reference>
1526
1527<reference anchor='RFC2648'>
1528  <front>
1529    <title>A URN Namespace for IETF Documents</title>
1530    <author initials='R.' surname='Moats' fullname='Ryan Moats'>
1531      <organization>AT&amp;T</organization>
1532      <address>
1533      <postal>
1534        <street>15621 Drexel Circle</street>
1535        <city>Omaha</city>
1536        <region>NE</region>
1537        <code>68135-2358</code>
1538        <country>US</country>
1539      </postal>
1540      <email>jayhawk@att.com</email></address>
1541    </author>
1542    <date month='August' year='1999' />
1543  </front>
1544  <seriesInfo name='RFC' value='2648' />
1545</reference>
1546
1547<reference anchor='RFC2731'>
1548  <front>
1549    <title>Encoding Dublin Core Metadata in HTML</title>
1550    <author initials='J.A.' surname='Kunze' fullname='John A. Kunze'>
1551      <organization>University of California, San Francisco,  Center for Knowledge Management</organization>
1552      <address>
1553        <postal>
1554          <street>530 Parnassus Ave</street>
1555          <street>Box 0840</street>
1556          <city>San Francisco</city>
1557          <region>CA</region>
1558          <code>94143-0840</code>
1559          <country>US</country>
1560        </postal>
1561        <facsimile>+1 415 476 4653</facsimile>
1562        <email>jak@ckm.ucsf.edu</email>
1563      </address>
1564    </author>
1565    <date month='December' year='1999' />
1566  </front>
1567  <seriesInfo name='RFC' value='2731' />
1568</reference>
1569
1570<reference anchor='DC-HTML' target="http://dublincore.org/documents/2008/08/04/dc-html/">
1571  <front>
1572    <title>Expressing Dublin Core metadata using HTML/XHTML meta and link elements</title>
1573    <author initials='P.' surname='Johnston' fullname='Pete Johnston'>
1574      <organization>Eduserv Foundation</organization>
1575      <address>
1576        <email>pete.johnston@eduserv.org.uk</email>
1577      </address>
1578    </author>
1579    <author initials='A.' surname='Powell' fullname='Andy Powell'>
1580      <organization>Eduserv Foundation</organization>
1581      <address>
1582        <email>andy.powell@eduserv.org.uk</email>
1583      </address>
1584    </author>
1585    <date month='August' year='2008' />
1586  </front>
1587  <seriesInfo name='Dublin Core Metadata Initiative' value='' />
1588</reference>
1589
1590<reference anchor="RFC5234">
1591  <front>
1592    <title abbrev="ABNF for Syntax Specifications">Augmented BNF for Syntax Specifications: ABNF</title>
1593    <author initials="D." surname="Crocker" fullname="Dave Crocker" role="editor">
1594      <organization>Brandenburg InternetWorking</organization>
1595      <address>
1596      <postal>
1597      <street>675 Spruce Dr.</street>
1598      <city>Sunnyvale</city>
1599      <region>CA</region>
1600      <code>94086</code>
1601      <country>US</country></postal>
1602      <phone>+1.408.246.8253</phone>
1603      <email>dcrocker@bbiw.net</email></address> 
1604    </author>
1605    <author initials="P." surname="Overell" fullname="Paul Overell">
1606      <organization>THUS plc.</organization>
1607      <address>
1608      <postal>
1609      <street>1/2 Berkeley Square</street>
1610      <street>99 Berkely Street</street>
1611      <city>Glasgow</city>
1612      <code>G3 7HR</code>
1613      <country>UK</country></postal>
1614      <email>paul.overell@thus.net</email></address>
1615    </author>
1616    <date month="January" year="2008"/>
1617  </front>
1618  <seriesInfo name="STD" value="68"/>
1619  <seriesInfo name="RFC" value="5234"/>
1620</reference>
1621
1622<reference anchor="HTML" target="http://www.w3.org/TR/html401/">
1623  <front>
1624    <title>HTML 4.01 Specification</title>
1625    <author initials="D." surname="Raggett" fullname="David Raggett">
1626      <organization>W3C</organization>
1627      <address>
1628        <email>dsr@w3.org</email>
1629      </address>
1630    </author>
1631    <author initials="A." surname="Hors" fullname="Arnaud Le Hors">
1632      <organization>W3C</organization>
1633    </author>
1634    <author initials="I." surname="Jacobs" fullname="Ian Jacobs">
1635      <organization>W3C</organization>
1636    </author>
1637    <date month="December" day="24" year="1999" />
1638  </front>
1639  <seriesInfo name="W3C" value="REC-html401-19991224" />
1640</reference>
1641
1642<reference anchor="XHTML2" target="http://www.w3.org/TR/xhtml2">
1643  <front>
1644    <title>XHTML&#8482; 2.0</title>
1645    <author initials="J." surname="Axelsson" fullname="Jonny Axelsson">
1646      <organization>Opera Software</organization>
1647    </author>
1648    <author initials="M." surname="Birbeck" fullname="Mark Birbeck">
1649      <organization>x-port.net</organization>
1650    </author>
1651    <author initials="M." surname="Dubinko" fullname="Micah Dubinko">
1652      <organization></organization>
1653    </author>
1654    <author initials="B." surname="Epperson" fullname="Beth Epperson">
1655      <organization>Websense</organization>
1656    </author>
1657    <author initials="M." surname="Ishikawa" fullname="Masayasu Ishikawa">
1658      <organization>W3C</organization>
1659    </author>
1660    <author initials="S." surname="McCarron" fullname="Shane McCarron">
1661      <organization>Applied Testing and Technology</organization>
1662    </author>
1663    <author initials="A." surname="Navarro" fullname="Ann Navarro">
1664      <organization>WebGeek, Inc.</organization>
1665    </author>
1666    <author initials="S." surname="Pemberton" fullname="Steven Pemberton">
1667      <organization>CWI</organization>
1668    </author>
1669    <date month="July" day="26" year="2006" />
1670  </front>
1671  <seriesInfo name="W3C" value="WD-xhtml2-20060726" />
1672</reference>
1673
1674<reference anchor="XSL-FO" target="http://www.w3.org/TR/2006/REC-xsl11-20061205/">
1675  <front>
1676    <title>Extensible Stylesheet Language (XSL) Version 1.1</title>
1677    <author initials="A." surname="Berglund" fullname="Anders Berglund">
1678      <organization>IBM</organization>
1679      <address>
1680        <email>alrb@us.ibm.com</email>
1681      </address>
1682    </author>
1683    <date month="Dec" day="5" year="2006" />
1684  </front>
1685  <seriesInfo name="W3C" value="REC-xsl11-20061205" />
1686</reference>
1687
1688<reference anchor="RNC" target="http://www.oasis-open.org/committees/relax-ng/compact-20021121.html">
1689  <front>
1690    <title>RELAX NG Compact Syntax</title>
1691    <author initials="J." surname="Clark" fullname="James Clark">
1692      <organization/>
1693      <address>
1694        <email>jjc@jclark.com</email>
1695      </address>
1696    </author>
1697    <date month="Nov" day="21" year="2002" />
1698  </front>
1699  <seriesInfo name="OASIS" value=""/>
1700</reference>
1701
1702<reference anchor='BCP97'>
1703  <front>
1704    <title>Handling Normative References to Standards-Track Documents</title>
1705    <author initials='J.' surname='Klensin' fullname='J. Klensin'>
1706      <organization />
1707      <address>
1708        <email>klensin+ietf@jck.com</email>
1709      </address>
1710    </author>
1711    <author initials='S.' surname='Hartman' fullname='S. Hartman'>
1712      <organization>MIT</organization>
1713      <address>
1714        <email>hartmans-ietf@mit.edu</email>
1715      </address>
1716    </author>
1717    <date year='2007' month='June' />
1718  </front>
1719  <seriesInfo name='BCP' value='97' />
1720  <seriesInfo name='RFC' value='4897' />
1721</reference>
1722
1723<reference anchor="XML" target="http://www.w3.org/TR/2008/REC-xml-20081126/">
1724  <front>
1725    <title>Extensible Markup Language (XML) 1.0 (Fifth Edition)</title>
1726    <author initials="T." surname="Bray" fullname="Tim Bray">
1727      <organization>Textuality and Netscape</organization>
1728      <address>
1729        <email>tbray@textuality.com</email>
1730      </address>
1731    </author>
1732    <author initials="J." surname="Paoli" fullname="Jean Paoli">
1733      <organization>Microsoft</organization>
1734      <address>
1735        <email>jeanpa@microsoft.com</email>
1736      </address>
1737    </author>
1738    <author initials="C.M." surname="Sperberg-McQueen" fullname="C. M. Sperberg-McQueen">
1739      <organization>W3C</organization>
1740      <address>
1741        <email>cmsmcq@w3.org</email>
1742      </address>
1743    </author>
1744    <author initials="E." surname="Maler" fullname="Eve Maler">
1745      <organization>Sun Microsystems</organization>
1746      <address>
1747        <email>eve.maler@east.sun.com</email>
1748      </address>
1749    </author>
1750    <author initials="F." surname="Yergeau" fullname="Francois Yergeau">
1751      <organization/>
1752    </author>
1753    <date day="26" month="November" year="2008"/>
1754  </front>
1755  <seriesInfo name="W3C" value="REC-xml-20081126"/>
1756</reference>
1757</references>
1758
1759  <section title="RELAX NG Compact Schema" anchor="grammar">
1760  <iref item="Grammar" primary="true"/>
1761  <iref item="Schema" primary="true"/>
1762  <iref item="RELAX NG Compact Schema" primary="true"/>
1763  <t>
1764    The RelaxNG schema (<xref target="RNC"/>) below can be used to validate
1765    input documents (for instance, with <eref target="http://www.thaiopensource.com/relaxng/jing.html">Jing</eref>).
1766  </t>
1767  <t>
1768    <spanx>Note that this is work in progress, and doesn't yet cover all
1769    extensions completely.</spanx>
1770  </t>
1771  <figure>
1772    <artwork type="application/relax-ng-compact-syntax" name="rfc2629-ext.rnc" x:extraction-note="# Automatically extracted from rfc2629xslt.xml. DO NOT EDIT!&#10;">
1773<spanx># WORK IN PROGRESS! PLEASE REPORT PROBLEMS TO THE AUTHOR.</spanx>
1774
1775<spanx># Define our extension namespace</spanx>
1776namespace x = "http://purl.org/net/xml2rfc/ext"
1777
1778<spanx># Define GRDDL namespace</spanx>
1779namespace grddl = "http://www.w3.org/2003/g/data-view#"
1780
1781<spanx># Define RDF namespace</spanx>
1782namespace rdf = "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
1783
1784<spanx># Include rfc2629bis RNC grammar</spanx>
1785include "rfc2629.rnc" {
1786 
1787  <spanx># Redefine &lt;artwork> to allow markup</spanx>
1788  artwork =
1789    element artwork {
1790      attlist.artwork,
1791      (TEXT
1792        <spanx style="strong">| eref</spanx> 
1793        <spanx style="strong">| iref</spanx> 
1794        <spanx style="strong">| spanx</spanx> 
1795        <spanx style="strong">| xref</spanx>
1796        <spanx style="strong">| <x:ref>x_abnf-char-sequence</x:ref></spanx>
1797        <spanx style="strong">| <x:ref>x_bb</x:ref></spanx>
1798        <spanx style="strong">| <x:ref>x_bc</x:ref></spanx>
1799        <spanx style="strong">| <x:ref>x_bt</x:ref></spanx>
1800        <spanx style="strong">| <x:ref>x_highlight</x:ref></spanx>
1801        <spanx style="strong">| <x:ref>x_length-of</x:ref></spanx>
1802        <spanx style="strong">| <x:ref>x_parse-xml</x:ref></spanx>
1803        <spanx style="strong">| <x:ref>x_ref</x:ref></spanx>
1804        <spanx style="strong">| <x:ref>x_span</x:ref></spanx>
1805        <spanx style="strong">| <x:ref>x_x</x:ref></spanx>)*
1806    }
1807
1808  <spanx># Redefine &lt;back> to allow boilerplate</spanx>
1809  back =
1810    element back {
1811      attlist.back,
1812      references*,
1813      section*,
1814      <spanx style="strong"><x:ref>x_boilerplate</x:ref>?</spanx>
1815    }
1816
1817  <spanx># Redefine &lt;c> to allow our extension elements</spanx>
1818  c =
1819    element c {
1820      attlist.c,
1821      (TEXT
1822        | xref
1823        | eref
1824        | iref
1825        | cref
1826        | spanx
1827        <spanx style="strong">| <x:ref>x_ref</x:ref></spanx>)*
1828    }
1829
1830  <spanx># Redefine &lt;cref> to allow more child elements</spanx>
1831  cref =
1832    element cref {
1833      attlist.cref,
1834      (TEXT
1835        | eref
1836        | xref)*
1837    }
1838
1839  <spanx># Redefine &lt;front> to allow boilerplate</spanx>
1840  front =
1841    element front {
1842      attlist.front,
1843      title,
1844      author+,
1845      date,
1846      area*,
1847      workgroup*,
1848      keyword*,
1849      <spanx style="strong"><x:ref>x_boilerplate</x:ref>?,</spanx>
1850      abstract?,
1851      note*
1852    }
1853 
1854  <spanx># Redefine &lt;list> element to allow &lt;x:<x:ref>lt</x:ref>> child elements</spanx>
1855  \list =
1856    element list {
1857      attlist.list,
1858      (t+ <spanx style="strong">| <x:ref>x_lt</x:ref>+</spanx>)
1859    }   
1860   
1861  <spanx># Redefine &lt;preamble> to allow our extension elements</spanx>
1862  preamble =
1863    element preamble {
1864      attlist.preamble,
1865      (TEXT
1866        | xref
1867        | eref
1868        | iref
1869        | cref
1870        | spanx
1871        <spanx style="strong">| <x:ref>x_anchor-alias</x:ref></spanx>)*
1872    }
1873
1874  <spanx># Redefine &lt;postamble> to allow our extension elements</spanx>
1875  postamble =
1876    element postamble {
1877      attlist.postamble,
1878      (TEXT
1879        | xref
1880        | eref
1881        | iref
1882        | cref
1883        | spanx
1884        <spanx style="strong">| <x:ref>x_bcp14</x:ref></spanx>)*
1885    }
1886
1887  <spanx># Redefine &lt;reference> to allow our extension elements</spanx>
1888  reference =
1889    element reference {
1890      attlist.reference,
1891      front,
1892      seriesInfo*,
1893      format*,
1894      annotation*,
1895      <spanx style="strong"><x:ref>x_source</x:ref>?</spanx>
1896    }
1897
1898  <spanx># Redefine &lt;rfc> to allow our extension elements</spanx>
1899  rfc =
1900    element rfc {
1901      attlist.rfc,
1902      <spanx style="strong"><x:ref>x_link</x:ref>*,</spanx>
1903      <spanx style="strong"><x:ref>x_assign-section-number</x:ref>*,</spanx>
1904      front,
1905      middle,
1906      back?
1907    }
1908
1909  <spanx># Redefine &lt;section> to allow our extension elements</spanx>
1910  section =
1911    element section {
1912      attlist.section,
1913      (t
1914       | figure
1915       | texttable
1916       | iref
1917       | section
1918       <spanx style="strong">| <x:ref>x_anchor-alias</x:ref></spanx>
1919       <spanx style="strong">| <x:ref>x_blockquote</x:ref></spanx>
1920       <spanx style="strong">| <x:ref>x_include-author</x:ref></spanx>
1921       <spanx style="strong">| <x:ref>x_note</x:ref></spanx>
1922       <spanx style="strong">| <x:ref>rdf_Description</x:ref></spanx>)*
1923    }
1924
1925  <spanx># Redefine &lt;spanx> to allow some markup</spanx>
1926  spanx =
1927    element spanx {
1928      attlist.spanx,
1929      (TEXT
1930        <spanx style="strong">| iref</spanx>
1931        <spanx style="strong">| xref</spanx>
1932        <spanx style="strong">| <x:ref>x_ref</x:ref></spanx>)*
1933    }
1934
1935  <spanx># Redefine &lt;t> to allow our extension elements</spanx>
1936  t =
1937    element t {
1938      attlist.t,
1939      (TEXT
1940       | \list
1941       | figure
1942       | xref
1943       | eref
1944       | iref
1945       | cref
1946       | spanx
1947       | vspace
1948       <spanx style="strong">| <x:ref>x_abnf-char-sequence</x:ref></spanx>
1949       <spanx style="strong">| <x:ref>x_anchor-alias</x:ref></spanx>
1950       <spanx style="strong">| <x:ref>x_bcp14</x:ref></spanx>
1951       <spanx style="strong">| <x:ref>x_dfn</x:ref></spanx>
1952       <spanx style="strong">| <x:ref>x_h</x:ref></spanx>
1953       <spanx style="strong">| <x:ref>x_q</x:ref></spanx>
1954       <spanx style="strong">| <x:ref>x_ref</x:ref></spanx>
1955       <spanx style="strong">| <x:ref>x_sup</x:ref></spanx>)*
1956    }
1957}
1958
1959<spanx># Allow x:indent-with attribute on &lt;artwork></spanx>
1960attlist.artwork &amp;=
1961  attribute x:indent-with { ATEXT }?
1962
1963<spanx># Allow anchor attribute on &lt;author></spanx>
1964attlist.author &amp;=
1965  attribute anchor { xsd:ID }?
1966 
1967  <spanx># Extend attribute set for &lt;iref> (see <xref target="ext-rfc2629.iref"/>)</spanx>
1968attlist.iref &amp;=
1969  attribute x:for-anchor { ATEXT }?
1970
1971<spanx># Extend attribute set for &lt;list> (see <xref target="ext-rfc2629.list"/>)</spanx>
1972attlist.list &amp;=
1973  attribute x:indent { ATEXT }?
1974
1975<spanx># Extend attribute set for &lt;preamble></spanx>
1976attlist.preamble &amp;=
1977  attribute anchor { xsd:ID }?
1978
1979<spanx># Extend attribute set for &lt;rfc></spanx>
1980attlist.rfc &amp;=
1981  attribute grddl:transformation { ATEXT }?,
1982  attribute x:maturity-level { "proposed" | "draft" | "internet" }?
1983
1984<spanx># Extend attribute set for &lt;section> (see <xref target="ext-rfc2629.section"/>)</spanx>
1985attlist.section &amp;=
1986  attribute x:fixed-section-number { ATEXT }?
1987
1988<spanx># Allow anchor attribute on &lt;spanx></spanx>
1989attlist.spanx &amp;=
1990  attribute anchor { xsd:ID }?
1991
1992<spanx># Extend attribute set for &lt;xref> (see <xref target="ext-rfc2629.xref"/>)</spanx>
1993attlist.xref &amp;=
1994  attribute x:fmt  { "()" | "," | "anchor" | "of" | "number" | "sec" |
1995                     "none" }?,
1996  attribute x:rel  { ATEXT }?,
1997  attribute x:sec  { ATEXT }?
1998
1999<spanx anchor="x_abnf-char-sequence"><iref item="abnf-char-sequence Extension Element"/><iref item="Extension Elements" subitem="abnf-char-sequence"
2000/># Conversion to ABNF char sequence (see <xref target="ext.element.abnf-char-sequence"/>)</spanx>
2001<x:ref>x_abnf-char-sequence</x:ref> =
2002  element x:abnf-char-sequence {
2003    TEXT
2004  }
2005
2006<spanx anchor="x_anchor-alias"><iref item="anchor-alias Extension Element"/><iref item="Extension Elements" subitem="anchor-alias"
2007/># Aliasing of anchors (see <xref target="ext.element.anchor-alias"/>)</spanx>
2008<x:ref>x_anchor-alias</x:ref> =
2009  element x:anchor-alias {
2010    attribute value { TEXT },
2011    empty
2012  }
2013
2014<spanx anchor="x_include-author"><iref item="include-author Extension Element"/><iref item="Extension Elements" subitem="include-author"
2015/># Including Author information
2016# (experimental)</spanx>
2017<x:ref>x_include-author</x:ref> =
2018  element x:include-author {
2019    attribute target { xsd:IDREF }
2020  }
2021
2022<spanx anchor="x_assign-section-number"><iref item="assign-section-number Extension Element"/><iref item="Extension Elements" subitem="assign-section-number"
2023/># Setting section numbers for internally generated sections
2024# (experimental)</spanx>
2025<x:ref>x_assign-section-number</x:ref> =
2026  element x:assign-section-number {
2027    attribute builtin-target { "authors" },
2028    attribute number { TEXT },
2029    empty
2030  }
2031
2032<spanx anchor="x_bb"><iref item="bb Extension Element"/><iref item="Extension Elements" subitem="bb"
2033/># Bottom line of box drawing (see <xref target="ext.element.bb"/>)</spanx>
2034<x:ref>x_bb</x:ref> =
2035  element x:bb {
2036    (TEXT
2037      | iref
2038      | xref
2039      | <x:ref>x_bb</x:ref>
2040      | <x:ref>x_bc</x:ref>
2041      | <x:ref>x_bt</x:ref>
2042      | <x:ref>x_ref</x:ref>)*
2043  }
2044
2045<spanx anchor="x_bc"><iref item="bc Extension Element"/><iref item="Extension Elements" subitem="bc"
2046/># Center line of box drawing (see <xref target="ext.element.bc"/>)</spanx>
2047<x:ref>x_bc</x:ref> =
2048  element x:bc {
2049    (TEXT
2050      | iref
2051      | xref
2052      | <x:ref>x_bb</x:ref>
2053      | <x:ref>x_bc</x:ref>
2054      | <x:ref>x_bt</x:ref>
2055      | <x:ref>x_ref</x:ref>)*
2056  }
2057
2058<spanx anchor="x_bcp14"><iref item="bcp14 Extension Element"/><iref item="Extension Elements" subitem="bcp14"
2059/># BCP14/RFC2119 keywords (see <xref target="ext.element.bcp14"/>)</spanx>
2060<x:ref>x_bcp14</x:ref> =
2061  element x:bcp14 {
2062    "MAY"
2063    | "MUST"
2064    | "MUST NOT"
2065    | "NOT RECOMMENDED"
2066    | "OPTIONAL"
2067    | "RECOMMENDED"
2068    | "REQUIRED"
2069    | "SHALL"
2070    | "SHALL NOT"
2071    | "SHOULD"
2072    | "SHOULD NOT"
2073  }
2074 
2075<spanx anchor="x_blockquote"><iref item="blockquote Extension Element"/><iref item="Extension Elements" subitem="blockquote"
2076/># Blockquote (see <xref target="ext.element.blockquote"/>)</spanx>
2077<x:ref>x_blockquote</x:ref> =
2078  element x:blockquote {
2079    attribute cite { URI }?,
2080    t+
2081  }
2082
2083<spanx anchor="x_boilerplate"><iref item="boilerplate Extension Element"/><iref item="Extension Elements" subitem="boilerplate"
2084/># Boilerplate (see <xref target="ext.element.blockquote"/>) </spanx>
2085<x:ref>x_boilerplate</x:ref> =
2086  element x:boilerplate {
2087    section+
2088  }
2089
2090<spanx anchor="x_bt"><iref item="bt Extension Element"/><iref item="Extension Elements" subitem="bt"
2091/># Top line of box drawing (see <xref target="ext.element.bt"/>)</spanx>
2092<x:ref>x_bt</x:ref> =
2093  element x:bt {
2094    (TEXT
2095      | iref
2096      | xref
2097      | <x:ref>x_bb</x:ref>
2098      | <x:ref>x_bc</x:ref>
2099      | <x:ref>x_bt</x:ref>
2100      | <x:ref>x_ref</x:ref>)*
2101  }
2102
2103<spanx anchor="x_dfn"><iref item="dfn Extension Element"/><iref item="Extension Elements" subitem="dfn"
2104/># Definition (see <xref target="ext.element.dfn"/>)</spanx>
2105<x:ref>x_dfn</x:ref> =
2106  element x:dfn {
2107    attribute anchor { xsd:ID }?,
2108    (TEXT
2109      | iref)*
2110  }
2111 
2112<spanx anchor="x_h"><iref item="h Extension Element"/><iref item="Extension Elements" subitem="h"
2113/># Heading (see <xref target="ext.element.h"/>)</spanx>
2114<x:ref>x_h</x:ref> =
2115  element x:h {
2116    TEXT
2117  }
2118
2119<spanx anchor="x_highlight"><iref item="highlight Extension Element"/><iref item="Extension Elements" subitem="highlight"
2120/># Heading (see <xref target="ext.element.highlight"/>)</spanx>
2121<x:ref>x_highlight</x:ref> =
2122  element x:highlight {
2123    TEXT
2124  }
2125
2126<spanx anchor="x_length-of"><iref item="length-of Extension Element"/><iref item="Extension Elements" subitem="length-of"
2127/># Length Measurement (see <xref target="ext.element.length-of"/>)</spanx>
2128<x:ref>x_length-of</x:ref> =
2129  element x:length-of {
2130    attribute indented { NUMBER }?,
2131    attribute target { xsd:IDREF },
2132    empty
2133  }
2134
2135<spanx anchor="x_link"><iref item="link Extension Element"/><iref item="Extension Elements" subitem="link"
2136/># Link (see <xref target="ext.element.link"/>)</spanx>
2137<x:ref>x_link</x:ref> =
2138  element x:link {
2139    attribute href { URI },
2140    attribute title { TEXT }?,
2141    attribute rel { TEXT },
2142    empty
2143  }
2144 
2145<spanx anchor="x_lt"><iref item="lt Extension Element"/><iref item="Extension Elements" subitem="lt"
2146/># Extended list item (see <xref target="ext.element.lt"/>)</spanx>
2147<x:ref>x_lt</x:ref> =
2148  element x:lt {
2149    attribute anchor { xsd:ID }?,
2150    attribute hangText { TEXT }?,
2151    t+
2152  }
2153
2154<spanx anchor="x_note"><iref item="note Extension Element"/><iref item="Extension Elements" subitem="note"
2155/># Note (see <xref target="ext.element.note"/>)</spanx>
2156<x:ref>x_note</x:ref> =
2157  element x:note {
2158    t+
2159  }
2160
2161<spanx anchor="x_parse-xml"><iref item="parse-xml Extension Element"/><iref item="Extension Elements" subitem="parse-xml"
2162/># Signal XML content (see <xref target="ext.element.parse-xml"/>)</spanx>
2163<x:ref>x_parse-xml</x:ref> =
2164  element x:parse-xml {
2165    TEXT
2166  }
2167
2168<spanx anchor="x_q"><iref item="q Extension Element"/><iref item="Extension Elements" subitem="q"
2169/># Inline quote (see <xref target="ext.element.q"/>)</spanx>
2170<x:ref>x_q</x:ref> =
2171  element x:q {
2172    TEXT
2173  }
2174
2175<spanx anchor="x_ref"><iref item="ref Extension Element"/><iref item="Extension Elements" subitem="ref"
2176/># Anchor reference (see <xref target="ext.element.ref"/>)</spanx> 
2177<x:ref>x_ref</x:ref> =
2178  element x:ref {
2179    attribute anchor { xsd:ID }?,
2180    TEXT
2181  }
2182
2183<spanx anchor="x_source"><iref item="source Extension Element"/><iref item="Extension Elements" subitem="source"
2184/># source information (see <xref target="ext.element.source"/>)</spanx> 
2185<x:ref>x_source</x:ref> =
2186  element x:source {
2187    attribute basename { ATEXT }?,
2188    attribute href { URI },
2189    empty
2190  }
2191
2192<spanx anchor="x_sup"><iref item="sup Extension Element"/><iref item="Extension Elements" subitem="sup"
2193/># superscript (see <xref target="ext.element.sup"/>)</spanx>
2194<x:ref>x_sup</x:ref> =
2195  element x:sup {
2196    TEXT
2197  }
2198
2199<spanx anchor="x_span"><iref item="span Extension Element"/><iref item="Extension Elements" subitem="span"
2200/># Inline Span <!--(see <xref target="ext.element.span"/>)--></spanx>
2201<x:ref>x_span</x:ref> =
2202  element x:span {
2203    attribute anchor { xsd:ID }?,
2204    (TEXT
2205      | <x:ref>x_parse-xml</x:ref>)*
2206  }
2207
2208<spanx anchor="x_x"><iref item="x Extension Element"/><iref item="Extension Elements" subitem="x"
2209/># Nop (for alignment in source)</spanx>
2210<x:ref>x_x</x:ref> =
2211  element x:x {
2212    empty
2213  }
2214
2215<spanx anchor="rdf_Description"><iref item="rdf:Description Extension Element"/><iref item="Extension Elements" subitem="rdf:Description"
2216/># Embed RDF statements </spanx>
2217<x:ref>rdf_Description</x:ref> =
2218  element rdf:Description {
2219    rdf_content
2220  }
2221 
2222rdf_content =
2223  ( TEXT | element * { rdf_content })*
2224</artwork></figure>
2225  </section>
2226 
2227  <section title="Implementation Notes">
2228 
2229  <section title="Recognized type attributes for &lt;artwork> element">
2230  <t>
2231    Specific values in the &lt;artwork> element's "type" attribute are
2232    recognized and cause a different visual style to be used:
2233  </t>
2234  <texttable>
2235    <ttcol>Media Type</ttcol>
2236    <ttcol>Comment</ttcol>
2237   
2238    <c>abnf</c><c>ABNF as per <xref target="RFC5234"/></c>
2239    <c>abnf2616</c><c>ABNF as per <xref target="RFC2616" x:fmt="," x:sec="2.1" /></c>
2240    <c>application/relax-ng-compact-syntax</c><c>Relax NG Compact Syntax as per <xref target="RNC"/></c>
2241    <c>application/xml-dtd</c><c>XML DTD</c>
2242    <c>message/http; msgtype="request"</c><c>HTTP message, as per <xref target="RFC2616" x:fmt="," x:sec="19.1" /></c>
2243    <c>message/http; msgtype="response"</c><c>HTTP message, as per <xref target="RFC2616" x:fmt="," x:sec="19.1" /></c>
2244  </texttable>
2245  </section>
2246 
2247  </section>
2248 
2249  <section title="Examples" anchor="examples">
2250
2251  <section title="Using the 'Internal Subset'" anchor="examples.internalsubset">
2252  <t>
2253    The prolog of the XML document can both be used to refer to an external
2254    DTD, and also to define internal entities (<xref target="XML" x:fmt="of" x:sec="2.8" x:rel="#sec-prolog-dtd"/>):
2255  </t>
2256  <figure><artwork type="example">
2257&lt;?xml version="1.0"?>
2258&lt;?xml-stylesheet type='text/xsl' href='rfc2629.xslt' ?>
2259
2260&lt;!DOCTYPE rfc SYSTEM "rfc2629.dtd" [
2261
2262  &lt;!-- <spanx>use "&amp;MAY;" for a BCP 14 "MAY", see <xref target="ext.element.bcp14"/></spanx> -->
2263  &lt;!ENTITY MAY
2264  "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'>MAY&lt;/bcp14>">
2265
2266  &lt;!-- <spanx>re-declare "&amp;nbsp;" as code point 160 (non-breaking space)</spanx> -->
2267  &lt;!-- <spanx>you may need this for UAs that do not read external DTDs</spanx> -->
2268  &lt;!ENTITY nbsp
2269  "&amp;#160;">
2270
2271  &lt;!-- <spanx>allow later RFC2616 reference using "&amp;rfc2616;"</spanx> -->
2272  "http://xml.resource.org/public/rfc/bibxml/reference.RFC.2616.xml">
2273
2274]>
2275</artwork>
2276<postamble>
2277  Note: including entities from a remote site will not work in Firefox,
2278  see <eref target="https://bugzilla.mozilla.org/show_bug.cgi?id=22942"/>.</postamble>
2279</figure>
2280 
2281  </section>
2282
2283  <section title="Customization" anchor="examples.customizing">
2284  <t>
2285    The XSLT code can be customized by creating a custom XSLT file that
2286    uses &lt;xsl:import> to include the original code, and just overrides
2287    particular rules.
2288  </t>
2289  <figure>
2290  <preamble>For instance, the code below overrides several attributes in
2291  <spanx style="verb">rfc2629toFO.xslt</spanx>, changing the color, spacing and font family for
2292  headers.</preamble>
2293  <artwork type="example">
2294&lt;xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
2295               version="1.0">
2296
2297  &lt;xsl:import href="rfc2629toFO.xslt"/>
2298 
2299  &lt;xsl:attribute-set name="h1">
2300    &lt;xsl:attribute name="color">darkblue&lt;/xsl:attribute>
2301    &lt;xsl:attribute name="font-family">sans-serif&lt;/xsl:attribute>
2302    &lt;xsl:attribute name="space-before">24pt&lt;/xsl:attribute>
2303  &lt;/xsl:attribute-set>
2304 
2305  &lt;xsl:attribute-set name="h2">
2306    &lt;xsl:attribute name="color">darkblue&lt;/xsl:attribute>
2307    &lt;xsl:attribute name="font-family">sans-serif&lt;/xsl:attribute>
2308    &lt;xsl:attribute name="space-before">18pt&lt;/xsl:attribute>
2309    &lt;xsl:attribute name="space-after">3pt&lt;/xsl:attribute>
2310  &lt;/xsl:attribute-set>
2311 
2312  &lt;xsl:attribute-set name="h3">
2313    &lt;xsl:attribute name="color">darkblue&lt;/xsl:attribute>
2314    &lt;xsl:attribute name="font-family">sans-serif&lt;/xsl:attribute>
2315    &lt;xsl:attribute name="space-before">16pt&lt;/xsl:attribute>
2316    &lt;xsl:attribute name="space-after">2pt&lt;/xsl:attribute>
2317  &lt;/xsl:attribute-set>
2318
2319&lt;/xsl:transform>
2320</artwork></figure>
2321<x:note>
2322  <t>
2323    <x:h>Note:</x:h> the name for the attribute sets may change in the future
2324    as more working is done with respect to customizability. In any case,
2325    overriding the settings in a separate file will be easier to maintain.
2326    Please contact the author if you find yourself trying to override style
2327    definitions that currently do not use attribute sets.
2328  </t>
2329  <t>
2330    <x:h>Note:</x:h> the CSS style information used in <spanx style="verb">rfc2629.xslt</spanx>
2331    can be overriden in a similar (but less granular) way: just overwrite the
2332    template called "insertCss". As for XSL-FO, the class names may change in
2333    future.
2334  </t>
2335</x:note>
2336
2337
2338  </section>
2339
2340  </section>
2341 
2342  <section title="License" anchor="license">
2343  <t>
2344Copyright (c) 2006-2009, Julian Reschke (julian.reschke@greenbytes.de)
2345  </t>
2346  <t>
2347All rights reserved.
2348  </t>
2349  <t>
2350Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
2351  <list style="symbols">
2352    <t>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</t>
2353    <t>Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.</t>
2354    <t>Neither the name of Julian Reschke nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.</t>
2355  </list>
2356  </t>
2357  <t>
2358THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2359  </t>
2360  </section>
2361
2362  <section title="Change Logs">
2363   
2364 
2365    <section title="Package">
2366      <t><list style="hanging">
2367<t hangText="2006-01-01">
2368    Switch to BSD License.
2369</t>
2370<t hangText="2007-01-12">
2371    Update to xml2rfc v1.33pre2.
2372</t>
2373<t hangText="2007-03-31">
2374    Update to xml2rfc v1.33pre3.
2375</t>
2376<t hangText="2007-05-01">
2377    Add XSLT test cases.
2378</t>
2379<t hangText="2008-07-18">
2380    Experimental support for inlined rdf:Description elements (ignored
2381    by the formatter, extracted by rfc2629grddl).
2382</t>
2383<t hangText="2008-12-04">
2384    Update to xml2rfc v1.34pre2.
2385</t>
2386<t hangText="2009-02-24">
2387    Experimental support for February 2009 boilerplate changes, and for
2388    the x:boilerplate element.
2389</t>
2390<t hangText="2009-07-08">
2391    Support new boilerplate ordering in RFCs published since July 2009.
2392    Fix problems with one-column text tables.
2393</t>
2394<t hangText="2009-07-19">
2395    When possible, calculate the actual Expiry date for Internet Drafts
2396    (full date must be available).
2397</t>
2398<t hangText="2009-08-01">
2399    For '$xml2rfc-ext-authors-section='end'", move the index in front of the
2400    authors section.
2401</t>
2402<t hangText="2009-08-04">
2403    Consider /rfc/@ipr="pre5378Trust200902" when producing RFCs, not IDs.
2404</t>
2405<t hangText="2009-08-29">
2406    Support alignment for artwork containing images (as opposed to, well,
2407    artwork).
2408</t>
2409<t hangText="2009-09-01">
2410    Allow xref in cref (as extension).
2411</t>
2412<t hangText="2009-09-14">
2413    Refactor handling of processing instructions.
2414</t>
2415<t hangText="2009-09-24">
2416    Fix typo in Status Of This Memo, present since November 2008.
2417                Fix formatting of iprExtract attribute.
2418                Starting with Internet Draft publication dates after 2009-11-30: use new Trust
2419                Legal Provisions text; for Internet Drafts: move Abstract up, and
2420                move "pre5378" escape clause to the Copyright Notice.
2421                Add support for refparent PI. For RFCs: use new TLP text as of September 2009.
2422    Incorporate xml2rfc v1.34pre4.
2423</t>
2424<t hangText="2009-10-06">
2425                Starting with Internet Draft publication dates after 2009-10-31: use new Trust
2426                Legal Provisions text; for Internet Drafts: move Abstract up, and
2427                move "pre5378" escape clause to the Copyright Notice.
2428    Incorporate xml2rfc v1.34pre5.
2429</t>
2430<t hangText="2009-10-27">
2431    Upgrade to xml2rfc v1.34.
2432</t>
2433      </list></t>
2434    </section>
2435   
2436    <section title="amazon-asin.xslt">
2437    <t><list style="hanging">
2438<t hangText="2003-11-16">
2439     Initial release.
2440</t>
2441<t hangText="2005-04-02">
2442     Fix two DTD issues.
2443</t>
2444    </list></t>
2445    </section>
2446
2447    <section title="check-references.xslt">
2448    <t><list style="hanging">
2449<t hangText="2003-11-16">
2450     Initial release.
2451</t>
2452<t hangText="2004-05-11">
2453     Add document status; print references type.
2454</t>
2455<t hangText="2005-01-01">
2456     Add experimental check for ID status.
2457</t>
2458<t hangText="2005-04-01">
2459     Add fixes from Bill Fenner.
2460</t>
2461<t hangText="2005-12-03">
2462    Add checks against local copy of <eref target="http://www.w3.org/2002/01/tr-automation/tr.rdf"/>
2463</t>
2464<t hangText="2006-07-22">
2465    Add checks for standards levels.
2466</t>
2467<t hangText="2006-08-06">
2468    "check-ietf-references.xslt" replaced by "check-references.xslt".
2469</t>
2470<t hangText="2007-01-04">
2471    Use information online at <eref target="http://tools.ietf.org/"/> to
2472    retrieve Internet-Draft status information.
2473</t>
2474<t hangText="2007-06-16">
2475    Fix bug looking up ref type when inside change markup.
2476</t>
2477<t hangText="2008-06-14">
2478    Enhance output when draft was updated, and then published as RFC.
2479</t>
2480<t hangText="2008-07-12">
2481    Add XSLT2-based link target checking.
2482</t>
2483<t hangText="2008-08-10">
2484    Change keywords for "intended-level" to proposed/draft/internet,
2485    optionally extract intended level from /rfc/@x:maturity-level attribute.
2486</t>
2487    </list></t>
2488    </section>
2489   
2490    <section title="gen-reference-graph.xslt">
2491    <t><list style="hanging">
2492<t hangText="2006-09-03">
2493  New.
2494</t>
2495<t hangText="2007-06-07">
2496  Use <eref target="http://dpcarlisle.blogspot.com/2007/05/exslt-node-set-function.html">Carlisle method</eref> to define exslt:node-set in
2497  msxsml (which means that the stylesheet can now be used with MSXML as well).
2498</t>
2499<t hangText="2007-10-15">
2500  Use W3C data from tr.rdf as well (experimental).
2501</t>
2502    </list></t>
2503    </section>
2504
2505    <section title="rfc2629.xslt">
2506      <t><list style="hanging">
2507<t hangText="2001-03-28">
2508    Code rearranged, generate numbered section anchors for paragraphs (t)
2509    as well. Fixes in index handling.
2510</t>
2511<t hangText="2001-04-12">
2512    Moved HTML output into XHTML namespace.
2513</t>
2514<t hangText="2001-10-02">
2515    Fixed default location for RFCs and numbering of section references.
2516    Support ?rfc editing processing instruction.
2517</t>
2518<t hangText="2001-10-07">
2519    Made telephone number links active.
2520</t>
2521<t hangText="2001-10-08">
2522    Support for vspace element.
2523</t>
2524<t hangText="2001-10-09">
2525    Experimental support for rfc-issue PI.
2526</t>
2527<t hangText="2001-11-11">
2528    Support rfc private PI. Removed bogus code reporting the WG in the header.
2529</t>
2530<t hangText="2001-11-11">
2531    Support rfc private PI. Removed bogus code reporting the WG in the header.
2532</t>
2533<t hangText="2001-12-17">
2534    Support title attribute on references element
2535</t>
2536<t hangText="2002-01-05">
2537    Support for list/@style="@format"
2538</t>
2539<t hangText="2002-01-09">
2540    Display "closed" RFC issues as deleted
2541</t>
2542<t hangText="2002-01-14">
2543    Experimentally and optionally parse XML encountered in artwork elements
2544    (requires MSXSL).
2545</t>
2546<t hangText="2002-01-27">
2547    Some cleanup. Moved RFC issues from PIs into namespaced elements.
2548</t>
2549<t hangText="2002-01-29">
2550    Added support for sortrefs PI. Added support for figure names.
2551</t>
2552<t hangText="2002-02-07">
2553    Highlight parts of artwork which are too wide (72 characters).
2554</t>
2555<t hangText="2002-02-12">
2556    Code rearrangement for static texts. Fixes for section numbering.
2557    TOC generation rewritten.
2558</t>
2559<t hangText="2002-02-15">
2560    Support for irefs in sections; support iref @primary=true
2561</t>
2562<t hangText="2002-03-03">
2563    Moved anchor prefix into a constant. Added sanity checks on user anchor
2564    names.
2565</t>
2566<t hangText="2002-03-23">
2567    Bugfix in detection of matching org names when creating the header. Fixed
2568    sorting in subitems.
2569</t>
2570<t hangText="2002-04-02">
2571    Fix TOC link HTML generation when no TOC is generated (created broken
2572    HTML table code).
2573</t>
2574<t hangText="2002-04-03">
2575    Made rendering of references more tolerant re: missing parts.
2576</t>
2577<t hangText="2002-04-08">
2578    Fixed reference numbering when references are split into separate sections.
2579</t>
2580<t hangText="2002-04-16">
2581    Fix default namespace (shouldn't be set for HTML output method).
2582</t>
2583<t hangText="2002-04-19">
2584    Lowercase internal CSS selectors for Mozilla compliance. Do not put TOC
2585    into ul element.
2586</t>
2587<t hangText="2002-04-21">
2588    Make numbered list inside numbered lists use alphanumeric numbering.
2589</t>
2590<t hangText="2002-05-05">
2591    Updated issue/editing support.
2592</t>
2593<t hangText="2002-05-15">
2594    Bugfix for section numbering after introduction of ed:replace
2595</t>
2596<t hangText="2002-06-21">
2597    When producing private documents, do not include document status, copyright etc.
2598</t>
2599<t hangText="2002-07-08">
2600    Fix xrefs to Appendices.
2601</t>
2602<t hangText="2002-07-19">
2603    Make artwork lightyellow for easier reading. (fielding)
2604</t>
2605<t hangText="2002-10-09">
2606    Translate references title to anchor name to avoid non-uri characters. (fielding)
2607</t>
2608<t hangText="2002-10-13">
2609    Support for tocdepth PI.
2610</t>
2611<t hangText="2002-11-03">
2612    Added temporariry workaround for Mozilla/Transformiix result tree fragment problem.
2613    (search for 'http://bugzilla.mozilla.org/show_bug.cgi?id=143668')
2614</t>
2615<t hangText="2002-12-25">
2616    xref code: attempt to uppercase "section" and "appendix" when at the start
2617    of a sentence.
2618</t>
2619<t hangText="2003-02-02">
2620    fixed code for vspace blankLines="0", enhanced display for list with "format" style,
2621    got rid of HTML blockquote elements, added support for "hangIndent"
2622</t>
2623<t hangText="2003-04-10">
2624    experimental support for appendix and spanx elements
2625</t>
2626<t hangText="2003-04-19">
2627    fixed counting of list numbers in "format %" styles (one counter
2628    per unique format string). Added more spanx styles.
2629</t>
2630<t hangText="2003-05-02">
2631    experimental texttable support
2632</t>
2633<t hangText="2003-05-02">
2634    Make mailto links optional (default = none) (jre: default and PI name changed) (fielding)
2635</t>
2636<t hangText="2003-05-04">
2637    experimental support for HTML link elements; fix default for table header
2638    alignment default
2639</t>
2640<t hangText="2003-05-06">
2641    support for "background" PI.
2642</t>
2643<t hangText="2003-05-11">
2644    change %c format to lowercase alphabetic. add support for keyword
2645    elements (generate META tag). fix various HTML conformance problems.
2646    added experimental support for role attribute. do not number paragraphs
2647    in unnumbered sections. update boilerplate texts. support for
2648    "iprnotified" PI. bugfix list numbering. strip whitespace when
2649    building tel: URIs.
2650</t>
2651<t hangText="2003-05-12">
2652    more conformance fixes (layout moved into CSS, move lists and figures
2653    out of para content, do not use tables for list formatting)
2654</t>
2655<t hangText="2003-05-13">
2656    add DC.Creator meta tag, refactoring
2657</t>
2658<t hangText="2003-05-16">
2659    put nbsps between "section" and section number (xref).
2660</t>
2661<t hangText="2003-05-18">
2662    author summary: add missing comma.
2663</t>
2664<t hangText="2003-06-06">
2665    fix index generation bug (transposed characters in key generation). Enhance
2666    sentence start detection (xref starting a section was using lowercase
2667    "section").
2668</t>
2669<t hangText="2003-06-22">
2670    exp. support for xref/@format. Add missing support for eref w/o content.
2671    exp. support for annotations in reference elements. Code cleanup
2672    reference table formatting.
2673</t>
2674<t hangText="2003-07-09">
2675    Another fix for DC.Creator meta tag creation based on RFC2731
2676</t>
2677<t hangText="2003-07-24">
2678    Fix namespace name for DC.Creator.
2679</t>
2680<t hangText="2003-08-06">
2681    Cleanup node-set support (only use exslt (saxon, xalan, libxslt) extension
2682    functions; remove Transformix workarounds that stopped to work in Moz 1.4)
2683</t>
2684<t hangText="2003-08-09">
2685    Generate HTML lang tag.
2686</t>
2687<t hangText="2003-08-10">
2688    Map spanx/verb to HTML "samp" element. Fix author name display in
2689    references (reverse surname/initials for last author), add "Ed.".
2690    Fix internal bookmark generation.
2691</t>
2692<t hangText="2003-08-17">
2693    Add DCMI dates, identifiers and abstract. Add PI to suppress DCMI
2694    generation.  Do not add TOC entry to Copyright Statement when there is
2695    none. Align RFC2629 PI names and parameter names. Change style for
2696    inline URIs generated by eref. Add header and footer support.
2697    Enhance CSS paging properties. Support topblock PI. Added hooks for
2698    proper XHTML generation through separate XSLT. Enhance warning and
2699    error messages. Add support for artwork image display. Table formatting
2700    fixes (borders, thead continuation).
2701</t>
2702<t hangText="2003-08-18">
2703    Add workaround for MSXML4 node-set and Mozilla node-set issues (fallback
2704    just displays are warning).
2705</t>
2706<t hangText="2003-10-06">
2707    Add workaround for broken pre/ins handling in Mozilla
2708    (see <eref target="http://bugzilla.mozilla.org/show_bug.cgi?id=204401"/>). Make use
2709    of cite attribute on ed:replace. CSS cleanup.
2710</t>
2711<t hangText="2003-10-08">
2712    Fix minor issue detecting the same org for the header (caused by IE's
2713    non-standard whitespace handling). Fix default handling for /rfc/@category.
2714</t>
2715<t hangText="2003-11-09">
2716    Inherit ed:entered-by from ancestor elements. Change CSS color for inserted
2717    text to green. Generate issues-list anchor. Do not complain about missing
2718    targets when the xref element is below ed:del. Remove code that attempted
2719    to distinguish section/Section when producing links - always use
2720    uppercase. Fix date rendering for issue resolutions.
2721</t>
2722<t hangText="2003-11-29">
2723    Fix color values for table backgrounds for issue rendering. Change
2724    rendering of issue links to use inline-styles. Add colored issue markers to
2725    issues.
2726</t>
2727<t hangText="2003-12-13">
2728    Fix inheritance of ed:entered-by attribute. Display note elements inside
2729    change tracking as well.
2730</t>
2731<t hangText="2004-01-18">
2732    When PI compact = 'yes', make most CSS print page breaks conditional.
2733</t>
2734<t hangText="2004-02-20">
2735    Support for RFC3667 IPR changes (xml2rfc 1.22); see
2736    <eref target="http://lists.xml.resource.org/pipermail/xml2rfc/2004-February/001088.html"/>.
2737</t>
2738<t hangText="2004-03-11">
2739    Add "(if approved)" to "updates" and "obsoletes" unless the document has
2740    an RFC number.
2741</t>
2742<t hangText="2004-04-01">
2743    Fix RFC3667 output, see <eref target="http://lists.xml.resource.org/pipermail/xml2rfc/2004-April/001208.html"/>.
2744</t>
2745<t hangText="2004-04-04">
2746    Add support for section/top attribute. Move references into plain
2747    section container.
2748</t>
2749<t hangText="2004-04-06">
2750    Do not emit identical para anchors for deleted content.
2751</t>
2752<t hangText="2004-04-14">
2753    Fix references TOC generation when there are no references.
2754</t>
2755<t hangText="2004-04-24">
2756    Fix RFC3667 output, see <eref target="http://xml.resource.org/pipermail/xml2rfc/2004-April/001246.html"/>.
2757</t>
2758<t hangText="2004-05-09">
2759    Add custom support for generating compound index documents. Add anchors
2760    for each Index letter. Add experimental cref support. Fix conditional page
2761    breaks before References section.
2762</t>
2763<t hangText="2004-05-16">
2764    Refactor external index generation.
2765</t>
2766<t hangText="2004-05-20">
2767    Rewrite anchor generation for comments.
2768</t>
2769<t hangText="2004-05-22">
2770    Enhance issues rendering (add links to changes).
2771</t>
2772<t hangText="2004-05-30">
2773    Allow single quote as delimiter in processing instructions as well. Move
2774    block-level issue pointers to floats. Disable issue pointers for print
2775    media. Add "purple numbers". Add hrefs to section headings. Add non-printing
2776    index key letter list to start of index.
2777</t>
2778<t hangText="2004-06-01">
2779    Use &amp;#xb6; instead of # for PNs.
2780</t>
2781<t hangText="2004-07-18">
2782    Add support for list style=letters (thanks Roy F.). Make PNs optional;
2783    add new PI.
2784</t>
2785<t hangText="2004-09-05">
2786    Fix index links into unnumbered sections.  Bring IPR boilerplate in-line
2787    with xml2rfc 1.25.  Add experimental CSS3 paged media support.  Various
2788    HTML fixes.
2789</t>
2790<t hangText="2004-09-21">
2791    Enhance checking of artwork width.
2792</t>
2793<t hangText="2004-09-26">
2794    Add check for unused references. Uppercase letters in list style letters
2795    when nested into another list.
2796</t>
2797<t hangText="2004-10-10">
2798    Fix internal change track pointers.
2799</t>
2800<t hangText="2004-11-01">
2801    Allow change tracking on references (as a whole).  Rewrite artwork handling
2802    so that it allows change tracking inside artwork.  Also allow a subset of
2803    text markup inside artwork, such as xrefs (note this requires post-processing
2804    the source to make it compliant to RFC2629bis).
2805</t>
2806<t hangText="2004-11-03">
2807    Enhanced placement of iref anchors.
2808</t>
2809<t hangText="2004-11-06">
2810    Index: display irefs that appeared (with primary=true) inside artwork elements
2811    in a monospaced font.
2812</t>
2813<t hangText="2004-11-14">
2814    Add special code so that changes in section titles can be change-tracked.
2815</t>
2816<t hangText="2005-01-14">
2817    Bugfixes for HtmlToXhtml converter.
2818</t>
2819<t hangText="2005-01-22">
2820    Enhance generation of HTML h* elements (for Mozilla Outliner).
2821</t>
2822<t hangText="2005-01-31">
2823    Put vertical space around top-level TOC entries in TOC.  Switch to
2824    pt-based CSS. Re-arrange top section. Make hr elements reflect new-page
2825    settings in TXT output (compact-PI).  Fix page number in footer (CSS
2826    print) and add some more experimental support for paged media (tested
2827    with Prince 4.1 alpha).  Rewrite TOC and Index generation to generate HTML
2828    lists.  Cleanup id generation for paragraphs.  Reduce whitespace in output.
2829    Fix vspace implementation. Use right/left dqoutes and copyright sign
2830    where appropriate.
2831</t>
2832<t hangText="2005-02-04">
2833    Add &lt;link> element to references section.  Fix newly introduced bug
2834    in references processing.
2835</t>
2836<t hangText="2005-02-05">
2837    Integrate various fixes/enhancements by Roy Fielding: spelling of
2838    "Authors' Addresses", comma setting in references, position of "Authors"
2839    section, optionally place authors addresses at end (PI), trailing dots
2840    in section numbers, switch to verdana default font in CSS.  Add
2841    experimental support for centered artwork.
2842</t>
2843<t hangText="2005-02-09">
2844    Fixes in spacing and links of references section titles.  Enhance sorting
2845    in references when change tracking is in place.  Re-add figure centering
2846    support.  Add missing 2nd part of "Author's Adresses" fix.
2847</t>
2848<t hangText="2005-02-25">
2849    Align section number format with xml2rfc1.29.
2850</t>
2851<t hangText="2005-03-28">
2852    Get rid of table elements in Author's section.  Add experimental hCard
2853    (<eref target="http://developers.technorati.com/wiki/hCard"/>) support.
2854</t>
2855<t hangText="2005-04-03">
2856    Add RFC3978-style IPR statement support. (fenner@research.att.com)
2857</t>
2858<t hangText="2005-04-11">
2859    Cleanup author display. hCard related fixes.
2860</t>
2861<t hangText="2005-05-07">
2862    Minor fixes to allow change tracking in doc title.  Add experimental
2863    support for table border styles. CSS cleanup.
2864</t>
2865<t hangText="2005-06-18">
2866    Implement missing support for references to texttables.
2867</t>
2868<t hangText="2005-09-25">
2869    Use (-moz-)column-count when printing the index.
2870</t>
2871<t hangText="2005-10-04">
2872    Report missing element templates with xsl:message.
2873</t>
2874<t hangText="2005-10-15">
2875    Process t/@anchor.
2876</t>
2877<t hangText="2005-10-23">
2878    More workarounds for Mozilla's broken del/ins handling (this time for
2879    figures).
2880</t>
2881<t hangText="2005-10-27">
2882    lowercase hCard class names
2883</t>
2884<t hangText="2005-11-22">
2885    Enhance diagnostics for XML-in-artwork extension
2886</t>
2887<t hangText="2005-11-26">
2888    Fix formatting of section numbers for sections inserted into &lt;back>.
2889</t>
2890<t hangText="2005-12-12">
2891    Fix some validity problems when change tracking occured inside lists.
2892</t>
2893<t hangText="2005-12-18">
2894    Add change tracking inside the index.
2895</t>
2896<t hangText="2006-02-04">
2897    Add prev/next links to highlighted changes (change tracking extension).
2898</t>
2899<t hangText="2006-02-10">
2900    Catch errors instantiating MSXML component.
2901</t>
2902<t hangText="2006-02-11">
2903    References: add "work in progress" for Internet Drafts.
2904</t>
2905<t hangText="2006-02-27">
2906    Fix front matter (lowercase Internet-Draft, say "Intended status" for
2907    non-RFC documents). Start work on experimental extension for 
2908    simplified internal links.
2909</t>
2910<t hangText="2006-03-19">
2911    Tweaks to IESG Copyright stuff; support submissionType attribute.
2912    Fix duplicate reference anchors in HTML output.  Reduce HTML Tidy warnings.
2913    Fix reference to normative ASCII version (now requires trailing ".txt").
2914    Tweaks to hCard generation.  Started to move non-issue-tracking
2915    extensions into namespace "http://purl.org/net/xml2rfc/ext".
2916</t>
2917<t hangText="2006-03-27">
2918    Moved "simple reference" extension into namespace "http://purl.org/net/xml2rfc/ext"
2919    and add documentation.  HTML conformance enhancements.
2920</t>
2921<t hangText="2006-04-02">
2922    Cleanup special code for automated XHTML XSLT generation.
2923</t>
2924<t hangText="2006-04-21">
2925    Generate &lt;CITE> elements where appropiate.
2926    Introduce x:blockquote, x:dfn, x:h and x:q elements.
2927</t>
2928<t hangText="2006-05-06">
2929    Introduce x:bcp14 element.
2930</t>
2931<t hangText="2006-05-14">
2932  Fix content model for x:blockquote.
2933</t>
2934<t hangText="2006-06-18">
2935  Add box drawing support (x:bt, x:bc, x:bb).
2936</t>
2937<t hangText="2006-06-20">
2938  HTML validity fixes (legal chars in anchors in index).
2939</t>
2940<t hangText="2006-06-24">
2941  Reduce leading empty lines in artwork. Move &lt;dt> style info into CSS.
2942</t>
2943<t hangText="2006-07-14">
2944  Fix rendering of multiple street address entries (missing line break).
2945</t>
2946<t hangText="2006-07-24">
2947  Add extension for deep linking into RFCs, do not generate empty list
2948  items in TOC output, avoid empty &lt;dt> elements for list items
2949  without hangText attribute.
2950</t>
2951<t hangText="2006-08-01">
2952  Allow @anchor on more elements; start work on Relax NG grammar for
2953  extensions. Reduce generated style elements (use CSS classes instead).
2954  Consistently use "id" instead of "name". Change default target for RFC
2955  links to "http://tools.ietf.org/html/rfcNNNN".
2956</t>
2957<t hangText="2006-08-06">
2958  Include appendices defined in &lt;appendix> elements in TOC (please
2959  consider them deprecated anyhow!). Generate links to
2960  "http://tools.ietf.org/html/draft-*" for Internet Drafts.
2961  Replace x:frag by x:rel, allowing any kind of relative reference instead
2962  of just fragments.
2963</t>
2964<t hangText="2006-08-30">
2965  Reduce textual differences between HTML output and what xml2rfc produces
2966  in TXT output mode (section refs/reference targets). Add small workaround
2967  for Opera 9.0.1's problem with node-set().
2968</t>
2969<t hangText="2006-10-29">
2970  Fix problem generating internal links to change markup within references
2971  section. Enhancements when generating numbered references for deleted
2972  references.
2973  Allow inclusion of references into the index (through include-references-in-index
2974  extension).
2975  Fix a bug that caused the newer version of the IETF boilerplate to be
2976  produced rather than the pre-RFC3667 one.
2977  Update to RFC4287 boilerplate.
2978</t>
2979<t hangText="2006-11-11">
2980  Add extension attribute x:for-anchor to &lt;iref&gt; handling.
2981</t>
2982<t hangText="2006-11-26">
2983  Experimental (and limited) support for &lt;x:lt&gt;.
2984</t>
2985<t hangText="2006-12-04">
2986  Fix bugs in processing documents that have both the ipr and the number attribute
2987  set on the rfc root element. Add support for x:fmt='none' on xrefs.
2988  Add different pre style based on artwork type attributes (experimental).
2989</t>
2990<t hangText="2006-12-13">
2991  Add x:fmt='anchor' for xref elements.
2992</t>
2993<t hangText="2007-01-07">
2994  Fix root template for compatibility for the exslt:node-set implementation
2995  in Firefox3.
2996</t>
2997<t hangText="2007-01-29">
2998  Avoid empty table entry in front matter when organization is not specified
2999  for an author.
3000</t>
3001<t hangText="2007-02-10">
3002  Allow change tracking in table rows.
3003</t>
3004<t hangText="2007-03-09">
3005  Add hcard profile URI (<eref target="http://www.w3.org/2006/03/hcard"/>) to head element.
3006  Add warning for misplaced &lt;t> elements (after section).
3007</t>
3008<t hangText="2007-03-21">
3009  Fix internal linking from reference entries in index for some xref types.
3010  Minor CSS tweaks contributed by MTR. Allow turning on text justification through
3011  a PI. Improve iref anchor generation to generate less instable anchors.
3012</t>
3013<t hangText="2007-03-28">
3014  Fixes for numbering of ed:inserted references sections.
3015</t>
3016<t hangText="2007-05-04">
3017  Do not generate anchors for edits in deleted sections. Enhance HTML
3018  conformance.
3019</t>
3020<t hangText="2007-05-19">
3021  Enhance diagnostics when using Saxon (needs Saxon's "-l" command line
3022  parameter to keep line number information). Add warning when symref PI
3023  is missing (default will change in the future).
3024  Add support for overriding computed section numbers (when formatting
3025  historic documents).
3026</t>
3027<t hangText="2007-06-07">
3028  Change default for symrefs PI to "yes" (see change in xml2rfc 1.33pre4).
3029  Warn about docName attributes that appear to contain a file extension.
3030</t>
3031<t hangText="2007-06-26">
3032  Workaround author/@initials values without trailing dot, as in xml2rfc.tcl.
3033</t>
3034<t hangText="2007-07-14">
3035  Enhance index generation for references that use @x:sec attribute.
3036</t>
3037<t hangText="2007-09-09">
3038  Fix: sortrefs is a nop when symrefs=no.
3039</t>
3040<t hangText="2007-10-17">
3041  Work in progress: add support for referencing sections in sibling
3042  documents by anchor name.
3043</t>
3044<t hangText="2007-10-17">
3045  Work in progress (continued): support for referencing sections in sibling
3046  documents by anchor name.
3047</t>
3048<t hangText="2007-12-31">
3049  Emit warning when updating/obsoleting stuff that's not referenced.
3050</t>
3051<t hangText="2008-02-03">
3052  Support xml2rfc-1.33pre5's suppress-title attribute on texttable and figure.
3053</t>
3054<t hangText="2008-02-06">
3055  Extension: allow &lt;eref> below &lt;cref>.
3056</t>
3057<t hangText="2008-02-17">
3058  Extensions: add x:span and x:length-of.
3059</t>
3060<t hangText="2008-02-20">
3061  Add new RFC boilerplate (as changed in 2007-08).
3062</t>
3063<t hangText="2008-02-27">
3064  Improve diagnostics for artwork width problems; add defaulting of publication
3065  dates (requires XSLT processor supporting exslt:date, or msxml).
3066</t>
3067<t hangText="2008-02-29">
3068  Enhance CSS for link elements in the front header, update rules for
3069  generating "Acknowledgment" statement.
3070</t>
3071<t hangText="2008-03-01">
3072  Use line numbers in diagnostics in Saxon8/9 as well.
3073</t>
3074<t hangText="2008-03-02">
3075  Fix a bug in the logic choosing the boilerplate, resulting in obsolete
3076  text being inserted into IDs.
3077</t>
3078<t hangText="2008-04-01">
3079  Add support for superscript element.
3080</t>
3081<t hangText="2008-06-28">
3082  Add sanity checks for email addresses, allow multiple email elements.
3083</t>
3084<t hangText="2008-07-06">
3085  Add x:abnf-char-sequence.
3086</t>
3087<t hangText="2008-08-21">
3088  Add x:note.
3089</t>
3090<t hangText="2008-09-06">
3091  Add experimental support for SVG images.
3092</t>
3093<t hangText="2008-09-17">
3094  Add experimental support for x:author. Fix xref/@format=none.
3095</t>
3096<t hangText="2008-10-10">
3097  Fix a huge bug, causing text content after an XML comment to be ignored.
3098</t>
3099<t hangText="2009-02-24">
3100  Use table/caption when needed.
3101</t>
3102<t hangText="2009-03-07">
3103  Fix bug that caused text to disappear in the output in presence of
3104  processing instructions.
3105</t>
3106<t hangText="2009-03-12">
3107  Make inlined comments bookmarkable.
3108</t>
3109<t hangText="2009-04-09">
3110  Upgrade to DC-HTML from RFC 2731 (affects head/@profile).
3111</t>
3112<t hangText="2009-07-08">
3113  Remove table/@summary in output; the value getting inserted was just
3114  repeating stuff that appeared in the preamble.
3115</t>
3116<t hangText="2009-08-01">
3117  Implement table alignment (HTML output only for now).
3118</t>
3119<t hangText="2009-08-18">
3120  Replicate Dublin Core "abstract" metadata into meta/@name=description
3121  (search engines do use it).
3122</t>
3123<t hangText="2009-09-02">
3124  Fix default/left alignment of table columns, remove silly table summmary
3125  attributes.
3126</t>
3127<t hangText="2009-09-24">
3128  Support double-sided layout using CSS page:left/right selectors.
3129</t>
3130<t hangText="2009-11-27">
3131  Generate unordered lists instead of broken definition lists for list style empty.
3132</t>
3133      </list></t>
3134    </section>
3135    <section title="rfc2629toFO.xslt">
3136      <t><list style="hanging">
3137<t hangText="2003-11-16">
3138    Initial release.
3139</t>
3140<t hangText="2003-11-29">
3141    Enhance handling of unknown list styles.
3142</t>
3143<t hangText="2004-04-04">
3144    Update reference section handling.
3145</t>
3146<t hangText="2004-04-17">
3147    Use XSL-WD-1.1-style fo:bookmark and index handling and add postprocessors for
3148    existing implementations. Unify PDF info generation by using XEP (postprocessors)
3149    will convert.
3150</t>
3151<t hangText="2004-04-20">
3152    Add experimental cref support.
3153</t>
3154<t hangText="2004-06-14">
3155    Set correct index-item defaults.
3156</t>
3157<t hangText="2004-07-18">
3158    Add list style=letters.
3159</t>
3160<t hangText="2004-09-03">
3161    Make URLs in text break where they are allowed to break by inserting
3162    zero-width spaces.
3163</t>
3164<t hangText="2004-09-26">
3165    Fix letter-style inside nested lists.
3166</t>
3167<t hangText="2004-10-31">
3168    Update handling of artwork.
3169</t>
3170<t hangText="2004-11-13">
3171    Fix handling of references inside ed:* markup.  Fix whitespace handling
3172    in artwork.
3173</t>
3174<t hangText="2004-11-27">
3175    Irefs in artwork generate monospaced entries in index.
3176</t>
3177<t hangText="2005-01-31">
3178    Fix TOC generation that was broken after changes in main XSLT.
3179</t>
3180<t hangText="2005-02-05">
3181    Bring in sync with cosmetic changes in rfc2629.xslt.
3182</t>
3183<t hangText="2005-05-07">
3184    Minor fix for change tracking in document title.  Support for table
3185    styles.
3186</t>
3187<t hangText="2005-06-18">
3188    Fix references to tables.
3189</t>
3190<t hangText="2005-10-15">
3191    Process t/@anchor.
3192</t>
3193<t hangText="2006-02-11">
3194    References: add "work in progress" for Internet Drafts.
3195</t>
3196<t hangText="2006-06-02">
3197    Use XSL 1.1 WD Feb 2006.
3198</t>
3199<t hangText="2007-03-21">
3200    Support optional text justification.
3201</t>
3202<t hangText="2007-05-19">
3203    Various improvements in spacing; also allow overriding the automatic
3204    list indentation via list/x:indent.
3205</t>
3206<t hangText="2009-04-08">
3207    Fix spacing in headers; add support for formatting for double-sided printing.
3208</t>
3209<t hangText="2009-08-01">
3210    Remove surplus empty pages when not generating double-sided output.
3211</t>
3212     </list></t>
3213    </section>
3214
3215    <section title="xsl11toAn.xslt">
3216    <t><list style="hanging">
3217<t hangText="2004-05-17">
3218     Initial release.
3219</t>
3220<t hangText="2006-06-02">
3221    Use XSL 1.1 WD Feb 2006.
3222</t>
3223    </list></t>
3224    </section>
3225
3226    <section title="xsl11toFop.xslt">
3227    <t><list style="hanging">
3228<t hangText="2004-05-17">
3229     Initial release.
3230</t>
3231<t hangText="2006-06-02">
3232    Use XSL 1.1 WD Feb 2006.
3233</t>
3234    </list></t>
3235    </section>
3236
3237    <section title="xsl11toFop-0.95.xslt">
3238    <t><list style="hanging">
3239<t hangText="2009-09-12">
3240    Support for FOP 0.20.5 and FOP 0.93 removed. Please use FOP 0.95.
3241</t>
3242<t hangText="2008-03-15">
3243    Add a workaround to the fo:inline workaround (sigh).
3244</t>
3245    </list></t>
3246    </section>
3247
3248    <section title="xsl11toXep.xslt">
3249    <t><list style="hanging">
3250<t hangText="2004-05-17">
3251     Initial release.
3252</t>
3253<t hangText="2004-09-04">
3254     Fix xep:index-item attributes.
3255</t>
3256<t hangText="2006-06-02">
3257    Use XSL 1.1 WD Feb 2006.
3258</t>
3259    </list></t>
3260    </section>
3261  </section>
3262
3263</back>
3264</rfc>
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