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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="April" year="2008"/>
33    <keyword>RFC2629</keyword>
34    <keyword>xml2rfc</keyword>
35    <keyword>XSLT</keyword>
36    <keyword>hCard</keyword>
37    <keyword>XSL-FO</keyword>
38    <keyword>PDF</keyword>
39    <keyword>GRDDL</keyword>
40    <keyword>Dublin Core</keyword>
41        </front>
42
43        <middle>
44
45<section title="Introduction">
46<t>
47  This document describes a set of XSLT transformations that can be used to
48  transform RFC2629-compliant XML (see <xref target="RFC2629"/>) to various
49  output formats, such as HTML and PDF. The main topics are 
50  <list style="symbols">
51    <t>compliance to the xml2rfc XML element set (<xref target="supported.elements"/>),</t>
52    <t>support for xml2rfc processing instructions (<xref target="processing.instructions"/>),</t>
53    <t>the names of anchor elements generated in HTML and PDF output (<xref target="anchors"/>),</t>
54    <t>various XSLT engines that can be used (<xref target="xslt.engines"/>),</t>
55    <t>outputting HTML (<xref target="output.html"/>) and XHTML (<xref target="output.xhtml"/>),</t>
56    <t>outputting CHM (Compiled Microsoft Help, <xref target="output.chm"/>),</t>
57    <t>outputting PDF through XSL-FO (<xref target="output.pdf"/>) and</t>
58    <t>various utilities (<xref target="utilities"/>).</t>
59  </list>
60</t>
61</section>
62
63<section title="Supported RFC2629 elements" anchor="supported.elements">
64<t>
65  <spanx style="verb">rfc2629.xslt</spanx> supports both all RFC2629 grammar elements and the extensions
66  implemented in xml2rfc 1.21.
67</t>
68<section title="Extension elements">
69<t>
70  In addition, <spanx style="verb">rfc2629.xslt</spanx> supports a set of extension elements, using elements
71  and attributes in the namespace "http://greenbytes.de/2002/rfcedit". They
72  are used for
73  <list style="symbols">
74    <t>simple issue tracking and change tracking and</t>
75    <t>adding additional metadata to the generated documents (such as HTML LINK
76    elements to related documents, see <xref target="html.link"/>).</t>
77  </list>
78</t>
79<t>
80  Note that these extensions are experimental. Please email the author in case
81  you're interested in using these extensions.
82</t>
83</section>
84</section>
85
86<section title="Processing Instructions" anchor="processing.instructions">
87<t>
88  All PIs can be set as XSLT parameter as well, overriding any value that
89  is found in the source file to be transformed.
90</t>
91<figure>
92<preamble>Using processing instructions:</preamble>
93<artwork type="example">
94&lt;?rfc toc="yes"?>
95&lt;?rfc-ext support-rfc2731="no"?>
96</artwork>
97</figure>
98<figure>
99<preamble>Using XSLT parameters (Saxon):</preamble>
100<artwork type="example">
101java -cp saxon.jar com.icl.saxon.StyleSheet source.xml rfc2629.xslt \
102  xml2rfc-toc=yes xml2rfc-ext-support-rfc2731=no > result.html
103</artwork>
104</figure>
105<figure>
106<preamble>Using XSLT parameters (xsltproc):</preamble>
107<artwork type="example">
108xsltproc --param xml2rfc-toc '"yes"' \
109   --param xml2rfc-ext-support-rfc2731 '"no"' \
110   rfc2629.xslt source.xml > result.html
111</artwork>
112<postamble>(note the required quoting of string parameters)<iref item="xsltproc" subitem="passing parameters"/></postamble>
113</figure>
114
115<section title="Supported xml2rfc-compatible PIs">
116<texttable>
117  <ttcol>PI target</ttcol>
118  <ttcol>PI pseudo-attribute</ttcol>
119  <ttcol>XSLT parameter name</ttcol>
120  <ttcol>default</ttcol>
121  <ttcol>comment</ttcol>
122
123  <c>rfc</c>
124  <c>background<iref item="background PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="background"/></c>
125  <c>xml2rfc-background<iref item="xml2rfc-background parameter"/> <iref item="Parameters" subitem="xml2rfc-background"/></c>
126  <c>(not set)</c>
127  <c/>
128 
129  <c>rfc</c>
130  <c>compact<iref item="compact PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="compact"/></c>
131  <c>xml2rfc-compact<iref item="xml2rfc-editing parameter"/> <iref item="Parameters" subitem="xml2rfc-compact"/></c>
132  <c>"no"</c>
133  <c>only applies to HTML output method when printing</c>
134
135  <c>rfc</c>
136  <c>comments<iref item="comments PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="comments"/></c>
137  <c>xml2rfc-comments<iref item="xml2rfc-comments parameter"/> <iref item="Parameters" subitem="xml2rfc-comments"/></c>
138  <c>(not set)</c>
139  <c/>
140
141  <c>rfc</c>
142  <c>editing<iref item="editing PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="editing"/></c>
143  <c>xml2rfc-editing<iref item="xml2rfc-editing parameter"/> <iref item="Parameters" subitem="xml2rfc-editing"/></c>
144  <c>"no"</c>
145  <c/>
146 
147  <c>rfc</c>
148  <c>footer<iref item="footer PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="footer"/></c>
149  <c>xml2rfc-footer<iref item="xml2rfc-footer parameter"/> <iref item="Parameters" subitem="xml2rfc-footer"/></c>
150  <c>(not set)</c>
151  <c/>
152 
153  <c>rfc</c>
154  <c>header<iref item="header PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="header"/></c>
155  <c>xml2rfc-header<iref item="xml2rfc-header parameter"/> <iref item="Parameters" subitem="xml2rfc-header"/></c>
156  <c>(not set)</c>
157  <c/>
158
159  <c>rfc</c>
160  <c>inline<iref item="inline PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="inline"/></c>
161  <c>xml2rfc-inline<iref item="xml2rfc-inline parameter"/> <iref item="Parameters" subitem="xml2rfc-inline"/></c>
162  <c>(not set)</c>
163  <c/>
164
165  <c>rfc</c>
166  <c>iprnotified<iref item="iprnotified PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="iprnotified"/></c>
167  <c>xml2rfc-iprnotified<iref item="xml2rfc-iprnotified parameter"/> <iref item="Parameters" subitem="xml2rfc-iprnotified"/></c>
168  <c>"no"</c>
169  <c/>
170
171  <c>rfc</c>
172  <c>linkmailto<iref item="linkmailto PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="linkmailto"/></c>
173  <c>xml2rfc-linkmailto<iref item="xml2rfc-linkmailto parameter"/> <iref item="Parameters" subitem="xml2rfc-linkmailto"/></c>
174  <c>"yes"</c>
175  <c/>
176 
177  <c>rfc</c>
178  <c>private<iref item="private PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="private"/></c>
179  <c>xml2rfc-private<iref item="xml2rfc-private parameter"/> <iref item="Parameters" subitem="xml2rfc-private"/></c>
180  <c>(not set)</c>
181  <c/>
182 
183  <c>rfc</c>
184  <c>sortrefs<iref item="sortrefs PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="sortrefs"/></c>
185  <c>xml2rfc-sortrefs<iref item="xml2rfc-sortrefs parameter"/> <iref item="Parameters" subitem="xml2rfc-sortrefs"/></c>
186  <c>"no"</c>
187  <c/>
188 
189  <c>rfc</c>
190  <c>symrefs<iref item="symrefs PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="symrefs"/></c>
191  <c>xml2rfc-symrefs<iref item="xml2rfc-symrefs parameter"/> <iref item="Parameters" subitem="xml2rfc-symrefs"/></c>
192  <c>"yes"</c>
193  <c>The default has changed from "no" to "yes" as of June 6, 2007 and xml2rfc 1.33pre4.</c>
194 
195  <c>rfc</c>
196  <c>toc<iref item="toc PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="toc"/></c>
197  <c>xml2rfc-toc<iref item="xml2rfc-toc parameter"/> <iref item="Parameters" subitem="xml2rfc-toc"/></c>
198  <c>"no"</c>
199  <c/>
200 
201  <c>rfc</c>
202  <c>tocdepth<iref item="tocdepth PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="tocdepth"/></c>
203  <c>xml2rfc-tocdepth<iref item="xml2rfc-tocdepth parameter"/> <iref item="Parameters" subitem="xml2rfc-tocdepth"/></c>
204  <c>99</c>
205  <c/>
206
207  <c>rfc</c>
208  <c>topblock<iref item="topblock PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="topblock"/></c>
209  <c>xml2rfc-topblock<iref item="xml2rfc-topblock parameter"/> <iref item="Parameters" subitem="xml2rfc-topblock"/></c>
210  <c>"yes"</c>
211  <c/>
212
213</texttable>
214</section>
215
216<section title="Unsupported xml2rfc-compatible PIs">
217<texttable>
218  <ttcol>PI target</ttcol>
219  <ttcol>PI pseudo-attribute</ttcol>
220  <ttcol>comment</ttcol>
221
222  <c>rfc</c>
223  <c>include<iref item="include PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="include"/></c>
224  <c>incompatible with XML/XSLT processing model</c>
225
226  <c>rfc</c>
227  <c>needLines<iref item="needLines PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="needLines"/></c>
228  <c/>
229
230  <c>rfc</c>
231  <c>slides<iref item="slides PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="slides"/></c>
232  <c/>
233
234  <c>rfc</c>
235  <c>strict<iref item="strict PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="strict"/></c>
236  <c/>
237
238  <c>rfc</c>
239  <c>subcompact<iref item="subcompact PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="subcompact"/></c>
240  <c/>
241
242  <c>rfc</c>
243  <c>tocindent<iref item="tocindent PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="tocindent"/></c>
244  <c>(defaults to "yes")</c>
245
246 <c>rfc</c>
247  <c>tocompact<iref item="tocompact PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="tocompact"/></c>
248  <c/>
249
250</texttable>
251</section>
252
253<section title="Extension PIs">
254<texttable>
255  <ttcol>PI target</ttcol>
256  <ttcol>PI pseudo-attribute</ttcol>
257  <ttcol>XSLT parameter name</ttcol>
258  <ttcol>default</ttcol>
259  <ttcol>description</ttcol>
260
261  <c>rfc-ext</c>
262  <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>
263  <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>
264  <c>"no"</c>
265  <c>Enables support for specific elements inside abstract elements (using this extension
266  makes the document incompatible to the RFC2629bis DTD; see description of
267  conversion XSLT in <xref target="clean-for-dtd"/>).</c>
268
269  <c>rfc-ext</c>
270  <c>authors-section<iref item="authors-section PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="authors-section"/></c>
271  <c>xml2rfc-ext-authors-section<iref item="xml2rfc-ext-authors-section parameter"/> <iref item="Parameters" subitem="xml2rfc-ext-authors-section"/></c>
272  <c></c>
273  <c>When "end", place the authors section at the end (just before the
274  copyright statements). This seems to be the preferred order in the
275  newest RFCs.</c>
276
277  <c>rfc-ext</c>
278  <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>
279  <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>
280  <c></c>
281  <c>When set to "yes", index entries are generated for all references.</c>
282
283  <c>rfc-ext</c>
284  <c>justification<iref item="justification PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="ijustification"/></c>
285  <c>xml2rfc-ext-justification<iref item="xml2rfc-ext-justification parameter"/> <iref item="Parameters" subitem="xml2rfc-ext-justification"/></c>
286  <c>"never"</c>
287  <c>"never": never emit justified text, "always": always emit justified text, "print": only emit justified text for print media.</c>
288
289  <c>rfc-ext</c>
290  <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>
291  <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>
292  <c>"no"</c>
293  <c>May be used to enable parsing of XML content in figures (MSXML only).</c>
294
295  <c>rfc-ext</c>
296  <c>support-rfc2731<iref item="support-rfc2731 PI pseudo-attribute"/><iref item="Processing Instruction pseudo attributes" subitem="support-rfc2731"/></c>
297  <c>xml2rfc-ext-support-rfc2731<iref item="xml2rfc-ext-support-rfc2731 parameter"/> <iref item="Parameters" subitem="xml2rfc-ext-support-rfc2731"/></c>
298  <c>"yes"</c>
299  <c>Decides whether the HTML transformation should generate META tags according <xref target="rfc2731.properties"/>.</c>
300
301  <c>rfc-ext</c>
302  <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>
303  <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>
304  <c></c>
305  <c>When set to "yes", add trailing dots to section numbers. This seems to be the preferred format in the
306  newest RFCs.</c>
307
308</texttable>
309</section>
310
311</section>
312
313<section title="Anchors" anchor="anchors">
314<t>
315  The transformation automatically generates anchors that are supposed to
316  be stable and predictable and that can be used to identify specific
317  parts of the document. Anchors are generated both in HTML and XSL-FO
318  content (but the latter will only be used for PDF output when the XSL-FO
319  engine supports producing PDF anchors).
320</t>
321<texttable>
322<preamble>The following anchors get auto-generated:</preamble>
323<ttcol>Anchor name</ttcol><ttcol>Description</ttcol>
324
325  <c>rfc.abstract <iref item="rfc.abstract anchor"/><iref item="Anchors" subitem="rfc.abstract"/></c><c>Abstract</c>
326  <c>rfc.authors <iref item="rfc.authors anchor"/><iref item="Anchors" subitem="rfc.authors"/></c><c>Authors section</c>
327  <c>rfc.copyright <iref item="rfc.copyright anchor"/><iref item="Anchors" subitem="rfc.copyright"/></c><c>Copyright section</c>
328  <c>rfc.copyrightnotice <iref item="rfc.copyrightnotice anchor"/><iref item="Anchors" subitem="rfc.copyrightnotice"/></c><c>Copyright notice</c>
329  <c>rfc.figure.<spanx>n</spanx> <iref item="rfc.figure.n anchor"/><iref item="Anchors" subitem="rfc.figure.n"/></c><c>Figures (titled)</c>
330  <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>
331  <c>rfc.index <iref item="rfc.index anchor"/><iref item="Anchors" subitem="rfc.index"/></c><c>Index</c>
332  <c>rfc.ipr <iref item="rfc.ipr anchor"/><iref item="Anchors" subitem="rfc.ipr"/></c><c>Intellectual Property</c>
333  <c>rfc.iref.<spanx>n</spanx> <iref item="rfc.iref.n anchor"/><iref item="Anchors" subitem="rfc.iref.n"/></c><c>Internal references</c>
334  <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>
335  <c>rfc.references <iref item="rfc.references anchor"/><iref item="Anchors" subitem="rfc.references"/></c><c>References</c>
336  <c>rfc.references.<spanx>n</spanx> <iref item="rfc.references.n anchor"/><iref item="Anchors" subitem="rfc.references"/></c><c>Additional references</c>
337  <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>
338  <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>
339  <c>rfc.status <iref item="rfc.status anchor"/><iref item="Anchors" subitem="rfc.status"/></c><c>Status of memo</c>
340  <c>rfc.table.<spanx>n</spanx> <iref item="rfc.figure.n anchor"/><iref item="Anchors" subitem="rfc.figure.n"/></c><c>Tables (titled)</c>
341  <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>
342  <c>rfc.toc <iref item="rfc.toc anchor"/><iref item="Anchors" subitem="rfc.toc"/></c><c>Table of contents</c>
343  <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>
344
345</texttable>
346</section>
347
348<section title="Supported XSLT engines" anchor="xslt.engines">
349<t>
350  The transformation requires a non-standard extension function (see <eref target="http://www.exslt.org/exsl/functions/node-set/exsl.node-set.html">
351  exsl:node-set</eref>)
352  which is however widely available. XSLT processors that do not support this
353  extension (or a functional equivalent) currently are not supported.
354</t>
355<section title="Standalone Engines">
356<t>
357  The following XSLT engines are believed to work well:
358  <list style="symbols">
359    <t><iref item="MSXML3"/><iref item="MSXML4"/>MSXML3 and MSXML4 (<eref target="http://msdn.microsoft.com/xml"/>; these processors
360    do not support exsl:node-set(), but have a similar proprietary extension)</t>
361    <t><iref item="Saxon"/>Saxon (<eref target="http://saxon.sourceforge.net/"/>)</t>
362    <t><iref item="Xalan"/>Xalan (<eref target="http://xml.apache.org/xalan-j/"/>)</t>
363    <t><iref item="xsltproc"/>xsltproc (libxslt) (<eref target="http://xmlsoft.org/XSLT/"/>, make sure that you
364    have a current version)</t>
365  </list>
366</t>
367</section>
368
369<section title="In-Browser Engines">
370<t>
371  The following browsers seem to work fine:
372  <list style="symbols">
373    <t><iref item="Internet Explorer 5.5"/>Internet Explorer 5.5 (Windows version, if MSXML3 is installed)</t>
374    <t><iref item="Internet Explorer 6"/>Internet Explorer 6</t>
375    <t><iref item="Internet Explorer 7"/>Internet Explorer 7</t>
376    <t anchor="firefox3"><iref item="Mozilla"/><iref item="Firefox" subitem="3.*"/>Firefox 3.* (currently only test builds available)</t>
377    <t><iref item="Opera"/><iref item="Opera" subitem="9.5"/>Opera 9.5 (currently only test builds available)</t>
378    <t><iref item="Safari"/><iref item="Safari" subitem="3.*"/>Safari 3 (starting with version 3.0.4)</t>
379  </list>
380</t>
381<t>
382  The following browsers are known not to work properly:
383  <list style="symbols">
384    <t anchor="firefox12"><iref item="Mozilla"/><iref item="Firefox" subitem="1.*/2.*"/>Firefox 1.*/2.* (missing extension function - see change request at Mozilla BugZilla
385    <eref target="http://bugzilla.mozilla.org/show_bug.cgi?id=193678">193678</eref>)</t>
386    <t anchor="opera"><iref item="Opera"/>Opera 9.21: execution fails, potentially
387    to a somewhat complex XPath expression (reported to Opera as bug 245725).</t>
388    <t anchor="safari"><iref item="Safari"/>Safari 2.* supports client-side XSLT as of MacOS X 10.4,
389    but misses required extension functions. A problem
390    with stylesheets producing non-ASCII output (such as NBSP characters)
391    has been fixed as of OSX 10.4.4. Both
392    problems have been reported through Apple's bug tracking system, see
393    <eref target="http://drakken.dbc.mtview.ca.us/pipermail/xml2rfc/2005-May/002073.html"/> and
394    <eref target="http://bugs.webkit.org/show_bug.cgi?id=4079"/>.
395    </t>
396  </list>
397</t>
398</section>
399
400</section>
401
402<section title="Transforming to HTML" anchor="output.html">
403<t>
404  Transformation to HTML can be done inside the browser if it supports
405  XSLT. To enable this, add the following processing instruction to
406  the start of the source file:
407</t>
408<iref item="xml-stylesheet PI"/>
409<figure><artwork type="example">
410  &lt;?xml-stylesheet type='text/xsl' href='rfc2629.xslt' ?>
411</artwork></figure>
412<t>
413  (and ensure that <spanx style="verb">rfc2629.xslt</spanx> is present).
414</t>
415
416<section title="HTML compliance">
417<t>
418  The transformation result is supposed to conform to the HTML 4.01 strict
419  DTD <xref target="HTML"/>. This can be checked using the W3C's online
420  validator at <eref target="http://validator.w3.org" /><iref item="HTML compliance"/>.
421</t>
422</section>
423
424<section title="Standard HTML LINK elements" anchor="html.link">
425<t>
426  LINK elements exist since HTML 2.0. They can be used to embed content-independant
427  links inside the document. Unfortunately, only few user agents
428  support this element. Firefox users may want to check the
429  <eref target="https://addons.mozilla.org/firefox/2933/">Link Widgets</eref>
430  extension.
431</t>
432<texttable>
433<preamble>The following LINK elements are produced:</preamble>
434
435  <ttcol>LINK type</ttcol>
436  <ttcol>description</ttcol>
437 
438  <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>
439  <c>appendic<iref item="appendix HTML LINK element"/><iref item="HTML LINK elements" subitem="appendix"/></c><c>pointer to all top-level appendics</c>
440  <c>author<iref item="author HTML LINK element"/><iref item="HTML LINK elements" subitem="author"/></c><c>pointer to "authors" section</c>
441  <c>chapter<iref item="chapter HTML LINK element"/><iref item="HTML LINK elements" subitem="chapter"/></c><c>pointer to all top-level sections</c>
442  <c>contents<iref item="contents HTML LINK element"/><iref item="HTML LINK elements" subitem="contents"/></c><c>pointer to table of contents</c>
443  <c>copyright<iref item="copyright HTML LINK element"/><iref item="HTML LINK elements" subitem="copyright"/></c><c>pointer to copyright statement</c>
444  <c>index<iref item="index HTML LINK element"/><iref item="HTML LINK elements" subitem="index"/></c><c>pointer to index</c>
445
446</texttable>
447<figure>
448<preamble>
449The figure below shows how Mozilla Firefox 1.0 displays the Site Navigation Bar
450for rfc2396.xml.
451</preamble>
452<artwork src="rfc2629xslt-fig1.png" height="235" width="509" type="image/png">
453(LINK elements displayed in Mozilla Firefox for RFC2396.xml)
454</artwork>
455</figure>
456
457</section>
458
459
460<section title="Standard HTML metadata">
461<texttable>
462<preamble>The following standard HTML META elements are produced:</preamble>
463
464  <ttcol>META name</ttcol>
465  <ttcol>description</ttcol>
466 
467  <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>
468  <c>keywords<iref item="keywords HTML META element"/><iref item="HTML META elements" subitem="keywords"/></c><c>from keyword elements in front section</c>
469
470</texttable>
471</section>
472
473
474<section title="Dublin Core (RFC2731) metadata" anchor="rfc2731.properties">
475<t>
476  Unless turned off using the "rfc-ext support-rfc2731" processing
477  instruction, the transformation will generate metadata according to
478  <xref target="RFC2731"/>.
479</t>
480<texttable>
481<preamble>The following DCMI properties are produced:</preamble>
482
483  <ttcol>META name</ttcol>
484  <ttcol>description</ttcol>
485 
486  <c>DC.Creator<iref item="Creator DCMI property"/><iref item="DCMI properties" subitem="Creator"/></c><c>from author information in front section</c>
487  <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>
488  <c>DC.Description.Abstract<iref item="Description.Abstract DCMI property"/><iref item="DCMI properties" subitem="Description.Abstract"/></c><c>from abstract</c>
489  <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>
490  <c>DC.Relation.Replaces<iref item="Relation.Replaces DCMI property"/><iref item="DCMI properties" subitem="Relation.Replaces"/></c><c>from "obsoletes" attribute</c>
491
492</texttable>
493</section>
494
495<section title="Experimental hCard support" anchor="hcard">
496<t>
497  The generated author information is formatted in <eref target="http://microformats.org/wiki/hcard">hCard</eref>
498  format.
499</t>
500</section>
501
502
503</section>
504
505<section title="Transforming to XHTML" anchor="output.xhtml">
506<t>
507  Transforming to XHTML requires slightly different XSLT output options and
508  is implemented by the derived transformation script <spanx style="verb">rfc2629toXHTML.xslt</spanx>.
509</t>
510<t><list><t>
511  <x:h>Note:</x:h> Microsoft Internet Explorer does <spanx>not</spanx> support XHTML.
512  Therefore it usually makes more sense to generate plain old HTML.
513</t></list></t>
514</section>
515
516<section title="Transforming to CHM (Microsoft Compiled Help)" anchor="output.chm">
517<t>
518  <iref item="CHM format"/>
519  <iref item="Microsoft Help"/>
520  To generate a CHM file using Microsoft's HTML Help Compiler (hhc), three
521  files are required in addition to the HTML file.
522  <list style="numbers">
523    <t>hhc - table of contents file (HTML)</t>
524    <t>hhk - index file (HTML)</t>
525    <t>hhp - project file (plain text)</t>
526  </list> 
527</t>
528<t>
529  The three files are generated with three specific transformations, each
530  requiring the additional XSLT parameter "basename" to specify the filename
531  prefix.
532</t>
533<figure>
534<preamble>Example:</preamble>
535<artwork type="example">
536saxon rfc2616.xml rfc2629toHhp.xslt basename=rfc2616  > rfc2616.hhp
537saxon rfc2616.xml rfc2629toHhc.xslt basename=rfc2616  > rfc2616.hhc
538saxon rfc2616.xml rfc2629toHhk.xslt basename=rfc2616  > rfc2616.hhk
539hhc rfc2616.hhp
540</artwork>
541</figure>
542</section>
543
544<section title="Transforming to PDF via XSL-FO" anchor="output.pdf">
545
546<section title="Via XSL-FO" anchor="output.pdf.fop">
547<t>
548  Transformation to XSL-FO <xref target="XSL-FO"/> format is available through
549  <spanx style="verb">rfc2629toFO.xslt</spanx> (which includes <spanx style="verb">rfc2629.xslt</spanx>, so keep both in the
550  same folder).
551</t>
552<t>
553  Compared to HTML user agents, XSL-FO engines unfortunately either come
554  as open source (for instance, <iref item="Apache FOP"/>Apache FOP) or
555  feature-complete (for instance, <iref item="AntennaHouse XSL Formatter"/>
556  AntennaHouse XSL Formatter), but not both at the same time.
557</t>
558<t>
559  As Apache FOP needs special workarounds (page breaking, table layout), and
560  some popular extensions aren't standardized yet, the translation produces
561  a generic output (hopefully) conforming to <xref target="XSL-FO"/>.
562  Specific backends (<spanx style="verb">xsl11toFop.xslt</spanx>,
563  <spanx style="verb">xsl11toXep.xslt</spanx>, <spanx style="verb">xsl11toAn.xslt</spanx>)
564  then provide post-processing for the individual processors.
565</t>
566<t>
567  <list>
568    <t>
569      <x:h>Note:</x:h>
570      the output is currently targeted at Apache FOP 0.20.5
571      (<eref target="http://xmlgraphics.apache.org/fop/0.20.5/"/>), not the
572      newer versions.
573    </t>
574  </list>
575</t>
576
577<section title="Extension feature matrix">
578<texttable>
579  <ttcol/>
580  <ttcol align="center" width="20%">PDF anchors</ttcol>
581  <ttcol align="center" width="20%">PDF bookmarks</ttcol>
582  <ttcol align="center" width="20%">PDF document information</ttcol>
583  <ttcol align="center" width="20%">Index cleanup</ttcol>
584 
585  <c><eref target="http://www.w3.org/TR/2003/WD-xsl11-20031217/">XSL 1.1 WD</eref></c>
586  <c>no, but can be auto-generated from "id" attributes</c> 
587  <c><eref target="http://www.w3.org/TR/2003/WD-xsl11-20031217/#d0e12873">yes</eref></c>
588  <c>no, but uses XEP output extensions</c>
589  <c><eref target="http://www.w3.org/TR/2003/WD-xsl11-20031217/#d0e12534">yes</eref></c>
590
591  <c><eref target="http://www.antennahouse.com/">Antenna House XSL formatter</eref></c>
592  <c>no</c>
593  <c><eref target="http://www.antennahouse.com/XSL20/axf-extension.htm">yes</eref> (from XSL 1.1 bookmarks)</c>
594  <c><eref target="http://www.antennahouse.com/XSL20/axf-extension.htm">yes</eref> (from XEP document info)</c>
595  <c><eref target="http://www.antennahouse.com/XSL20/axf-extension.htm">yes</eref> (just page duplicate elimination, from XSL 1.1 page index)</c>
596
597  <c><eref target="http://xml.apache.org/fop/">Apache FOP</eref></c>
598  <c><eref target="http://xml.apache.org/fop/extensions.html#named-destinations">yes</eref></c>
599  <c><eref target="http://xml.apache.org/fop/extensions.html#bookmarks">yes</eref> (from XSL 1.1 bookmarks)</c>
600  <c>no</c>
601  <c>no</c>
602
603  <c><eref target="http://xep.xattic.com/">RenderX XEP</eref></c>
604  <c>no</c>
605  <c><eref target="http://xep.xattic.com/xep/spec.html">yes</eref> (from XSL 1.1 bookmarks)</c>
606  <c><eref target="http://xep.xattic.com/xep/spec.html">yes</eref></c>
607  <c><eref target="http://xep.xattic.com/xep/spec.html">yes</eref> (from XSL 1.1 page index)</c>
608
609</texttable>
610</section>
611
612<section title="Example: producing output for Apache FOP">
613<figure>
614<preamble>Example:</preamble>
615<artwork type="example">
616saxon rfc2616.xml rfc2629toFo.xslt > tmp.fo
617saxon tmp.fo xsl11toFop.xslt > rfc2629.fo
618</artwork>
619</figure>
620</section>
621</section>
622
623<section title="Via X(HTML)" anchor="output.pdf.html">
624<t>
625  PDF output can also be produced directly from (X)HTML. One simple approach
626  is to rely on the browser's printing function, and to use a printer driver
627  that produces PDF. Depending on the brower's CSS capabilities, the output
628  will behave properly with respect to table breaks etc.
629</t>
630<t>
631  An alternative is PrinceXML (see <eref target="http://www.princexml.com/"/>),
632  which can produce PDF directly from (X)HTML input, based on the CSS printing
633  information.
634</t>
635<figure>
636  <preamble>
637    For instance, PDF output with text justification turned on can be
638    produced with:
639  </preamble>
640  <artwork type="example">
641saxon input.xml rfc2629toXHTML.xslt xml2rfc-ext-justification=print \
642  > output.xhtml
643prince output.xhtml output.pdf</artwork>
644</figure>
645</section>
646
647</section>
648
649<section title="Generic Extensions" anchor="extensions">
650<t>
651  This section documents extensions implemented in
652  <spanx style="verb">rfc2629.xslt</spanx>, using the extension
653  namespace "http://purl.org/net/xml2rfc/ext".
654</t>
655
656<section title="&lt;anchor-alias> element" anchor="ext.element.anchor-alias">
657  <iref item="Extension Elements" subitem="anchor-alias" primary="true"/>
658  <iref item="anchor-alias Extension Element" primary="true"/>
659  <x:anchor-alias value="anchor-alias"/>
660  <t>
661    Using its "value" attribute, this element allows the definition of an
662    internal link target alias for the enclosing element. This alias can
663    then be used with the &lt;<x:ref>ref</x:ref>> element for intra-document
664    references.
665  </t>
666  <t>
667    Note that the anchor alias is not subject to the naming constraints that
668    apply to anchor elements (which are <eref target="http://www.w3.org/TR/REC-xml/#NT-Name">XML
669    names</eref>).
670  </t>
671</section>
672
673<section title="&lt;bcp14> element" anchor="ext.element.bcp14">
674  <iref item="Extension Elements" subitem="bcp14" primary="true"/>
675  <iref item="bcp14 Extension Element" primary="true"/>
676  <x:anchor-alias value="bcp14"/>
677  <t>
678    This element marks the content as being one of the normative keywords
679    defined in <xref target="RFC2119"/>.
680  </t>
681  <figure>
682    <preamble>
683      The DOCTYPE definition below allows using these keywords using XML
684      entity expansion: such as in "...server &amp;MUST; accept...".
685    </preamble>
686    <artwork type="example">
687&lt;!DOCTYPE rfc [
688 &lt;!ENTITY MAY "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
689   >MAY&lt;/bcp14>">
690 &lt;!ENTITY MUST "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
691   >MUST&lt;/bcp14>">
692 &lt;!ENTITY MUST-NOT "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
693   >MUST NOT&lt;/bcp14>">
694 &lt;!ENTITY OPTIONAL "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
695   >OPTIONAL&lt;/bcp14>">
696 &lt;!ENTITY RECOMMENDED "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
697   >RECOMMENDED&lt;/bcp14>">
698 &lt;!ENTITY REQUIRED "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
699   >REQUIRED&lt;/bcp14>">
700 &lt;!ENTITY SHALL "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
701   >SHALL&lt;/bcp14>">
702 &lt;!ENTITY SHALL-NOT "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
703   >SHALL NOT&lt;/bcp14>">
704 &lt;!ENTITY SHOULD "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
705   >SHOULD&lt;/bcp14>">
706 &lt;!ENTITY SHOULD-NOT "&lt;bcp14 xmlns='http://purl.org/net/xml2rfc/ext'
707   >SHOULD NOT&lt;/bcp14>">]></artwork>
708  </figure>
709</section>
710
711<section title="&lt;bb> element" anchor="ext.element.bb">
712  <iref item="Extension Elements" subitem="bb" primary="true"/>
713  <iref item="bb Extension Element" primary="true"/>
714  <x:anchor-alias value="bb"/>
715  <t>
716    Marking up a string as &lt;bb> indicates that it represents the bottom
717    line of a box drawing, replacing the "+" and "-" characters accordingly.
718  </t>
719</section>
720
721<section title="&lt;bc> element" anchor="ext.element.bc">
722  <iref item="Extension Elements" subitem="bc" primary="true"/>
723  <iref item="bc Extension Element" primary="true"/>
724  <x:anchor-alias value="bc"/>
725  <t>
726    Marking up a string as &lt;bc> indicates that it represents a center
727    line of a box drawing, replacing the "|" character accordingly.
728  </t>
729</section>
730
731<section title="&lt;blockquote> element" anchor="ext.element.blockquote">
732  <iref item="Extension Elements" subitem="blockquote" primary="true"/>
733  <iref item="blockquote Extension Element" primary="true"/>
734  <x:anchor-alias value="blockquote"/>
735  <t>
736    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"/> 
737    (note this is a block-level element!). It should contain one or more
738    &lt;t> child elements.
739  </t>
740</section>
741
742<section title="&lt;bt> element" anchor="ext.element.bt">
743  <iref item="Extension Elements" subitem="bt" primary="true"/>
744  <iref item="bt Extension Element" primary="true"/>
745  <x:anchor-alias value="bt"/>
746  <t>
747    Marking up a string as &lt;bt> indicates that it represents the top
748    line of a box drawing, replacing the "+" and "-" characters accordingly.
749  </t>
750</section>
751
752<section title="&lt;dfn> element" anchor="ext.element.dfn">
753  <iref item="Extension Elements" subitem="dfn" primary="true"/>
754  <iref item="dfn Extension Element" primary="true"/>
755  <x:anchor-alias value="dfn"/>
756  <t>
757    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"/>.
758  </t>
759</section>
760
761<section title="&lt;h> element" anchor="ext.element.h">
762  <iref item="Extension Elements" subitem="h" primary="true"/>
763  <iref item="h Extension Element" primary="true"/>
764  <x:anchor-alias value="h"/>
765  <t>
766    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"/>.
767  </t>
768</section>
769
770<section title="&lt;length-of> element" anchor="ext.element.length-of">
771  <iref item="Extension Elements" subitem="length-of" primary="true"/>
772  <iref item="length-of Extension Element" primary="true"/>
773  <x:anchor-alias value="length-of"/>
774  <t>
775    This element can be used to insert the length of another formatted
776    section (in decimal).
777  </t>
778  <figure>
779    <preamble>Example: computing the Content-Length header value</preamble>
780    <artwork type="example">
781&lt;artwork>
782...
783Content-Length: &lt;x:length-of target="req"/>
784 
785&lt;x:span anchor="req">123456789
786&lt;x:span>&lt;artwork/>
787</artwork>
788  </figure>
789  <t>
790    The lenght computation counts line ends as two characters (CRLF).
791  </t>
792  <t>
793    Note that indentation characters in artwork <spanx>will</spanx> be
794    counted. The "indented" attribute allows to specify the amount of
795    indentation to be substracted from the computed length.
796  </t>
797</section>
798
799<section title="&lt;link> element" anchor="ext.element.link">
800  <iref item="Extension Elements" subitem="link" primary="true"/>
801  <iref item="link Extension Element" primary="true"/>
802  <x:anchor-alias value="link"/>
803  <t>
804    This element can be added as a top-level child element below
805    &lt;rfc> to indicate additional link information. It's currently
806    used only when generating HTML output, in which case an HTML
807    <eref target="http://www.w3.org/TR/html4/struct/links.html#edef-LINK">&lt;link></eref> element with identical attributes gets generated.
808  </t>
809  <figure>
810    <preamble>Example: generating HTML link element</preamble>
811    <artwork type="example">
812        &lt;x:link xmlns="http://purl.org/net/xml2rfc/ext"
813            rel="Bookmark"
814            title="IETF WEBDAV Working Group"
815            href="http://ftp.ics.uci.edu/pub/ietf/webdav/"/></artwork>
816  </figure>
817</section>
818
819<section title="&lt;lt> element" anchor="ext.element.lt">
820  <iref item="Extension Elements" subitem="lt" primary="true"/>
821  <iref item="lt Extension Element" primary="true"/>
822  <x:anchor-alias value="lt"/>
823  <t>
824    Used for grouping multiple &lt;t&gt; elements into a single list item.
825  </t>
826</section>
827
828<section title="&lt;q> element" anchor="ext.element.q">
829  <iref item="Extension Elements" subitem="q" primary="true"/>
830  <iref item="q Extension Element" primary="true"/>
831  <x:anchor-alias value="q"/>
832  <t>
833    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"/>.
834  </t>
835</section>
836
837<section title="&lt;ref> element" anchor="ext.element.ref">
838  <iref item="Extension Elements" subitem="ref" primary="true"/>
839  <iref item="ref Extension Element" primary="true"/>
840  <x:anchor-alias value="ref"/>
841  <t>
842    This element is a simplified variant of the &lt;xref> element, in that
843    no "target" attribute needs to be specified, instead the text contents
844    acts as identifier.  That in itself wouldn't be terribly useful,
845    but together with the &lt;<x:ref>anchor-alias</x:ref>>, it allows
846    referring to other parts of the document with minimal additional markup.
847  </t>
848  <t>
849    For instance, given an alias definition such as
850  </t>
851  <figure>
852    <artwork type="example">
853      &lt;section title="Test" anchor="test">
854        &lt;x:anchor-alias value="alias1"/>
855        &lt;x:anchor-alias value="alias 2"/>
856        ...
857      &lt;/section></artwork>
858  </figure>
859  <t>
860    the following simple references
861  </t>
862  <figure>
863    <artwork type="example">
864      &lt;x:ref>test&lt;/x:ref>
865      &lt;x:ref>alias1&lt;/x:ref>
866      &lt;x:ref>alias 2&lt;/x:ref></artwork>
867  </figure>
868  <t>
869    are equivalent to...:
870  </t>
871  <figure>
872    <artwork type="example">
873      &lt;xref target="test">test&lt;/xref>
874      &lt;xref target="test">alias1&lt;/xref>
875      &lt;xref target="test">alias 2&lt;/xref></artwork>
876  </figure>
877</section>
878
879<section title="&lt;source> element" anchor="ext.element.source">
880  <iref item="Extension Elements" subitem="source" primary="true"/>
881  <iref item="source Extension Element" primary="true"/>
882  <x:anchor-alias value="source"/>
883  <t>
884    Can be used to enhance a &lt;reference> with information about the
885    location for the XML source. This can be used by the &lt;xref>
886    processing code to automatically extract the target section number.
887  </t>
888  <figure>
889    <preamble>
890      For example:
891    </preamble>
892    <artwork type="example">
893      ...
894      &lt;xref target="RFC2616" x:fmt="of" x:rel="#PUT" />
895      ...
896   
897      &lt;reference target="RFC2616"/>
898        ...
899        &lt;x:source href="rfc2616.xml"/>
900        ...
901    </artwork>
902  </figure>
903</section>
904
905<section title="&lt;sup> element" anchor="ext.element.sup">
906  <iref item="Extension Elements" subitem="sup" primary="true"/>
907  <iref item="sup Extension Element" primary="true"/>
908  <x:anchor-alias value="sup"/>
909  <t>
910    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"/>.
911  </t>
912  <t>
913    Note: the down conversion to RFC2629 format replaces
914    "x<x:sup>y</x:sup>" by "x^y".
915  </t>
916</section>
917
918<section title="Extensions to Xml2rfc &lt;iref&gt; element" anchor="ext-rfc2629.iref">
919<t>
920  The extension attribute below is allowed on the standard &lt;iref&gt; element:
921  <list style="symbols">
922    <t>x:for-anchor specifies that the &lt;iref&gt; will also be automatically
923    inserted whenever the specified anchor is cross-referenced -- this may
924    save entering lots of &lt;iref&gt; instances. As a special case, a value of
925    "" (empty string) refers to the anchor attribute of the closest ancestor.</t>
926  </list>
927</t>
928</section>
929
930<section title="Extensions to Xml2rfc &lt;list&gt; element" anchor="ext-rfc2629.list">
931<t>
932  The extension attribute below is allowed on the standard &lt;list&gt; element:
933  <list style="symbols">
934    <t>x:indent specifies the amount of indentation for list items in hanging
935    lists. This can be useful when the output format, such as XSL-FO, does not
936    support automatical formatting. The value takes an XSL-FO width, such as "5em".
937    The default is <spanx>length of longest label in characters</spanx> times
938    <spanx>0.8em</spanx>.</t>
939  </list>
940</t>
941<t>
942  Also, the &lt;list&gt; element can take &lt;x:<x:ref>lt</x:ref>&gt; child elements instead of
943  &lt;t&gt;, allowing to insert multiple paragraphs into a single list item.
944</t>
945</section>
946
947<section title="Extensions to Xml2rfc &lt;section&gt; element" anchor="ext-rfc2629.section">
948<t>
949  The extension attribute below is allowed on the standard &lt;list&gt; element:
950  <list style="symbols">
951    <t>x:fixed-section-number can be used to specify a fixed section number.
952    This can be useful when formatting historic documents that used a different
953    numbering style.</t>
954  </list>
955</t>
956</section>
957
958<section title="Extensions to Xml2rfc &lt;xref&gt; element" anchor="ext-rfc2629.xref">
959<t>
960  Three extension attributes are allowed on the standard &lt;xref&gt; element:
961  <list style="numbers">
962    <t>x:sec can be specified to point to a specific section of the referenced document,</t>
963    <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>
964    <t>x:fmt defines the text format to be used.</t>
965  </list>
966</t>
967<t>
968  The following formats are defined for the x:fmt attribute:
969  <list style="hanging">
970    <t hangText=", (Comma)">
971      [<spanx>reference</spanx>], Section <spanx>sec</spanx>
972    </t>
973    <t hangText="()">
974      [<spanx>reference</spanx>] (Section <spanx>sec</spanx>)
975    </t>
976    <t hangText="anchor">
977      Like the default format, but without brackets.
978    </t>
979    <t hangText="of">
980      Section <spanx>sec</spanx> of [<spanx>reference</spanx>]
981    </t>
982    <t hangText="number">
983      <spanx>sec</spanx>
984    </t>
985    <t hangText="none">
986      No output (can be used to have xrefs to references without
987      having them rendered as such)
988    </t>
989    <t hangText="sec">
990      Section <spanx>sec</spanx>
991    </t>
992  </list>
993</t>
994<t>
995  These extensions are currently only supported for &lt;xref&gt; elements without
996  child nodes.
997</t>
998<t>
999  If the processor knows how to reference the target section, it will generate
1000  a link directly to the target section, such as in <xref target="RFC2119" x:fmt="," x:sec="5"/>.
1001</t>
1002</section>
1003
1004</section>
1005
1006<section title="Utilities" anchor="utilities">
1007
1008<section title="Checking References" anchor="checking-references">
1009<t>
1010  <spanx style="verb">check-references.xslt</spanx> can be used to check
1011  all references to RFC- and ID-series IETF publications and to W3C publications (note
1012  this script requires local copies of
1013  <eref target="ftp://ftp.isi.edu/in-notes/rfc-index.xml"/> and
1014  <eref target="http://www.w3.org/2002/01/tr-automation/tr.rdf"/> and
1015  will use the XML status information provided at <eref target="http://tools.ietf.org/"/>).
1016</t>
1017<t>
1018  If the document is supposed to be published on the IETF standards track,
1019  the desired level can be specified using the parameter <spanx style='verb'>intended-level</spanx>
1020  as 'PROPOSED', 'DRAFT' or 'STANDARD'.
1021</t>
1022<figure>
1023<preamble>
1024For instance, as of 2006-08-06, the script produces for <eref target="http://greenbytes.de/tech/webdav/rfc2518.xml"/>:
1025</preamble>
1026<artwork type="example">
1027> saxon rfc2518.xml check-references.xslt
1028
1029Normative References:
1030ISO-11578: not checked
1031ISO-639: not checked
1032ISO-8601: not checked
1033REC-xml-19980210: [FirstEdition] obsoleted by REC-xml-20001006
1034REC-xml-names-19990114: [REC] obsoleted by PER-xml-names-20060614
1035RFC1766: [PROPOSED STANDARD] obsoleted by RFC3066 RFC3282
1036RFC2068: [PROPOSED STANDARD] obsoleted by RFC2616
1037RFC2069: [PROPOSED STANDARD] obsoleted by RFC2617
1038RFC2119: [BEST CURRENT PRACTICE] (-> BCP0014) ok
1039RFC2141: [PROPOSED STANDARD] ok
1040RFC2277: [BEST CURRENT PRACTICE] (-> BCP0018) ok
1041RFC2396: [DRAFT STANDARD] obsoleted by RFC3986
1042RFC2279: [DRAFT STANDARD] obsoleted by RFC3629
1043
1044Informational References:
1045REC-PICS-labels-961031: [REC] ok
1046RFC1807: [INFORMATIONAL] ok
1047RFC2026: [BEST CURRENT PRACTICE] (-> BCP0009) ok
1048RFC2291: [INFORMATIONAL] ok
1049RFC2376: [INFORMATIONAL] obsoleted by RFC3023
1050RFC2413: [INFORMATIONAL] ok
1051USMARC: not checked
1052WF: not checked
1053</artwork></figure>
1054<t>
1055  Recognized formats in the &lt;seriesInfo> element are:
1056  <list style="symbols">
1057    <t>for RFCs, the name attribute must be "RFC", and the value attribute must
1058    be the number of the RFC,</t>
1059    <t>for Internet Drafs, the name attribute must be "ID" or "Internet-Draft", and the value attribute must
1060    be the file name of the draft (including the two-digit running number, but excluding a file extension),</t>
1061    <t>for W3C documents, the name attribute must be "W3C", must start with "W3C&#160;", or
1062    must start with "World Wide Web Consortium&#160;", and the value attribute
1063    must be the "shorthand" name of the specification, such as "REC-xml-19980210".</t>
1064  </list>
1065</t>
1066
1067</section>
1068
1069<section title="Generating Graphs from References">
1070<t>
1071  <spanx style="verb">gen-reference-graph.xslt</spanx> generates a graph
1072  of RFC dependencies, using the same base data as in <spanx style="verb">check-references.xslt</spanx>
1073  (see <xref target="checking-references"/>). Its output is a "dot" file,
1074  to be processed by GraphViz (see <eref target="http://www.graphviz.org/"/>).
1075</t>
1076<figure>
1077<preamble>
1078The picture below shows the RFC dependencies in RFC2629.
1079</preamble>
1080<artwork src="rfc2629xslt-fig2.png" type="image/png">
1081(PNG output obtained from GraphViz)
1082</artwork>
1083</figure>
1084</section>
1085
1086<section title="Producing reference entries for books">
1087<t>
1088  <spanx style="verb">amazon-asin.xslt</spanx> uses the Amazon web services
1089  to generate a &lt;reference> element for a given ASIN (ISBN).
1090</t>
1091<figure>
1092<preamble>For instance:</preamble>
1093<artwork type="example">
1094&lt;?xml version="1.0" encoding="utf-8"?>
1095&lt;references>
1096 &lt;reference target="urn:isbn:0134516591">
1097   &lt;front>
1098     &lt;title>Simple Book, The: An Introduction to Internet Management,
1099               Revised Second Edition&lt;/title>
1100     &lt;author surname="Rose"
1101                fullname="Marshall T. Rose" initials="M. T. ">
1102       &lt;organization/>
1103     &lt;/author>
1104     &lt;author surname="Marshall"
1105                fullname="Rose T. Marshall" initials="R. T.">
1106       &lt;organization/>
1107     &lt;/author>
1108     &lt;date year="1996" month="March"/>
1109   &lt;/front>
1110   &lt;seriesInfo name="Prentice Hall" value=""/>
1111 &lt;/reference>
1112&lt;/references>
1113</artwork></figure>
1114<t>
1115  Note that the resulting XML usually requires checking, in this case Amazon's
1116  database is playing tricks with Marshall's name...
1117</t>
1118</section>
1119
1120<section title="Down-converting to RFC2629bis DTD" anchor="clean-for-dtd">
1121<t>
1122  <spanx style="verb">clean-for-DTD.xslt</spanx> can be used to down-convert
1123  some extensions to a format that is supported by the base xml2rfc
1124  distribution.  Note that these extensions are experimental (feedback
1125  appreciated).
1126</t>
1127<t>
1128  The following mappings are done:
1129  <list style="symbols">
1130    <t>
1131      &lt;iref> elements inside &lt;artwork> elements are moved in front
1132      of the enclosing &lt;figure> element.
1133    </t>
1134    <t>
1135      &lt;xref> elements inside &lt;artwork> are expanded just like in
1136      regular text (that is, the markup is stripped, but the element
1137      is replaced by the applicable replacement text).
1138    </t>
1139    <t>
1140      &lt;x:<x:ref>anchor-alias</x:ref>> elements get stripped.
1141    </t>
1142    <t>
1143      &lt;x:<x:ref>bcp14</x:ref>> elements get stripped.
1144    </t>
1145    <t>
1146      &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.
1147    </t>
1148    <t>
1149      &lt;x:<x:ref>blockquote</x:ref>> elements get converted to
1150      indented text (through a &lt;list> element).
1151    </t>
1152    <t>
1153      &lt;x:<x:ref>dfn</x:ref>> elements get stripped.
1154    </t>
1155    <t>
1156      &lt;x:<x:ref>h</x:ref>> elements get stripped.
1157    </t>
1158    <t>
1159      &lt;x:<x:ref>link</x:ref>> elements get stripped.
1160    </t>
1161    <t>
1162      &lt;x:<x:ref>q</x:ref>> elements get stripped, with apostrophes
1163      added around the text.
1164    </t>
1165    <t>
1166      &lt;x:<x:ref>ref</x:ref>> elements get replaced by &lt;xref>
1167      elements, targetting either the anchor or another anchor with
1168      matching &lt;x:<x:ref>anchor-alias</x:ref>> child element.
1169    </t>
1170  </list>
1171</t>
1172</section>
1173
1174<section title="Extracting artwork" anchor="extract-artwork">
1175<t>
1176  With <spanx style="verb">extract-artwork.xslt</spanx>, artwork elements
1177  named through the "name" attribute can be extracted. This can be used
1178  to automatically check their syntax (for instance, when ABNFs appear
1179  within a figure element).
1180</t>
1181<figure><preamble>For instance:</preamble>
1182<artwork type="example">saxon rfc3986.xml extract-artwork.xslt name=uri.abnf
1183</artwork>
1184</figure>
1185<t>
1186  In addition, artwork of a specific type can be extracted, such as with:
1187</t>
1188<figure>
1189<artwork type="example">saxon rfc3986.xml extract-artwork.xslt type=abnf
1190</artwork>
1191</figure>
1192</section>
1193
1194<section title="GRRDL" anchor="grddl">
1195<t>
1196  <spanx style="verb">rfc2629grddl.xslt</spanx> extracts RDF
1197  information. This is experimental work-in-progress. See
1198  <eref target="http://www.w3.org/TR/grddl/"/> for more information.
1199</t>
1200</section>
1201</section>
1202
1203 
1204
1205</middle>
1206
1207<back>
1208<references title="Informative References">
1209
1210<reference anchor="RFC2119">
1211  <front>
1212    <title abbrev="RFC Key Words">Key words for use in RFCs to Indicate Requirement Levels</title>
1213    <author initials="S." surname="Bradner" fullname="Scott Bradner">
1214    <organization>Harvard University</organization>
1215    <address>
1216      <email>sob@harvard.edu</email>
1217    </address></author>
1218    <date month="March" year="1997"/>
1219  </front>
1220  <seriesInfo name="BCP" value="14"/>
1221  <seriesInfo name="RFC" value="2119"/>
1222</reference>
1223
1224<reference anchor="RFC2616">
1225  <front>
1226  <title abbrev="HTTP/1.1">Hypertext Transfer Protocol -- HTTP/1.1</title>
1227  <author initials="R.T." surname="Fielding" fullname="Roy T. Fielding">
1228  <organization>University of California, Irvine, Information and Computer Science</organization>
1229  <address>
1230  <postal>
1231  <street/>
1232  <city>Irvine</city>
1233  <region>CA</region>
1234  <code>92697-3425</code>
1235  <country>US</country></postal>
1236  <phone>+1 949 824 1715</phone>
1237  <email>fielding@ics.uci.edu</email></address></author>
1238  <author initials="J." surname="Gettys" fullname="James Gettys">
1239  <organization>World Wide Web Consortium, MIT Laboratory for Computer Science</organization>
1240  <address>
1241  <postal>
1242  <street>545 Technology Square</street>
1243  <city>Cambridge</city>
1244  <region>MA</region>
1245  <code>02139</code>
1246  <country>US</country></postal>
1247  <phone/>
1248  <facsimile>+1 617 258 8682</facsimile>
1249  <email>jg@w3.org</email></address></author>
1250  <author initials="J.C." surname="Mogul" fullname="Jeffrey C. Mogul">
1251  <organization>Compaq Computer Corporation, Western Research Laboratory</organization>
1252  <address>
1253  <postal>
1254  <street>250 University Avenue</street>
1255  <city>Palo Alto</city>
1256  <region>CA</region>
1257  <code>94301</code>
1258  <country>US</country></postal>
1259  <phone/>
1260  <email>mogul@wrl.dec.com</email></address></author>
1261  <author initials="H.F." surname="Nielsen" fullname="Henrik Frystyk Nielsen">
1262  <organization>World Wide Web Consortium, MIT Laboratory for Computer Science</organization>
1263  <address>
1264  <postal>
1265  <street>545 Technology Square</street>
1266  <city>Cambridge</city>
1267  <region>MA</region>
1268  <code>02139</code>
1269  <country>US</country></postal>
1270  <phone/>
1271  <facsimile>+1 617 258 8682</facsimile>
1272  <email>frystyk@w3.org</email></address></author>
1273  <author initials="L." surname="Masinter" fullname="Larry Masinter">
1274  <organization>Xerox Corporation</organization>
1275  <address>
1276  <postal>
1277  <street>3333 Coyote Hill Road</street>
1278  <city>Palo Alto</city>
1279  <region>CA</region>
1280  <code>94034</code>
1281  <country>US</country></postal>
1282  <phone/>
1283  <email>masinter@parc.xerox.com</email></address></author>
1284  <author initials="P.J." surname="Leach" fullname="Paul J. Leach">
1285  <organization>Microsoft Corporation</organization>
1286  <address>
1287  <postal>
1288  <street>1 Microsoft Way</street>
1289  <city>Redmond</city>
1290  <region>WA</region>
1291  <code>98052</code>
1292  <country>US</country></postal>
1293  <phone/>
1294  <email>paulle@microsoft.com</email></address></author>
1295  <author initials="T." surname="Berners-Lee" fullname="Tim Berners-Lee">
1296  <organization>World Wide Web Consortium, MIT Laboratory for Computer Science</organization>
1297  <address>
1298  <postal>
1299  <street>545 Technology Square</street>
1300  <city>Cambridge</city>
1301  <region>MA</region>
1302  <code>02139</code>
1303  <country>US</country></postal>
1304  <phone>+1 617 258 8682</phone>
1305  <facsimile/>
1306  <email>timbl@w3.org</email></address></author>
1307  <date month="June" year="1999"/>
1308  </front>
1309  <seriesInfo name="RFC" value="2616"/>
1310</reference>
1311
1312<reference anchor='RFC2629'>
1313  <front>
1314    <title>Writing I-Ds and RFCs using XML</title>
1315    <author initials='M.T.' surname='Rose' fullname='Marshall T. Rose'>
1316      <organization>Invisible Worlds, Inc.</organization>
1317      <address>
1318        <postal>
1319          <street>660 York Street</street>
1320          <city>San Francisco</city>
1321          <region>CA</region>
1322          <code>94110</code>
1323          <country>US</country>
1324        </postal>
1325        <phone>+1 415 695 3975</phone>
1326        <email>mrose@not.invisible.net</email>
1327        <uri>http://invisible.net/</uri>
1328      </address>
1329    </author>
1330    <date month='June' year='1999' />
1331  </front>
1332  <seriesInfo name='RFC' value='2629' />
1333</reference>
1334
1335<reference anchor='RFC2648'>
1336  <front>
1337    <title>A URN Namespace for IETF Documents</title>
1338    <author initials='R.' surname='Moats' fullname='Ryan Moats'>
1339      <organization>AT&amp;T</organization>
1340      <address>
1341      <postal>
1342        <street>15621 Drexel Circle</street>
1343        <city>Omaha</city>
1344        <region>NE</region>
1345        <code>68135-2358</code>
1346        <country>US</country>
1347      </postal>
1348      <email>jayhawk@att.com</email></address>
1349    </author>
1350    <date month='August' year='1999' />
1351  </front>
1352  <seriesInfo name='RFC' value='2648' />
1353</reference>
1354
1355<reference anchor='RFC2731'>
1356  <front>
1357    <title>Encoding Dublin Core Metadata in HTML</title>
1358    <author initials='J.A.' surname='Kunze' fullname='John A. Kunze'>
1359      <organization>University of California, San Francisco,  Center for Knowledge Management</organization>
1360      <address>
1361        <postal>
1362          <street>530 Parnassus Ave</street>
1363          <street>Box 0840</street>
1364          <city>San Francisco</city>
1365          <region>CA</region>
1366          <code>94143-0840</code>
1367          <country>US</country>
1368        </postal>
1369        <facsimile>+1 415 476 4653</facsimile>
1370        <email>jak@ckm.ucsf.edu</email>
1371      </address>
1372    </author>
1373    <date month='December' year='1999' />
1374  </front>
1375  <seriesInfo name='RFC' value='2731' />
1376</reference>
1377
1378<reference anchor="RFC5234">
1379  <front>
1380    <title abbrev="ABNF for Syntax Specifications">Augmented BNF for Syntax Specifications: ABNF</title>
1381    <author initials="D." surname="Crocker" fullname="Dave Crocker" role="editor">
1382      <organization>Brandenburg InternetWorking</organization>
1383      <address>
1384      <postal>
1385      <street>675 Spruce Dr.</street>
1386      <city>Sunnyvale</city>
1387      <region>CA</region>
1388      <code>94086</code>
1389      <country>US</country></postal>
1390      <phone>+1.408.246.8253</phone>
1391      <email>dcrocker@bbiw.net</email></address> 
1392    </author>
1393    <author initials="P." surname="Overell" fullname="Paul Overell">
1394      <organization>THUS plc.</organization>
1395      <address>
1396      <postal>
1397      <street>1/2 Berkeley Square</street>
1398      <street>99 Berkely Street</street>
1399      <city>Glasgow</city>
1400      <code>G3 7HR</code>
1401      <country>UK</country></postal>
1402      <email>paul.overell@thus.net</email></address>
1403    </author>
1404    <date month="January" year="2008"/>
1405  </front>
1406  <seriesInfo name="STD" value="68"/>
1407  <seriesInfo name="RFC" value="5234"/>
1408</reference>
1409
1410<reference anchor="HTML" target="http://www.w3.org/TR/html401/">
1411  <front>
1412    <title>HTML 4.01 Specification</title>
1413    <author initials="D." surname="Raggett" fullname="David Raggett">
1414      <organization>W3C</organization>
1415      <address>
1416        <email>dsr@w3.org</email>
1417      </address>
1418    </author>
1419    <author initials="A." surname="Hors" fullname="Arnaud Le Hors">
1420      <organization>W3C</organization>
1421    </author>
1422    <author initials="I." surname="Jacobs" fullname="Ian Jacobs">
1423      <organization>W3C</organization>
1424    </author>
1425    <date month="December" day="24" year="1999" />
1426  </front>
1427  <seriesInfo name="W3C" value="REC-html401-19991224" />
1428</reference>
1429
1430<reference anchor="XHTML2" target="http://www.w3.org/TR/xhtml2">
1431  <front>
1432    <title>XHTML&#8482; 2.0</title>
1433    <author initials="J." surname="Axelsson" fullname="Jonny Axelsson">
1434      <organization>Opera Software</organization>
1435    </author>
1436    <author initials="M." surname="Birbeck" fullname="Mark Birbeck">
1437      <organization>x-port.net</organization>
1438    </author>
1439    <author initials="M." surname="Dubinko" fullname="Micah Dubinko">
1440      <organization></organization>
1441    </author>
1442    <author initials="B." surname="Epperson" fullname="Beth Epperson">
1443      <organization>Websense</organization>
1444    </author>
1445    <author initials="M." surname="Ishikawa" fullname="Masayasu Ishikawa">
1446      <organization>W3C</organization>
1447    </author>
1448    <author initials="S." surname="McCarron" fullname="Shane McCarron">
1449      <organization>Applied Testing and Technology</organization>
1450    </author>
1451    <author initials="A." surname="Navarro" fullname="Ann Navarro">
1452      <organization>WebGeek, Inc.</organization>
1453    </author>
1454    <author initials="S." surname="Pemberton" fullname="Steven Pemberton">
1455      <organization>CWI</organization>
1456    </author>
1457    <date month="July" day="26" year="2006" />
1458  </front>
1459  <seriesInfo name="W3C" value="WD-xhtml2-20060726" />
1460</reference>
1461
1462<reference anchor="XSL-FO" target="http://www.w3.org/TR/2006/REC-xsl11-20061205/">
1463  <front>
1464    <title>Extensible Stylesheet Language (XSL) Version 1.1</title>
1465    <author initials="A." surname="Berglund" fullname="Anders Berglund">
1466      <organization>IBM</organization>
1467      <address>
1468        <email>alrb@us.ibm.com</email>
1469      </address>
1470    </author>
1471    <date month="Dec" day="5" year="2006" />
1472  </front>
1473  <seriesInfo name="W3C" value="REC-xsl11-20061205" />
1474</reference>
1475
1476<reference anchor="RNC" target="http://www.oasis-open.org/committees/relax-ng/compact-20021121.html">
1477  <front>
1478    <title>RELAX NG Compact Syntax</title>
1479    <author initials="J." surname="Clark" fullname="James Clark">
1480      <organization/>
1481      <address>
1482        <email>jjc@jclark.com</email>
1483      </address>
1484    </author>
1485    <date month="Nov" day="21" year="2002" />
1486  </front>
1487  <seriesInfo name="OASIS" value=""/>
1488</reference>
1489
1490</references>
1491
1492  <section title="RELAX NG Compact Schema" anchor="grammar">
1493  <iref item="Grammar" primary="true"/>
1494  <iref item="Schema" primary="true"/>
1495  <iref item="RELAX NG Compact Schema" primary="true"/>
1496  <t>
1497    The RelaxNG schema (<xref target="RNC"/>) below can be used to validate
1498    input documents (for instance, with <eref target="http://www.thaiopensource.com/relaxng/jing.html">Jing</eref>).
1499  </t>
1500  <t>
1501    <spanx>Note that this is work in progress, and doesn't yet cover all
1502    extensions completely.</spanx>
1503  </t>
1504  <figure>
1505    <artwork type="application/relax-ng-compact-syntax" name="rfc2629-ext.rnc" x:extraction-note="# Automatically extracted from rfc2629xslt.xml. DO NOT EDIT!&#10;">
1506<spanx># WORK IN PROGRESS! PLEASE REPORT PROBLEMS TO THE AUTHOR.</spanx>
1507
1508<spanx># Define our extension namespace</spanx>
1509namespace x = "http://purl.org/net/xml2rfc/ext"
1510
1511<spanx># Define GRDDL namespace</spanx>
1512namespace grddl = "http://www.w3.org/2003/g/data-view#"
1513
1514<spanx># Include rfc2629bis RNC grammar</spanx>
1515include "rfc2629.rnc" {
1516 
1517  <spanx># Redefine &lt;artwork> to allow markup</spanx>
1518  artwork =
1519    element artwork {
1520      attlist.artwork,
1521      (TEXT
1522        <spanx style="strong">| eref</spanx> 
1523        <spanx style="strong">| iref</spanx> 
1524        <spanx style="strong">| spanx</spanx> 
1525        <spanx style="strong">| xref</spanx>
1526        <spanx style="strong">| <x:ref>x_bb</x:ref></spanx>
1527        <spanx style="strong">| <x:ref>x_bc</x:ref></spanx>
1528        <spanx style="strong">| <x:ref>x_bt</x:ref></spanx>
1529        <spanx style="strong">| <x:ref>x_length-of</x:ref></spanx>
1530        <spanx style="strong">| <x:ref>x_ref</x:ref></spanx>
1531        <spanx style="strong">| <x:ref>x_span</x:ref></spanx>
1532        <spanx style="strong">| <x:ref>x_x</x:ref></spanx>)*
1533    }
1534
1535  <spanx># Redefine &lt;c> to allow our extension elements</spanx>
1536  c =
1537    element c {
1538      attlist.c,
1539      (TEXT
1540        | xref
1541        | eref
1542        | iref
1543        | cref
1544        | spanx
1545        <spanx style="strong">| <x:ref>x_ref</x:ref></spanx>)*
1546    }
1547
1548  <spanx># Redefine &lt;cref> to allow more child elements</spanx>
1549  cref =
1550    element cref {
1551      attlist.cref,
1552      (TEXT
1553        | eref)*
1554    }
1555
1556  <spanx># Redefine &lt;list> element to allow &lt;x:<x:ref>lt</x:ref>> child elements</spanx>
1557  \list =
1558    element list {
1559      attlist.list,
1560      (t+ <spanx style="strong">| <x:ref>x_lt</x:ref>+</spanx>)
1561    }   
1562   
1563  <spanx># Redefine &lt;preamble> to allow our extension elements</spanx>
1564  preamble =
1565    element preamble {
1566      attlist.preamble,
1567      (TEXT
1568        | xref
1569        | eref
1570        | iref
1571        | cref
1572        | spanx
1573        <spanx style="strong">| <x:ref>x_anchor-alias</x:ref></spanx>)*
1574    }
1575
1576  <spanx># Redefine &lt;postamble> to allow our extension elements</spanx>
1577  postamble =
1578    element postamble {
1579      attlist.postamble,
1580      (TEXT
1581        | xref
1582        | eref
1583        | iref
1584        | cref
1585        | spanx
1586        <spanx style="strong">| <x:ref>x_bcp14</x:ref></spanx>)*
1587    }
1588
1589  <spanx># Redefine &lt;reference> to allow our extension elements</spanx>
1590  reference =
1591    element reference {
1592      attlist.reference,
1593      front,
1594      seriesInfo*,
1595      format*,
1596      annotation*,
1597      <spanx style="strong"><x:ref>x_source</x:ref>?</spanx>
1598    }
1599
1600  <spanx># Redefine &lt;rfc> to allow our extension elements</spanx>
1601  rfc =
1602    element rfc {
1603      attlist.rfc,
1604      <spanx style="strong"><x:ref>x_link</x:ref>*,</spanx>
1605      <spanx style="strong"><x:ref>x_assign-section-number</x:ref>*,</spanx>
1606      front,
1607      middle,
1608      back?
1609    }
1610
1611  <spanx># Redefine &lt;section> to allow our extension elements</spanx>
1612  section =
1613    element section {
1614      attlist.section,
1615      (t
1616       | figure
1617       | texttable
1618       | iref
1619       | section
1620       <spanx style="strong">| <x:ref>x_anchor-alias</x:ref></spanx>
1621       <spanx style="strong">| <x:ref>x_blockquote</x:ref></spanx>)*
1622    }
1623
1624  <spanx># Redefine &lt;spanx> to allow some markup</spanx>
1625  spanx =
1626    element spanx {
1627      attlist.spanx,
1628      (TEXT
1629        <spanx style="strong">| iref</spanx>
1630        <spanx style="strong">| xref</spanx>
1631        <spanx style="strong">| <x:ref>x_ref</x:ref></spanx>)*
1632    }
1633
1634  <spanx># Redefine &lt;t> to allow our extension elements</spanx>
1635  t =
1636    element t {
1637      attlist.t,
1638      (TEXT
1639       | \list
1640       | figure
1641       | xref
1642       | eref
1643       | iref
1644       | cref
1645       | spanx
1646       | vspace
1647       <spanx style="strong">| <x:ref>x_anchor-alias</x:ref></spanx>
1648       <spanx style="strong">| <x:ref>x_bcp14</x:ref></spanx>
1649       <spanx style="strong">| <x:ref>x_dfn</x:ref></spanx>
1650       <spanx style="strong">| <x:ref>x_h</x:ref></spanx>
1651       <spanx style="strong">| <x:ref>x_q</x:ref></spanx>
1652       <spanx style="strong">| <x:ref>x_ref</x:ref></spanx>
1653       <spanx style="strong">| <x:ref>x_sup</x:ref></spanx>)*
1654    }
1655}
1656
1657<spanx># Extend attribute set for &lt;iref> (see <xref target="ext-rfc2629.iref"/>)</spanx>
1658attlist.iref &amp;=
1659  attribute x:for-anchor { ATEXT }?
1660
1661<spanx># Extend attribute set for &lt;list> (see <xref target="ext-rfc2629.list"/>)</spanx>
1662attlist.list &amp;=
1663  attribute x:indent { ATEXT }?
1664
1665<spanx># Extend attribute set for &lt;preamble></spanx>
1666attlist.preamble &amp;=
1667  attribute anchor { xsd:ID }?
1668
1669<spanx># Extend attribute set for &lt;rfc></spanx>
1670attlist.rfc &amp;=
1671  attribute grddl:transformation { ATEXT }?
1672
1673<spanx># Extend attribute set for &lt;section> (see <xref target="ext-rfc2629.section"/>)</spanx>
1674attlist.section &amp;=
1675  attribute x:fixed-section-number { ATEXT }?
1676
1677<spanx># Allow anchor attribute on &lt;spanx></spanx>
1678attlist.spanx &amp;=
1679  attribute anchor { xsd:ID }?
1680
1681<spanx># Extend attribute set for &lt;xref> (see <xref target="ext-rfc2629.xref"/>)</spanx>
1682attlist.xref &amp;=
1683  attribute x:fmt  { "()" | "," | "anchor" | "of" | "number" | "sec" |
1684                     "none" }?,
1685  attribute x:rel  { ATEXT }?,
1686  attribute x:sec  { ATEXT }?
1687
1688<spanx anchor="x_anchor-alias"><iref item="anchor-alias Extension Element"/><iref item="Extension Elements" subitem="anchor-alias"
1689/># Aliasing of anchors (see <xref target="ext.element.anchor-alias"/>)</spanx>
1690<x:ref>x_anchor-alias</x:ref> =
1691  element x:anchor-alias {
1692    attribute value { TEXT },
1693    empty
1694  }
1695
1696<spanx anchor="x_assign-section-number"><iref item="assign-section-number Extension Element"/><iref item="Extension Elements" subitem="assign-section-number"
1697/># Setting section numbers for internally generated sections
1698# (experimental)</spanx>
1699<x:ref>x_assign-section-number</x:ref> =
1700  element x:assign-section-number {
1701    attribute builtin-target { "authors" },
1702    attribute number { TEXT },
1703    empty
1704  }
1705
1706<spanx anchor="x_bb"><iref item="bb Extension Element"/><iref item="Extension Elements" subitem="bb"
1707/># Bottom line of box drawing (see <xref target="ext.element.bb"/>)</spanx>
1708<x:ref>x_bb</x:ref> =
1709  element x:bb {
1710    (TEXT
1711      | iref
1712      | xref
1713      | <x:ref>x_bb</x:ref>
1714      | <x:ref>x_bc</x:ref>
1715      | <x:ref>x_bt</x:ref>
1716      | <x:ref>x_ref</x:ref>)*
1717  }
1718
1719<spanx anchor="x_bc"><iref item="bc Extension Element"/><iref item="Extension Elements" subitem="bc"
1720/># Center line of box drawing (see <xref target="ext.element.bc"/>)</spanx>
1721<x:ref>x_bc</x:ref> =
1722  element x:bc {
1723    (TEXT
1724      | iref
1725      | xref
1726      | <x:ref>x_bb</x:ref>
1727      | <x:ref>x_bc</x:ref>
1728      | <x:ref>x_bt</x:ref>
1729      | <x:ref>x_ref</x:ref>)*
1730  }
1731
1732<spanx anchor="x_bcp14"><iref item="bcp14 Extension Element"/><iref item="Extension Elements" subitem="bcp14"
1733/># BCP14/RFC2119 keywords (see <xref target="ext.element.bcp14"/>)</spanx>
1734<x:ref>x_bcp14</x:ref> =
1735  element x:bcp14 {
1736    "MAY"
1737    | "MUST"
1738    | "MUST NOT"
1739    | "NOT RECOMMENDED"
1740    | "OPTIONAL"
1741    | "RECOMMENDED"
1742    | "REQUIRED"
1743    | "SHALL"
1744    | "SHALL NOT"
1745    | "SHOULD"
1746    | "SHOULD NOT"
1747  }
1748 
1749<spanx anchor="x_blockquote"><iref item="blockquote Extension Element"/><iref item="Extension Elements" subitem="blockquote"
1750/># Blockquote (see <xref target="ext.element.blockquote"/>)</spanx>
1751<x:ref>x_blockquote</x:ref> =
1752  element x:blockquote {
1753    attribute cite { URI }?,
1754    t+
1755  }
1756
1757<spanx anchor="x_bt"><iref item="bt Extension Element"/><iref item="Extension Elements" subitem="bt"
1758/># Top line of box drawing (see <xref target="ext.element.bt"/>)</spanx>
1759<x:ref>x_bt</x:ref> =
1760  element x:bt {
1761    (TEXT
1762      | iref
1763      | xref
1764      | <x:ref>x_bb</x:ref>
1765      | <x:ref>x_bc</x:ref>
1766      | <x:ref>x_bt</x:ref>
1767      | <x:ref>x_ref</x:ref>)*
1768  }
1769
1770<spanx anchor="x_dfn"><iref item="dfn Extension Element"/><iref item="Extension Elements" subitem="dfn"
1771/># Definition (see <xref target="ext.element.dfn"/>)</spanx>
1772<x:ref>x_dfn</x:ref> =
1773  element x:dfn {
1774    (TEXT
1775      | iref)*
1776  }
1777 
1778<spanx anchor="x_h"><iref item="h Extension Element"/><iref item="Extension Elements" subitem="h"
1779/># Heading (see <xref target="ext.element.h"/>)</spanx>
1780<x:ref>x_h</x:ref> =
1781  element x:h {
1782    TEXT
1783  }
1784
1785<spanx anchor="x_length-of"><iref item="length-of Extension Element"/><iref item="Extension Elements" subitem="length-of"
1786/># Length Measurement (see <xref target="ext.element.length-of"/>)</spanx>
1787<x:ref>x_length-of</x:ref> =
1788  element x:length-of {
1789    attribute indented { NUMBER }?,
1790    attribute target { xsd:IDREF },
1791    empty
1792  }
1793
1794<spanx anchor="x_link"><iref item="link Extension Element"/><iref item="Extension Elements" subitem="link"
1795/># Link (see <xref target="ext.element.link"/>)</spanx>
1796<x:ref>x_link</x:ref> =
1797  element x:link {
1798    attribute href { URI },
1799    attribute title { TEXT }?,
1800    attribute rel { TEXT },
1801    empty
1802  }
1803 
1804<spanx anchor="x_lt"><iref item="lt Extension Element"/><iref item="Extension Elements" subitem="lt"
1805/># Extended list item (see <xref target="ext.element.lt"/>)</spanx>
1806<x:ref>x_lt</x:ref> =
1807  element x:lt {
1808    attribute anchor { xsd:ID }?,
1809    attribute hangText { TEXT }?,
1810    t+
1811  }
1812
1813<spanx anchor="x_q"><iref item="q Extension Element"/><iref item="Extension Elements" subitem="q"
1814/># Inline quote (see <xref target="ext.element.q"/>)</spanx>
1815<x:ref>x_q</x:ref> =
1816  element x:q {
1817    TEXT
1818  }
1819
1820<spanx anchor="x_ref"><iref item="ref Extension Element"/><iref item="Extension Elements" subitem="ref"
1821/># Anchor reference (see <xref target="ext.element.ref"/>)</spanx> 
1822<x:ref>x_ref</x:ref> =
1823  element x:ref {
1824    TEXT
1825  }
1826
1827<spanx anchor="x_source"><iref item="source Extension Element"/><iref item="Extension Elements" subitem="source"
1828/># source information (see <xref target="ext.element.source"/>)</spanx> 
1829<x:ref>x_source</x:ref> =
1830  element x:source {
1831    attribute basename { ATEXT }?,
1832    attribute href { URI },
1833    empty
1834  }
1835
1836<spanx anchor="x_sup"><iref item="sup Extension Element"/><iref item="Extension Elements" subitem="sup"
1837/># superscript (see <xref target="ext.element.sup"/>)</spanx>
1838<x:ref>x_sup</x:ref> =
1839  element x:sup {
1840    TEXT
1841  }
1842
1843<spanx anchor="x_span"><iref item="span Extension Element"/><iref item="Extension Elements" subitem="span"
1844/># Inline Span <!--(see <xref target="ext.element.span"/>)--></spanx>
1845<x:ref>x_span</x:ref> =
1846  element x:span {
1847    attribute anchor { xsd:ID }?,
1848    TEXT
1849  }
1850
1851<spanx anchor="x_x"><iref item="x Extension Element"/><iref item="Extension Elements" subitem="x"
1852/># Nop (for alignment in source)</spanx>
1853<x:ref>x_x</x:ref> =
1854  element x:x {
1855    empty
1856  }
1857</artwork></figure>
1858  </section>
1859 
1860  <section title="Implementation Notes">
1861 
1862  <section title="Recognized type attributes for &lt;artwork> element">
1863  <t>
1864    Specific values in the &lt;artwork> element's "type" attribute are
1865    recognized and cause a different visual style to be used:
1866  </t>
1867  <texttable>
1868    <ttcol>Media Type</ttcol>
1869    <ttcol>Comment</ttcol>
1870   
1871    <c>abnf</c><c>ABNF as per <xref target="RFC5234"/></c>
1872    <c>abnf2616</c><c>ABNF as per <xref target="RFC2616" x:fmt="," x:sec="2.1" /></c>
1873    <c>application/relax-ng-compact-syntax</c><c>Relax NG Compact Syntax as per <xref target="RNC"/></c>
1874    <c>application/xml-dtd</c><c>XML DTD</c>
1875    <c>message/http; msgtype="request"</c><c>HTTP message, as per <xref target="RFC2616" x:fmt="," x:sec="19.1" /></c>
1876    <c>message/http; msgtype="response"</c><c>HTTP message, as per <xref target="RFC2616" x:fmt="," x:sec="19.1" /></c>
1877  </texttable>
1878  </section>
1879 
1880  </section>
1881 
1882  <section title="License" anchor="license">
1883  <t>
1884Copyright (c) 2006-2008, Julian Reschke (julian.reschke@greenbytes.de)
1885  </t>
1886  <t>
1887All rights reserved.
1888  </t>
1889  <t>
1890Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1891  <list style="symbols">
1892    <t>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</t>
1893    <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>
1894    <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>
1895  </list>
1896  </t>
1897  <t>
1898THIS 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.
1899  </t>
1900  </section>
1901
1902  <section title="Change Logs">
1903   
1904 
1905    <section title="Package">
1906      <t><list style="hanging">
1907<t hangText="2006-01-01">
1908    Switch to BSD License.
1909</t>
1910<t hangText="2007-01-12">
1911    Update to xml2rfc v1.33pre2.
1912</t>
1913<t hangText="2007-03-31">
1914    Update to xml2rfc v1.33pre3.
1915</t>
1916<t hangText="2007-05-01">
1917    Add XSLT test cases.
1918</t>
1919      </list></t>
1920    </section>
1921   
1922    <section title="amazon-asin.xslt">
1923    <t><list style="hanging">
1924<t hangText="2003-11-16">
1925     Initial release.
1926</t>
1927<t hangText="2005-04-02">
1928     Fix two DTD issues.
1929</t>
1930    </list></t>
1931    </section>
1932
1933    <section title="check-references.xslt">
1934    <t><list style="hanging">
1935<t hangText="2003-11-16">
1936     Initial release.
1937</t>
1938<t hangText="2003-11-16">
1939     Initial release.
1940</t>
1941<t hangText="2004-05-11">
1942     Add document status; print references type.
1943</t>
1944<t hangText="2005-01-01">
1945     Add experimental check for ID status.
1946</t>
1947<t hangText="2005-04-01">
1948     Add fixes from Bill Fenner.
1949</t>
1950<t hangText="2005-12-03">
1951    Add checks against local copy of <eref target="http://www.w3.org/2002/01/tr-automation/tr.rdf"/>
1952</t>
1953<t hangText="2006-07-22">
1954    Add checks for standards levels.
1955</t>
1956<t hangText="2006-08-06">
1957    "check-ietf-references.xslt" replaced by "check-references.xslt".
1958</t>
1959<t hangText="2007-01-04">
1960    Use information online at <eref target="http://tools.ietf.org/"/> to
1961    retrieve Internet-Draft status information.
1962</t>
1963<t hangText="2007-06-16">
1964    Fix bug looking up ref type when inside change markup.
1965</t>
1966    </list></t>
1967    </section>
1968   
1969    <section title="gen-reference-graph.xslt">
1970    <t><list style="hanging">
1971<t hangText="2006-09-03">
1972  New.
1973</t>
1974<t hangText="2007-06-07">
1975  Use <eref target="http://dpcarlisle.blogspot.com/2007/05/exslt-node-set-function.html">Carlisle method</eref> to define exslt:node-set in
1976  msxsml (which means that the stylesheet can now be used with MSXML as well).
1977</t>
1978<t hangText="2007-10-15">
1979  Use W3C data from tr.rdf as well (experimental).
1980</t>
1981    </list></t>
1982    </section>
1983
1984    <section title="rfc2629.xslt">
1985      <t><list style="hanging">
1986<t hangText="2001-03-28">
1987    Code rearranged, generate numbered section anchors for paragraphs (t)
1988    as well. Fixes in index handling.
1989</t>
1990<t hangText="2001-04-12">
1991    Moved HTML output into XHTML namespace.
1992</t>
1993<t hangText="2001-10-02">
1994    Fixed default location for RFCs and numbering of section references.
1995    Support ?rfc editing processing instruction.
1996</t>
1997<t hangText="2001-10-07">
1998    Made telephone number links active.
1999</t>
2000<t hangText="2001-10-08">
2001    Support for vspace element.
2002</t>
2003<t hangText="2001-10-09">
2004    Experimental support for rfc-issue PI.
2005</t>
2006<t hangText="2001-11-11">
2007    Support rfc private PI. Removed bogus code reporting the WG in the header.
2008</t>
2009<t hangText="2001-11-11">
2010    Support rfc private PI. Removed bogus code reporting the WG in the header.
2011</t>
2012<t hangText="2001-12-17">
2013    Support title attribute on references element
2014</t>
2015<t hangText="2002-01-05">
2016    Support for list/@style="@format"
2017</t>
2018<t hangText="2002-01-09">
2019    Display "closed" RFC issues as deleted
2020</t>
2021<t hangText="2002-01-14">
2022    Experimentally and optionally parse XML encountered in artwork elements
2023    (requires MSXSL).
2024</t>
2025<t hangText="2002-01-27">
2026    Some cleanup. Moved RFC issues from PIs into namespaced elements.
2027</t>
2028<t hangText="2002-01-29">
2029    Added support for sortrefs PI. Added support for figure names.
2030</t>
2031<t hangText="2002-02-07">
2032    Highlight parts of artwork which are too wide (72 characters).
2033</t>
2034<t hangText="2002-02-12">
2035    Code rearrangement for static texts. Fixes for section numbering.
2036    TOC generation rewritten.
2037</t>
2038<t hangText="2002-02-15">
2039    Support for irefs in sections; support iref @primary=true
2040</t>
2041<t hangText="2002-03-03">
2042    Moved anchor prefix into a constant. Added sanity checks on user anchor
2043    names.
2044</t>
2045<t hangText="2002-03-23">
2046    Bugfix in detection of matching org names when creating the header. Fixed
2047    sorting in subitems.
2048</t>
2049<t hangText="2002-04-02">
2050    Fix TOC link HTML generation when no TOC is generated (created broken
2051    HTML table code).
2052</t>
2053<t hangText="2002-04-03">
2054    Made rendering of references more tolerant re: missing parts.
2055</t>
2056<t hangText="2002-04-08">
2057    Fixed reference numbering when references are split into separate sections.
2058</t>
2059<t hangText="2002-04-16">
2060    Fix default namespace (shouldn't be set for HTML output method).
2061</t>
2062<t hangText="2002-04-19">
2063    Lowercase internal CSS selectors for Mozilla compliance. Do not put TOC
2064    into ul element.
2065</t>
2066<t hangText="2002-04-21">
2067    Make numbered list inside numbered lists use alphanumeric numbering.
2068</t>
2069<t hangText="2002-05-05">
2070    Updated issue/editing support.
2071</t>
2072<t hangText="2002-05-15">
2073    Bugfix for section numbering after introduction of ed:replace
2074</t>
2075<t hangText="2002-06-21">
2076    When producing private documents, do not include document status, copyright etc.
2077</t>
2078<t hangText="2002-07-08">
2079    Fix xrefs to Appendices.
2080</t>
2081<t hangText="2002-07-19">
2082    Make artwork lightyellow for easier reading. (fielding)
2083</t>
2084<t hangText="2002-10-09">
2085    Translate references title to anchor name to avoid non-uri characters. (fielding)
2086</t>
2087<t hangText="2002-10-13">
2088    Support for tocdepth PI.
2089</t>
2090<t hangText="2002-11-03">
2091    Added temporariry workaround for Mozilla/Transformiix result tree fragment problem.
2092    (search for 'http://bugzilla.mozilla.org/show_bug.cgi?id=143668')
2093</t>
2094<t hangText="2002-12-25">
2095    xref code: attempt to uppercase "section" and "appendix" when at the start
2096    of a sentence.
2097</t>
2098<t hangText="2003-02-02">
2099    fixed code for vspace blankLines="0", enhanced display for list with "format" style,
2100    got rid of HTML blockquote elements, added support for "hangIndent"
2101</t>
2102<t hangText="2003-04-10">
2103    experimental support for appendix and spanx elements
2104</t>
2105<t hangText="2003-04-19">
2106    fixed counting of list numbers in "format %" styles (one counter
2107    per unique format string). Added more spanx styles.
2108</t>
2109<t hangText="2003-05-02">
2110    experimental texttable support
2111</t>
2112<t hangText="2003-05-02">
2113    Make mailto links optional (default = none) (jre: default and PI name changed) (fielding)
2114</t>
2115<t hangText="2003-05-04">
2116    experimental support for HTML link elements; fix default for table header
2117    alignment default
2118</t>
2119<t hangText="2003-05-06">
2120    support for "background" PI.
2121</t>
2122<t hangText="2003-05-11">
2123    change %c format to lowercase alphabetic. add support for keyword
2124    elements (generate META tag). fix various HTML conformance problems.
2125    added experimental support for role attribute. do not number paragraphs
2126    in unnumbered sections. update boilerplate texts. support for
2127    "iprnotified" PI. bugfix list numbering. strip whitespace when
2128    building tel: URIs.
2129</t>
2130<t hangText="2003-05-12">
2131    more conformance fixes (layout moved into CSS, move lists and figures
2132    out of para content, do not use tables for list formatting)
2133</t>
2134<t hangText="2003-05-13">
2135    add DC.Creator meta tag, refactoring
2136</t>
2137<t hangText="2003-05-16">
2138    put nbsps between "section" and section number (xref).
2139</t>
2140<t hangText="2003-05-18">
2141    author summary: add missing comma.
2142</t>
2143<t hangText="2003-06-06">
2144    fix index generation bug (transposed characters in key generation). Enhance
2145    sentence start detection (xref starting a section was using lowercase
2146    "section").
2147</t>
2148<t hangText="2003-06-22">
2149    exp. support for xref/@format. Add missing support for eref w/o content.
2150    exp. support for annotations in reference elements. Code cleanup
2151    reference table formatting.
2152</t>
2153<t hangText="2003-07-09">
2154    Another fix for DC.Creator meta tag creation based on RFC2731
2155</t>
2156<t hangText="2003-07-24">
2157    Fix namespace name for DC.Creator.
2158</t>
2159<t hangText="2003-08-06">
2160    Cleanup node-set support (only use exslt (saxon, xalan, libxslt) extension
2161    functions; remove Transformix workarounds that stopped to work in Moz 1.4)
2162</t>
2163<t hangText="2003-08-09">
2164    Generate HTML lang tag.
2165</t>
2166<t hangText="2003-08-10">
2167    Map spanx/verb to HTML "samp" element. Fix author name display in
2168    references (reverse surname/initials for last author), add "Ed.".
2169    Fix internal bookmark generation.
2170</t>
2171<t hangText="2003-08-17">
2172    Add DCMI dates, identifiers and abstract. Add PI to suppress DCMI
2173    generation.  Do not add TOC entry to Copyright Statement when there is
2174    none. Align RFC2629 PI names and parameter names. Change style for
2175    inline URIs generated by eref. Add header and footer support.
2176    Enhance CSS paging properties. Support topblock PI. Added hooks for
2177    proper XHTML generation through separate XSLT. Enhance warning and
2178    error messages. Add support for artwork image display. Table formatting
2179    fixes (borders, thead continuation).
2180</t>
2181<t hangText="2003-08-18">
2182    Add workaround for MSXML4 node-set and Mozilla node-set issues (fallback
2183    just displays are warning).
2184</t>
2185<t hangText="2003-10-06">
2186    Add workaround for broken pre/ins handling in Mozilla
2187    (see <eref target="http://bugzilla.mozilla.org/show_bug.cgi?id=204401"/>). Make use
2188    of cite attribute on ed:replace. CSS cleanup.
2189</t>
2190<t hangText="2003-10-08">
2191    Fix minor issue detecting the same org for the header (caused by IE's
2192    non-standard whitespace handling). Fix default handling for /rfc/@category.
2193</t>
2194<t hangText="2003-11-09">
2195    Inherit ed:entered-by from ancestor elements. Change CSS color for inserted
2196    text to green. Generate issues-list anchor. Do not complain about missing
2197    targets when the xref element is below ed:del. Remove code that attempted
2198    to distinguish section/Section when producing links - always use
2199    uppercase. Fix date rendering for issue resolutions.
2200</t>
2201<t hangText="2003-11-29">
2202    Fix color values for table backgrounds for issue rendering. Change
2203    rendering of issue links to use inline-styles. Add colored issue markers to
2204    issues.
2205</t>
2206<t hangText="2003-12-13">
2207    Fix inheritance of ed:entered-by attribute. Display note elements inside
2208    change tracking as well.
2209</t>
2210<t hangText="2004-01-18">
2211    When PI compact = 'yes', make most CSS print page breaks conditional.
2212</t>
2213<t hangText="2004-02-20">
2214    Support for RFC3667 IPR changes (xml2rfc 1.22); see
2215    <eref target="http://lists.xml.resource.org/pipermail/xml2rfc/2004-February/001088.html"/>.
2216</t>
2217<t hangText="2004-03-11">
2218    Add "(if approved)" to "updates" and "obsoletes" unless the document has
2219    an RFC number.
2220</t>
2221<t hangText="2004-04-01">
2222    Fix RFC3667 output, see <eref target="http://lists.xml.resource.org/pipermail/xml2rfc/2004-April/001208.html"/>.
2223</t>
2224<t hangText="2004-04-04">
2225    Add support for section/top attribute. Move references into plain
2226    section container.
2227</t>
2228<t hangText="2004-04-06">
2229    Do not emit identical para anchors for deleted content.
2230</t>
2231<t hangText="2004-04-14">
2232    Fix references TOC generation when there are no references.
2233</t>
2234<t hangText="2004-04-24">
2235    Fix RFC3667 output, see <eref target="http://xml.resource.org/pipermail/xml2rfc/2004-April/001246.html"/>.
2236</t>
2237<t hangText="2004-05-09">
2238    Add custom support for generating compound index documents. Add anchors
2239    for each Index letter. Add experimental cref support. Fix conditional page
2240    breaks before References section.
2241</t>
2242<t hangText="2004-05-16">
2243    Refactor external index generation.
2244</t>
2245<t hangText="2004-05-20">
2246    Rewrite anchor generation for comments.
2247</t>
2248<t hangText="2004-05-22">
2249    Enhance issues rendering (add links to changes).
2250</t>
2251<t hangText="2004-05-30">
2252    Allow single quote as delimiter in processing instructions as well. Move
2253    block-level issue pointers to floats. Disable issue pointers for print
2254    media. Add "purple numbers". Add hrefs to section headings. Add non-printing
2255    index key letter list to start of index.
2256</t>
2257<t hangText="2004-06-01">
2258    Use &amp;#xb6; instead of # for PNs.
2259</t>
2260<t hangText="2004-07-18">
2261    Add support for list style=letters (thanks Roy F.). Make PNs optional;
2262    add new PI.
2263</t>
2264<t hangText="2004-09-05">
2265    Fix index links into unnumbered sections.  Bring IPR boilerplate in-line
2266    with xml2rfc 1.25.  Add experimental CSS3 paged media support.  Various
2267    HTML fixes.
2268</t>
2269<t hangText="2004-09-21">
2270    Enhance checking of artwork width.
2271</t>
2272<t hangText="2004-09-26">
2273    Add check for unused references. Uppercase letters in list style letters
2274    when nested into another list.
2275</t>
2276<t hangText="2004-10-10">
2277    Fix internal change track pointers.
2278</t>
2279<t hangText="2004-11-01">
2280    Allow change tracking on references (as a whole).  Rewrite artwork handling
2281    so that it allows change tracking inside artwork.  Also allow a subset of
2282    text markup inside artwork, such as xrefs (note this requires post-processing
2283    the source to make it compliant to RFC2629bis).
2284</t>
2285<t hangText="2004-11-03">
2286    Enhanced placement of iref anchors.
2287</t>
2288<t hangText="2004-11-06">
2289    Index: display irefs that appeared (with primary=true) inside artwork elements
2290    in a monospaced font.
2291</t>
2292<t hangText="2004-11-14">
2293    Add special code so that changes in section titles can be change-tracked.
2294</t>
2295<t hangText="2005-01-14">
2296    Bugfixes for HtmlToXhtml converter.
2297</t>
2298<t hangText="2005-01-22">
2299    Enhance generation of HTML h* elements (for Mozilla Outliner).
2300</t>
2301<t hangText="2005-01-31">
2302    Put vertical space around top-level TOC entries in TOC.  Switch to
2303    pt-based CSS. Re-arrange top section. Make hr elements reflect new-page
2304    settings in TXT output (compact-PI).  Fix page number in footer (CSS
2305    print) and add some more experimental support for paged media (tested
2306    with Prince 4.1 alpha).  Rewrite TOC and Index generation to generate HTML
2307    lists.  Cleanup id generation for paragraphs.  Reduce whitespace in output.
2308    Fix vspace implementation. Use right/left dqoutes and copyright sign
2309    where appropriate.
2310</t>
2311<t hangText="2005-02-04">
2312    Add &lt;link> element to references section.  Fix newly introduced bug
2313    in references processing.
2314</t>
2315<t hangText="2005-02-05">
2316    Integrate various fixes/enhancements by Roy Fielding: spelling of
2317    "Authors' Addresses", comma setting in references, position of "Authors"
2318    section, optionally place authors addresses at end (PI), trailing dots
2319    in section numbers, switch to verdana default font in CSS.  Add
2320    experimental support for centered artwork.
2321</t>
2322<t hangText="2005-02-09">
2323    Fixes in spacing and links of references section titles.  Enhance sorting
2324    in references when change tracking is in place.  Re-add figure centering
2325    support.  Add missing 2nd part of "Author's Adresses" fix.
2326</t>
2327<t hangText="2005-02-25">
2328    Align section number format with xml2rfc1.29.
2329</t>
2330<t hangText="2005-03-28">
2331    Get rid of table elements in Author's section.  Add experimental hCard
2332    (<eref target="http://developers.technorati.com/wiki/hCard"/>) support.
2333</t>
2334<t hangText="2005-04-03">
2335    Add RFC3978-style IPR statement support. (fenner@research.att.com)
2336</t>
2337<t hangText="2005-04-11">
2338    Cleanup author display. hCard related fixes.
2339</t>
2340<t hangText="2005-05-07">
2341    Minor fixes to allow change tracking in doc title.  Add experimental
2342    support for table border styles. CSS cleanup.
2343</t>
2344<t hangText="2005-06-18">
2345    Implement missing support for references to texttables.
2346</t>
2347<t hangText="2005-09-25">
2348    Use (-moz-)column-count when printing the index.
2349</t>
2350<t hangText="2005-10-04">
2351    Report missing element templates with xsl:message.
2352</t>
2353<t hangText="2005-10-15">
2354    Process t/@anchor.
2355</t>
2356<t hangText="2005-10-23">
2357    More workarounds for Mozilla's broken del/ins handling (this time for
2358    figures).
2359</t>
2360<t hangText="2005-10-27">
2361    lowercase hCard class names
2362</t>
2363<t hangText="2005-11-22">
2364    Enhance diagnostics for XML-in-artwork extension
2365</t>
2366<t hangText="2005-11-26">
2367    Fix formatting of section numbers for sections inserted into &lt;back>.
2368</t>
2369<t hangText="2005-12-12">
2370    Fix some validity problems when change tracking occured inside lists.
2371</t>
2372<t hangText="2005-12-18">
2373    Add change tracking inside the index.
2374</t>
2375<t hangText="2006-02-04">
2376    Add prev/next links to highlighted changes (change tracking extension).
2377</t>
2378<t hangText="2006-02-10">
2379    Catch errors instantiating MSXML component.
2380</t>
2381<t hangText="2006-02-11">
2382    References: add "work in progress" for Internet Drafts.
2383</t>
2384<t hangText="2006-02-27">
2385    Fix front matter (lowercase Internet-Draft, say "Intended status" for
2386    non-RFC documents). Start work on experimental extension for 
2387    simplified internal links.
2388</t>
2389<t hangText="2006-03-19">
2390    Tweaks to IESG Copyright stuff; support submissionType attribute.
2391    Fix duplicate reference anchors in HTML output.  Reduce HTML Tidy warnings.
2392    Fix reference to normative ASCII version (now requires trailing ".txt").
2393    Tweaks to hCard generation.  Started to move non-issue-tracking
2394    extensions into namespace "http://purl.org/net/xml2rfc/ext".
2395</t>
2396<t hangText="2006-03-27">
2397    Moved "simple reference" extension into namespace "http://purl.org/net/xml2rfc/ext"
2398    and add documentation.  HTML conformance enhancements.
2399</t>
2400<t hangText="2006-04-02">
2401    Cleanup special code for automated XHTML XSLT generation.
2402</t>
2403<t hangText="2006-04-21">
2404    Generate &lt;CITE> elements where appropiate.
2405    Introduce x:blockquote, x:dfn, x:h and x:q elements.
2406</t>
2407<t hangText="2006-05-06">
2408    Introduce x:bcp14 element.
2409</t>
2410<t hangText="2006-05-14">
2411  Fix content model for x:blockquote.
2412</t>
2413<t hangText="2006-06-18">
2414  Add box drawing support (x:bt, x:bc, x:bb).
2415</t>
2416<t hangText="2006-06-20">
2417  HTML validity fixes (legal chars in anchors in index).
2418</t>
2419<t hangText="2006-06-24">
2420  Reduce leading empty lines in artwork. Move &lt;dt> style info into CSS.
2421</t>
2422<t hangText="2006-07-14">
2423  Fix rendering of multiple street address entries (missing line break).
2424</t>
2425<t hangText="2006-07-24">
2426  Add extension for deep linking into RFCs, do not generate empty list
2427  items in TOC output, avoid empty &lt;dt> elements for list items
2428  without hangText attribute.
2429</t>
2430<t hangText="2006-08-01">
2431  Allow @anchor on more elements; start work on Relax NG grammar for
2432  extensions. Reduce generated style elements (use CSS classes instead).
2433  Consistently use "id" instead of "name". Change default target for RFC
2434  links to "http://tools.ietf.org/html/rfcNNNN".
2435</t>
2436<t hangText="2006-08-06">
2437  Include appendices defined in &lt;appendix> elements in TOC (please
2438  consider them deprecated anyhow!). Generate links to
2439  "http://tools.ietf.org/html/draft-*" for Internet Drafts.
2440  Replace x:frag by x:rel, allowing any kind of relative reference instead
2441  of just fragments.
2442</t>
2443<t hangText="2006-08-30">
2444  Reduce textual differences between HTML output and what xml2rfc produces
2445  in TXT output mode (section refs/reference targets). Add small workaround
2446  for Opera 9.0.1's problem with node-set().
2447</t>
2448<t hangText="2006-10-29">
2449  Fix problem generating internal links to change markup within references
2450  section. Enhancements when generating numbered references for deleted
2451  references.
2452  Allow inclusion of references into the index (through include-references-in-index
2453  extension).
2454  Fix a bug that caused the newer version of the IETF boilerplate to be
2455  produced rather than the pre-RFC3667 one.
2456  Update to RFC4287 boilerplate.
2457</t>
2458<t hangText="2006-11-11">
2459  Add extension attribute x:for-anchor to &lt;iref&gt; handling.
2460</t>
2461<t hangText="2006-11-26">
2462  Experimental (and limited) support for &lt;x:lt&gt;.
2463</t>
2464<t hangText="2006-12-04">
2465  Fix bugs in processing documents that have both the ipr and the number attribute
2466  set on the rfc root element. Add support for x:fmt='none' on xrefs.
2467  Add different pre style based on artwork type attributes (experimental).
2468</t>
2469<t hangText="2006-12-13">
2470  Add x:fmt='anchor' for xref elements.
2471</t>
2472<t hangText="2007-01-07">
2473  Fix root template for compatibility for the exslt:node-set implementation
2474  in Firefox3.
2475</t>
2476<t hangText="2007-01-29">
2477  Avoid empty table entry in front matter when organization is not specified
2478  for an author.
2479</t>
2480<t hangText="2007-02-10">
2481  Allow change tracking in table rows.
2482</t>
2483<t hangText="2007-03-09">
2484  Add hcard profile URI (<eref target="http://www.w3.org/2006/03/hcard"/>) to head element.
2485  Add warning for misplaced &lt;t> elements (after section).
2486</t>
2487<t hangText="2007-03-21">
2488  Fix internal linking from reference entries in index for some xref types.
2489  Minor CSS tweaks contributed by MTR. Allow turning on text justification through
2490  a PI. Improve iref anchor generation to generate less instable anchors.
2491</t>
2492<t hangText="2007-03-28">
2493  Fixes for numbering of ed:inserted references sections.
2494</t>
2495<t hangText="2007-05-04">
2496  Do not generate anchors for edits in deleted sections. Enhance HTML
2497  conformance.
2498</t>
2499<t hangText="2007-05-19">
2500  Enhance diagnostics when using Saxon (needs Saxon's "-l" command line
2501  parameter to keep line number information). Add warning when symref PI
2502  is missing (default will change in the future).
2503  Add support for overriding computed section numbers (when formatting
2504  historic documents).
2505</t>
2506<t hangText="2007-06-07">
2507  Change default for symrefs PI to "yes" (see change in xml2rfc 1.33pre4).
2508  Warn about docName attributes that appear to contain a file extension.
2509</t>
2510<t hangText="2007-06-26">
2511  Workaround author/@initials values without trailing dot, as in xml2rfc.tcl.
2512</t>
2513<t hangText="2007-07-14">
2514  Enhance index generation for references that use @x:sec attribute.
2515</t>
2516<t hangText="2007-09-09">
2517  Fix: sortrefs is a nop when symrefs=no.
2518</t>
2519<t hangText="2007-10-17">
2520  Work in progress: add support for referencing sections in sibling
2521  documents by anchor name.
2522</t>
2523<t hangText="2007-10-17">
2524  Work in progress (continued): support for referencing sections in sibling
2525  documents by anchor name.
2526</t>
2527<t hangText="2007-12-31">
2528  Emit warning when updating/obsoleting stuff that's not referenced.
2529</t>
2530<t hangText="2008-02-03">
2531  Support xml2rfc-1.33pre5's suppress-title attribute on texttable and figure.
2532</t>
2533<t hangText="2008-02-06">
2534  Extension: allow &lt;eref> below &lt;cref>.
2535</t>
2536<t hangText="2008-02-17">
2537  Extensions: add x:span and x:length-of.
2538</t>
2539<t hangText="2008-02-20">
2540  Add new RFC boilerplate (as changed in 2007-08).
2541</t>
2542<t hangText="2008-02-27">
2543  Improve diagnostics for artwork width problems; add defaulting of publication
2544  dates (requires XSLT processor supporting exslt:date, or msxml).
2545</t>
2546<t hangText="2008-02-29">
2547  Enhance CSS for link elements in the front header, update rules for
2548  generating "Acknowledgment" statement.
2549</t>
2550<t hangText="2008-03-01">
2551  Use line numbers in diagnostics in Saxon8/9 as well.
2552</t>
2553<t hangText="2008-03-02">
2554  Fix a bug in the logic choosing the boilerplate, resulting in obsolete
2555  text being inserted into IDs.
2556</t>
2557<t hangText="2008-04-01">
2558  Add support for superscript element.
2559</t>
2560      </list></t>
2561    </section>
2562    <section title="rfc2629toFO.xslt">
2563      <t><list style="hanging">
2564<t hangText="2003-11-16">
2565    Initial release.
2566</t>
2567<t hangText="2003-11-29">
2568    Enhance handling of unknown list styles.
2569</t>
2570<t hangText="2004-04-04">
2571    Update reference section handling.
2572</t>
2573<t hangText="2004-04-17">
2574    Use XSL-WD-1.1-style fo:bookmark and index handling and add postprocessors for
2575    existing implementations. Unify PDF info generation by using XEP (postprocessors)
2576    will convert.
2577</t>
2578<t hangText="2004-04-20">
2579    Add experimental cref support.
2580</t>
2581<t hangText="2004-06-14">
2582    Set correct index-item defaults.
2583</t>
2584<t hangText="2004-07-18">
2585    Add list style=letters.
2586</t>
2587<t hangText="2004-09-03">
2588    Make URLs in text break where they are allowed to break by inserting
2589    zero-width spaces.
2590</t>
2591<t hangText="2004-09-26">
2592    Fix letter-style inside nested lists.
2593</t>
2594<t hangText="2004-10-31">
2595    Update handling of artwork.
2596</t>
2597<t hangText="2004-11-13">
2598    Fix handling of references inside ed:* markup.  Fix whitespace handling
2599    in artwork.
2600</t>
2601<t hangText="2004-11-27">
2602    Irefs in artwork generate monospaced entries in index.
2603</t>
2604<t hangText="2005-01-31">
2605    Fix TOC generation that was broken after changes in main XSLT.
2606</t>
2607<t hangText="2005-02-05">
2608    Bring in sync with cosmetic changes in rfc2629.xslt.
2609</t>
2610<t hangText="2005-05-07">
2611    Minor fix for change tracking in document title.  Support for table
2612    styles.
2613</t>
2614<t hangText="2005-06-18">
2615    Fix references to tables.
2616</t>
2617<t hangText="2005-10-15">
2618    Process t/@anchor.
2619</t>
2620<t hangText="2006-02-11">
2621    References: add "work in progress" for Internet Drafts.
2622</t>
2623<t hangText="2006-06-02">
2624    Use XSL 1.1 WD Feb 2006.
2625</t>
2626<t hangText="2007-03-21">
2627    Support optional text justification.
2628</t>
2629<t hangText="2007-05-19">
2630    Various improvements in spacing; also allow overriding the automatic
2631    list indentation via list/x:indent.
2632</t>
2633     </list></t>
2634    </section>
2635
2636    <section title="xsl11toAn.xslt">
2637    <t><list style="hanging">
2638<t hangText="2004-05-17">
2639     Initial release.
2640</t>
2641<t hangText="2006-06-02">
2642    Use XSL 1.1 WD Feb 2006.
2643</t>
2644    </list></t>
2645    </section>
2646
2647    <section title="xsl11toFop.xslt">
2648    <t><list style="hanging">
2649<t hangText="2004-05-17">
2650     Initial release.
2651</t>
2652<t hangText="2006-06-02">
2653    Use XSL 1.1 WD Feb 2006.
2654</t>
2655    </list></t>
2656    </section>
2657
2658    <section title="xsl11toFop-0.93.xslt">
2659    <t><list style="hanging">
2660<t hangText="2008-03-15">
2661    Add a workaround to the fo:inline workaround (sigh).
2662</t>
2663    </list></t>
2664    </section>
2665
2666    <section title="xsl11toXep.xslt">
2667    <t><list style="hanging">
2668<t hangText="2004-05-17">
2669     Initial release.
2670</t>
2671<t hangText="2004-09-04">
2672     Fix xep:index-item attributes.
2673</t>
2674<t hangText="2006-06-02">
2675    Use XSL 1.1 WD Feb 2006.
2676</t>
2677    </list></t>
2678    </section>
2679  </section>
2680
2681</back>
2682</rfc>
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