summaryrefslogtreecommitdiff
path: root/doc/rfc/rfc2629.txt
blob: abb47ef8c62cc6eb22870e47b045b52e60348545 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
Network Working Group                                            M. Rose
Request for Comments: 2629                        Invisible Worlds, Inc.
Category: Informational                                        June 1999


                    Writing I-Ds and RFCs using XML

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

Abstract

   This memo presents a technique for using XML (Extensible Markup
   Language) as a source format for documents in the Internet-Drafts
   (I-Ds) and Request for Comments (RFC) series.





























Rose                         Informational                      [Page 1]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


Table of Contents

   1.      Introduction . . . . . . . . . . . . . . . . . . . . . . .  3
   2.      Using the DTD to Write I-Ds and RFCs . . . . . . . . . . .  4
   2.1     XML basics . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.2     Front matter . . . . . . . . . . . . . . . . . . . . . . .  6
   2.2.1   The title Element  . . . . . . . . . . . . . . . . . . . .  6
   2.2.2   The author Element . . . . . . . . . . . . . . . . . . . .  7
   2.2.3   The date Element . . . . . . . . . . . . . . . . . . . . .  8
   2.2.4   Meta Data Elements . . . . . . . . . . . . . . . . . . . .  8
   2.2.5   The abstract Element . . . . . . . . . . . . . . . . . . .  9
   2.2.6   The note Element . . . . . . . . . . . . . . . . . . . . .  9
   2.2.7   Status, Copyright Notice, Table of Contents  . . . . . . .  9
   2.2.7.1 Conformance with RFC 2026  . . . . . . . . . . . . . . . .  9
   2.2.8   Everything in the Front  . . . . . . . . . . . . . . . . . 10
   2.3     The Middle . . . . . . . . . . . . . . . . . . . . . . . . 11
   2.3.1   The section Element  . . . . . . . . . . . . . . . . . . . 11
   2.3.1.1 The t Element  . . . . . . . . . . . . . . . . . . . . . . 12
   2.3.1.2 The list Element . . . . . . . . . . . . . . . . . . . . . 12
   2.3.1.3 The figure Element . . . . . . . . . . . . . . . . . . . . 13
   2.3.1.4 The xref Element . . . . . . . . . . . . . . . . . . . . . 15
   2.3.1.5 The eref Element . . . . . . . . . . . . . . . . . . . . . 15
   2.3.1.6 The iref Element . . . . . . . . . . . . . . . . . . . . . 16
   2.3.1.7 The vspace Element . . . . . . . . . . . . . . . . . . . . 16
   2.4     Back matter  . . . . . . . . . . . . . . . . . . . . . . . 17
   2.4.1   The references Element . . . . . . . . . . . . . . . . . . 17
   2.4.2   Appendices . . . . . . . . . . . . . . . . . . . . . . . . 18
   2.4.3   Copyright Status . . . . . . . . . . . . . . . . . . . . . 18
   3.      Processing the XML Source File . . . . . . . . . . . . . . 19
   3.1     Editing  . . . . . . . . . . . . . . . . . . . . . . . . . 19
   3.1.1   Checking . . . . . . . . . . . . . . . . . . . . . . . . . 19
   3.2     Converting to Text Format  . . . . . . . . . . . . . . . . 20
   3.3     Converting to HTML Format  . . . . . . . . . . . . . . . . 20
   3.4     Viewing  . . . . . . . . . . . . . . . . . . . . . . . . . 20
   3.5     Searching  . . . . . . . . . . . . . . . . . . . . . . . . 20
   4.      Security Considerations  . . . . . . . . . . . . . . . . . 21
           References . . . . . . . . . . . . . . . . . . . . . . . . 22
           Author's Address . . . . . . . . . . . . . . . . . . . . . 22
   A.      The rfc Element  . . . . . . . . . . . . . . . . . . . . . 23
   B.      The RFC DTD  . . . . . . . . . . . . . . . . . . . . . . . 24
   C.      Acknowledgements . . . . . . . . . . . . . . . . . . . . . 29
   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
   Full Copyright Statement . . . . . . . . . . . . . . . . . . . . . 31








Rose                         Informational                      [Page 2]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


1. Introduction

   This memo describes how to write a document for the I-D and RFC
   series using the Extensible Markup Language [1] (XML). This memo has
   three goals:

   1.  To describe a simple XML Document Type Definition (DTD) that is
       powerful enough to handle the simple formatting requirements of
       RFC-like documents whilst allowing for meaningful markup of
       descriptive qualities.

   2.  To describe software that processes XML source files, including a
       tool that produces documents conforming to RFC 2223 [2], HTML
       format, and so on.

   3.  To provide the proof-of-concept for the first two goals (this
       memo was written using this DTD and produced using that
       software).

   It is beyond the scope of this memo to discuss the political
   ramifications of using XML as a source format for RFC-like documents.
   Rather, it is simply noted that adding minimal markup to plain text:

   o  allows the traditional production of textual RFC-like documents
      using familiar editors;

   o  requires some, albeit minimal, additions to existing software
      environments; and,

   o  permits information to be organized, searched, and retrieved using
      both unstructured and structured mechanisms.




















Rose                         Informational                      [Page 3]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


2. Using the DTD to Write I-Ds and RFCs

   We do not provide a formal or comprehensive description of XML.
   Rather, this section discusses just enough XML to use a Document Type
   Declaration (DTD) to write RFC-like documents.

   If you're already familiar with XML, skip to Appendix B to look at
   the DTD.

2.1 XML basics

   There are very few rules when writing in XML, as the syntax is
   simple. There are five terms you'll need to know:

   1.  An "element" usually refers to a start tag, an end tag, and all
       the characters in between, e.g., "<example>text and/or nested
       elements</example>"

   2.  An "empty element" combines the start tag and the end tag, e.g.,
       "<empty/>". You don't find these in HTML.

   3.  An "attribute" is part of an element. If present, they occur in
       the start tag, e.g., "<example name='value'>". Of course, they
       can also appear in empty elements, e.g., "<empty name='value'/>".

   4.  An "entity" is a textual macro that starts with "&". Don't worry
       about these, you'll only use them whenever you want to put a "&"
       or a "<" in your text.

   5.  A "token" is a string of characters. The first character is
       either a letter or an underscore ("_"). Any characters that
       follow are either letters, numbers, an underscore, or a period
       (".").

   First, start your source file with an XML declaration, a reference to
   the DTD, and the "rfc" element:

       <?xml version="1.0"?>
       <!DOCTYPE rfc SYSTEM "rfc2629.dtd">
       <rfc>
           ...
       </rfc>

   Ignore the first two lines -- the declaration and the reference --
   and simply treat them as opaque strings. Nothing else should be
   present after the "</rfc>" tag.

   Second, make sure that all elements are properly matched and nested.



Rose                         Informational                      [Page 4]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


   A properly matched element that starts with "<example>" is eventually
   followed with "</example>". (Empty elements are always matched.)
   Elements are properly nested when they don't overlap.

   For example,

       <outer>
           ...
           <inner>
               ...
           </inner>
           ...
       </outer>

   is properly nested.

   However,

       <outer>
           ...
           <inner>
               ...
           </outer>
           ...
       </inner>

   overlaps, so the elements aren't properly nested.

   Third, never use "<" or "&" in your text. Instead, use either "&lt;"
   or "&amp;", respectively.

   Fourth, there are two quoting characters in XML, 'apostrophe' and
   "quotation". Make sure that all attributes values are quoted, e.g.,
   "<example name='value'>", If the value contains one of the quoting
   characters, then use the other to quote the value, e.g., "<example
   name='"'>", If the value contains both quoting characters, then use
   one of them to quote the value, and replace occurrances of that
   character in the attribute value with either '&apos;' (apostrophe) or
   "&quot;" (quotation), e.g., "<example name='"&apos;"'>".

   If you want to put a comment in your source file, here's the syntax:

           <!-- comments can be multiline,
            if you wish -->

   Finally, XML is case sensitive.





Rose                         Informational                      [Page 5]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


2.2 Front matter

   Immediately following the "<rfc>" tag is the "front" element:

       <?xml version="1.0"?>
       <!DOCTYPE rfc SYSTEM "rfc2629.dtd">
       <rfc>
           <front>
               <title ...>
               <author ...>
               <author ...>
               <date ...>
               <area ...>
               <workgroup ...>
               <keyword ...>
               <keyword ...>
               <abstract ...>
               <note ...>
           </front>
           ...
       </rfc>

   (Note that in all examples, indentation is used only for expository
   purposes.)

   The "front" element consists of a "title" element, one or more
   "author" elements, a "date" element, one or more optional "area"
   elements, one or more optional "workgroup" elements, one or more
   optional "keyword" elements, an optional "abstract" element. and, one
   or more optional "note" elements.

2.2.1 The title Element

   The "title" element identifies the title of the document. Because the
   title will be used in the headers of the document when formatted
   according to [2], if the title is more than 42 characters, then an
   abbreviation should also be provided, e.g.,

       <title abbrev="Much Ado about Nothing">
       The IETF's Discussion on "Source Format of RFC Documents"
       </title>










Rose                         Informational                      [Page 6]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


2.2.2 The author Element

   Each "author" element identifies a document author. Since a document
   may have more than one author, more than one "author" element may be
   present. If the author is a person, then three attributes must be
   present in the "<author>" tag, "initials", "surname", and
   "fullname", e.g.,

       <author initials="M.T." surname="Rose"
               fullname="Marshall T. Rose">

   The "author" element itself consists of an "organization" element,
   and, an optional "address" element.

   The "organization" element is similar to the "title" element, in that
   an abbreviation may be paired with a long organization name using the
   "abbrev" attribute, e.g.,

       <organization abbrev="ISI">
           USC/Information Sciences Institute
       </organization>

   The "address" element consists of an optional "postal" element, an
   optional "phone" element, an optional "facsimile" element, an
   optional "email" element, and, an optional "uri" element.

   The "postal" element contains one or more "street" elements, followed
   by any combination of "city", "region" (state or province), "code"
   (zipcode or postal code), and "country" elements, e.g.,

       <postal>
           <street>660 York Street</street>
           <street>M/S 40</street>
           <city>San Francisco</city> <region>CA</region>
           <code>94110</code>
           <country>US</country>
       </postal>

   This flexibility is provided to allow for different national formats
   for postal addresses. Note however, that although the order of the
   "city", "region", "code", and "country" elements isn't specified, at
   most one of each may be present. Regardless, these elements must not
   be re-ordered during processing by an XML application (e.g., display
   applications must preserve the ordering of the information contained
   in these elements). Finally, the value of the "country" element
   should be a two-letter code from ISO 3166.





Rose                         Informational                      [Page 7]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


   The "phone", "facsimile", "email", and "uri" elements are simple,
   e.g.,

       <phone>+1 415 695 3975</phone>
       <email>mrose@not.invisible.net</email>
       <uri>http://invisible.net/</uri>

2.2.3 The date Element

   The "date" element identifies the publication date of the document.
   It consists of a month and a year, e.g.,

       <date month="February" year="1999" />

   The "date" element also has an optional day attribute.

2.2.4 Meta Data Elements

   The "front" element may contain meta data -- the content of these
   elements does not appear in printed versions of the document.

   A document has one or more optional "area", "workgroup" and "keyword"
   elements, e.g.,

       <area>General</area>
       <workgroup>RFC Beautification Working Group</workgroup>
       <keyword>RFC</keyword>
       <keyword>Request for Comments</keyword>
       <keyword>I-D</keyword>
       <keyword>Internet-Draft</keyword>
       <keyword>XML</keyword>
       <keyword>Extensible Markup Language</keyword>

   The "area" elements identify a general category for the document
   (e.g., one of "Applications", "General", "Internet", "Management",
   "Operations", "Routing", "Security", "Transport", or "User"), while
   the "workgroup" elements identify the IETF working groups that
   produced the document, and the "keyword" elements identify useful
   search terms.












Rose                         Informational                      [Page 8]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


2.2.5 The abstract Element

   A document may have an "abstract" element, which contains one or more
   "t" elements (Section 2.3.1.1). In general, only a single "t" element
   is present, e.g.,

       <abstract>
           <t>This memo presents a technique for using XML
           (Extensible Markup Language) as a source format
           for documents in the Internet-Drafts (I-Ds) and
           Request for Comments (RFC) series.</t>
       </abstract>

2.2.6 The note Element

   A document may have one or more "note" elements, each of which
   contains one or more "t" elements (Section 2.3.1.1). There is a
   mandatory "title" attribute. In general, the "note" element contains
   text from the IESG, e.g.,

       <note title="IESG Note">
           <t>The IESG has something to say.</t>
       </note>

2.2.7 Status, Copyright Notice, Table of Contents

   Note that text relating to the memo's status, copyright notice, or
   table of contents is not included in the document's markup -- this is
   automatically inserted by an XML application when it produces either
   a text or HTML version of the document.

2.2.7.1 Conformance with RFC 2026

   If an Internet-Draft is being produced, then the "ipr" attribute
   should be present in the "<rfc>" tag at the beginning of the file.
   The value of the attribute should be one of:

   full2026: indicating that the document is in full conformance with
      all the provisions of Section 10 of RFC 2026;

   noDerivativeWorks2026: indicating that the document is in full
      conformance with all the provisions of Section 10 of RFC 2026
      except that the right to produce derivative works is not granted;
      or,

   none: indicating that the document is NOT offered in accordance with
      Section 10 of RFC 2026, and the author does not provide the IETF
      with any rights other than to publish as an Internet-Draft.



Rose                         Informational                      [Page 9]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


   In the latter case, a copyright notice will not be automatically
   inserted during processing by an XML application.

   Consult [3] for further details.

   Finally, if the Internet-Draft is being submitted to an automated
   process, then the "docName" attribute should be present in the
   "<rfc>" tag at the beginning of the file. The value of this attribute
   contains the document (not file) name associated with this Internet-
   Draft, e.g.,

       <rfc ipr="full" docName="draft-mrose-writing-rfcs-01">
           ...
       </rfc>

2.2.8 Everything in the Front

   So, putting it all together, we have, e.g.,

       <front>
           <title>Writing I-Ds and RFCs using XML</title>

           <author initials="M.T." surname="Rose"
                   fullname="Marshall T. Rose">
               <organization>Invisible Worlds, Inc.</organization>

               <address>
                   <postal>
                       <street>660 York Street</street>
                       <street>M/S 40</street>
                       <city>San Francisco</city> <region>CA</region>
                       <code>94110</code>
                       <country>US</country>
                   </postal>

                   <phone>+1 415 695 3975</phone>
                   <email>mrose@not.invisible.net</email>
                   <uri>http://invisible.net/</uri>
               </address>
           </author>

           <date month="February" year="1999" />

           <area>General</area>
           <workgroup>RFC Beautification Working Group</workgroup>
           <keyword>RFC</keyword>
           <keyword>Request for Comments</keyword>
           <keyword>I-D</keyword>



Rose                         Informational                     [Page 10]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


           <keyword>Internet-Draft</keyword>
           <keyword>XML</keyword>
           <keyword>Extensible Markup Language</keyword>
           <abstract>
               <t>This memo presents a technique for using XML
               (Extensible Markup Language) as a source format
               for documents in the Internet-Drafts (I-Ds) and
               Request for Comments (RFC) series.</t>
           </abstract>
       </front>

2.3 The Middle

   The "middle" element contains all the sections of the document except
   for the bibliography and appendices:

       ...
       </front>
       <middle>
           <section ...>
           <section ...>
           <section ...>
       </middle>
       <back>
       ...

   The "middle" element consists of one or more "section" elements.

2.3.1 The section Element

   Each "section" element contains a section of the document. There is a
   mandatory attribute, "title", that identifies the title of the
   section. There is also an optional attribute, "anchor", that is used
   for cross-referencing with the "xref" element (Section 2.3.1.4),
   e.g.,

       <section anchor="intro" title="Introduction">
           ...
       </section>












Rose                         Informational                     [Page 11]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


   The "section" element is recursive -- each contains any number and
   combination of "t", "figure", and "section" elements, e.g.,

       <section title="The Middle">
           ...
           <section title="The section Element">
               ...
               <section title="The t Element">...</section>
               <section title="The list Element">...</section>
               <section title="The figure Element">...</section>
               <section title="The xref Element">...</section>
               <section title="The eref Element">...</section>
               <section title="The iref Element">...</section>
           </section>
       </section>

2.3.1.1 The t Element

   The "t" element contains any number and combination of paragraphs,
   lists, and figures. If a cross-reference is needed to a section,
   figure, or reference, the "xref" element (Section 2.3.1.4) is used;
   similarly, if an external-reference is needed, the "eref" element
   (Section 2.3.1.5) is used. Indexing of text is provided by the the
   "iref" element (Section 2.3.1.6).

2.3.1.2 The list Element

   The "list" element contains one or more items. Each item is a "t"
   element, allowing for recursion, e.g.,

       <list style="numbers">
           <t>The pfirst item.</t>
           <t>The second item, which contains two bulleted sub-items:
               <list style="symbols">
                   <t>The first sub-item.</t>
                   <t>The second sub-item.</t>
               </list>
           </t>
       </list>

   The "list" element has an optional attribute, "style", having the
   value "numbers" (for numeric lists), "symbols" (for bulleted lists),
   "hanging" (for hanging lists), or, "empty" (for indented text). If a
   "list" element is nested, the default value is taken from its closest
   parent; otherwise, the default value is "empty".






Rose                         Informational                     [Page 12]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


   When nested within a "hanging list" element, the "t" element has an
   optional attribute, "hangText" that specifies the text to be
   inserted, e.g.,

       <list style="hanging">
           <t hangText="full2026:">indicating that the document is in
           full conformance with all the provisions of Section 10 of RFC
           2026;</t>

           <t hangText="noDerivativeWorks2026:">indicating that the
           document is in full conformance with all the provisions of
           Section 10 of RFC 2026 except that the right to produce
           derivative works is not granted; or,</t>

           <t hangText="none:">indicating that the document is NOT
           offered in accordance with Section 10 of RFC 2026, and the
           author does not provide the IETF with any rights other than
           to publish as an Internet-Draft.</t>
       </list>

2.3.1.3 The figure Element

   The "figure" element groups an optional "preamble" element, an
   "artwork" element, and an optional "postamble" element together. The
   "figure" element also has an optional "anchor" attribute that is used
   for cross-referencing with the "xref" element (Section 2.3.1.4).
   There is also an optional "title" attribute that identifies the title
   of the figure.

   The "preamble" and "postamble" elements, if present, are simply text.
   If a cross-reference is needed to a section, figure, or reference,
   the "xref" element (Section 2.3.1.4) is used; similarly, if an
   external-reference is needed, the "eref" element (Section 2.3.1.5) is
   used. Indexing of text is provided by the the "iref" element (Section
   2.3.1.6).

   The "artwork" element, which must be present, contains "ASCII
   artwork". Unlike text contained in the "t", "preamble", or
   "postamble" elements, both horizontal and vertical whitespace is
   significant in the "artwork" element.











Rose                         Informational                     [Page 13]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


   So, putting it all together, we have, e.g.,

       <figure anchor="figure_example">
           <preamble>So,
           putting it all together, we have, e.g.,</preamble>
           <artwork>
               ascii artwork goes here...

               be sure to use "&lt;" or "&amp;" instead of "<" and "&",
               respectively!
           </artwork>
           <postamble>which is a very simple example.</postamble>
       </figure>

   which is a very simple example.

   If you have artwork with a lot of "<" characters, then there's an XML
   trick you can use:

       <figure>
           <preamble>If you have artwork with a lot of "&lt;"
           characters, then there's an XML trick you can
           use:</preamble>
           <artwork><![CDATA[
               ascii artwork goes here...

               just don't use "]]" in your artwork!
           ]]></artwork>
           <postamble>The "&lt;![CDATA[ ... ]]>" construct is called
           a CDATA block -- everything between the innermost brackets
           is left alone by the XML application.</postamble>
       </figure>

   The "<![CDATA[ ... ]]>" construct is called a CDATA block --
   everything between the innermost brackets is left alone by the XML
   application.

   Because the "figure" element represents a logical grouping of text
   and artwork, an XML application producing a text version of the
   document should attempt to keep these elements on the same page.
   Because RFC 2223 [2] allows no more than 69 characters by 49 lines of
   content on each page, XML applications should be prepared to
   prematurely introduce page breaks to allow for better visual
   grouping.







Rose                         Informational                     [Page 14]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


   Finally, the "artwork" element has two optional attributes: "name"
   and "type". The former is used to suggest a filename to use when
   storing the content of the "artwork" element, whilst the latter
   contains a suggestive data-typing for the content.

2.3.1.4 The xref Element

   The "xref" element is used to cross-reference sections, figures, and
   references. The mandatory "target" attribute is used to link back to
   the "anchor" attribute of the "section", "figure", and "reference"
   elements. The value of the "anchor" and "target" attributes should be
   formatted according to the token syntax in Section 2.1.

   If used as an empty element, e.g.,

       according to the token syntax in <xref target="xml_basics" />.

   then the XML application inserts an appropriate phrase during
   processing, such as "Section 2.1" or "<a href="#xml_basics">XML
   Basics</a>".

   If used with content, e.g.,

       conforming to <xref target="refs.RFC2223">RFC 2223</xref>.

   then the XML application inserts an appropriate designation during
   processing, such as "RFC 2223 [2]" or "<a href="#refs.RFC2223">RFC
   2223</a>". Although the XML application decides what "an appropriate
   designation" might be, its choice is consistent throughout the
   processing of the document.

2.3.1.5 The eref Element

   The "eref" element is used to reference external documents. The
   mandatory "target" attribute is a URI [4], e.g.,

       <eref target="http://metalab.unc.edu/xml/">Cafe con Leche</eref>

   Note that while the "target" attribute is always present, the "eref"
   element may be empty, e.g.,

       <eref target="http://invisible.net/" />

   and the XML application inserts an appropriate designation during
   processing such as "[9]" or "<a
   href="http://invisible.net/">http://invisible.net/</a>".





Rose                         Informational                     [Page 15]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


2.3.1.6 The iref Element

   The "iref" element is used to add information to an index. The
   mandatory "item" attribute is the primary key the information is
   stored under, whilst the optional "subitem" attribute is the
   secondary key, e.g.,

       <iref item="indexing" subitem="how to" />

   Finally, note that the "iref" element is always empty -- it never
   contains any text.

2.3.1.7 The vspace Element

   The "vspace" element, which may occur only inside the "t" element, is
   used by the author to provide formatting guidance to the XML
   application. There is an attribute, "blankLines", that indicates the
   number of blank lines that should be inserted. A physical linebreak
   is specified by using the default value, "0".

   In addition, the "vspace" element can be used to force a new physical
   paragraph within a list item, e.g.,

       <list style="numbers">
           <t>This is list item.
              <vspace blankLines="1" />
              This is part of the same list item,
              although when displayed, it appears
              as a separate physical paragraph.</t>
       </list>

   An XML application producing a text version of the document should
   exercise care when encountering a value for "blankLines" that causes
   a pagebreak -- in particular, if a "vspace" element causes a
   pagebreak, then no further blank lines should be inserted. This
   allows authors to "force" a pagebreak by using an arbitrarily large
   value, e.g., "blankLines='100'".

   Finally, note that the "vspace" element is always empty -- it never
   contains any text.











Rose                         Informational                     [Page 16]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


2.4 Back matter

   Finally, the "back" element is used for references and appendices:

           ...
           </middle>
           <back>
               <references>
                   <reference ...>
                   <reference ...>
               </references>
               <section ...>
               <section ...>
           </back>
       </rfc>

   The "back" element consists of an optional "references" element, and,
   one or more optional "section" elements. The "back" element itself is
   optional, if your document doesn't have any references or appendices,
   you don't have to include it.

2.4.1 The references Element

   The "references" element contains the document's bibliography. It
   contains one or more "reference" elements.

   Each "reference" element contains a "front" element and one or more
   optional "seriesInfo" elements.

   We've already discussed the "front" element back in Section 2.2.

   The "seriesInfo" element has two attributes, "name" and "value" that
   identify the document series and series entry, respectively.


















Rose                         Informational                     [Page 17]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


   The "reference" element has an optional "anchor" attribute that is
   used for cross-referencing with the "xref" element (Section 2.3.1.4),
   e.g.,

       <reference anchor="refs.RFC2200">
           <front>
               <title>Internet Official Protocol Standards</title>
               <author initials="J." surname="Postel"
                       fullname="Jon Postel">
                   <organization abbrev="ISI">
                   USC/Information Sciences Institute
                   </organization>
               </author>

               <date month="June" year="1997" />
           </front>
           <seriesInfo name="RFC" value="2200" />
           <seriesInfo name="STD" value="1" />
       </reference>

   The "reference" element also has an optional "target" attribute that
   is used for external references (c.f., Section 2.3.1.5). The XML
   application, if producing an HTML version of the document will use
   the "target" attribute accordingly; however, if the "name" attribute
   of the "seriesInfo" element has the value "RFC", then the XML
   application should automatically provide an appropriate default for
   the "target" attribute (e.g., "http://example.com/rfcs/rfc2200.txt").

2.4.2 Appendices

   To include appendices after the bibliography, simply add more
   "section" elements. (For an example, look at the example at the
   beginning of Section 2.4.)

2.4.3 Copyright Status

   The copyright status for the document is not included in the
   document's markup -- this is automatically inserted by an XML
   application that produces either a text or HTML version of the
   document.











Rose                         Informational                     [Page 18]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


3. Processing the XML Source File

   This section concerns itself with applications that operate on an XML
   source file. A lot of XML tools are available, as are many lists of
   XML resources, e.g., Cafe con Leche [5].

   There are two kinds of XML tools: validating and non-validating.
   Both check that the source file conforms to the rules given in
   Section 2.1. However, in addition to making sure that the source file
   is well-formed, a validating tool also reads the DTD referenced by
   the source file to make sure that they match. There are a number of
   both validating and non-validating tools available.

3.1 Editing

   There are several XML editors available. Ideally, you want an editor
   that validates. This has two advantages:

   o  the editor provides guidance in fleshing-out the document
      structure; and,

   o  the editor validates that the source file matches the rules in the
      DTD.

   There are two major modes in Emacs that support XML: tdtd [6] and
   psgml [7]. The latter mode allows you to validate the source file (by
   calling an external program). If you visit the source file in Emacs
   and the major mode isn't "SGML" or "XML", then usually all it takes
   is adding these lines to your ".emacs" file:

       (setq auto-mode-alist
             (cons (cons "\\.xml$" 'sgml-mode) auto-mode-alist))

   and then restarting Emacs. If this doesn't work, try one of the
   sources above.

   The author uses both sgml-mode in Emacs, and a commercial validating
   editor, Clip! version 1.5 [8], when editing source files.

3.1.1 Checking

   If your editor doesn't validate, then you should run a program to
   validate the source file.

   The author uses the AlphaWorks XML parser [9] for this purpose. It
   requires that your system have a Java virtual machine. In addition to
   Java, there are validating parsers written in C, Perl, Python, and
   Tcl.



Rose                         Informational                     [Page 19]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


3.2 Converting to Text Format

   The author has written the xml2rfc tool [10], which reads the source
   file and produces both a text and HTML version of the document.
   (This memo was produced using the xml2rfc tool.) Note that xml2rfc
   isn't a validating tool, so it's a good idea to use either a
   validating editor or run a stand-alone validating parser prior to
   using the tool.

3.3 Converting to HTML Format

   The XML Style Language (XSL) is used to describe transformations from
   the source file into some other structured file. So, ideally you
   should use an XSL-capable formatter to convert an XML source file to
   HTML.

   However, as of this writing XSL is still in considerable flux.
   (Hence, no reference was included in this memo, as by the time you
   read this section, the reference would be outdated.) So, in the
   interim, the author uses the xml2rfc tool for this purpose, even
   though this tool doesn't provide much flexibility in its HTML layout.

3.4 Viewing

   Browsers that support either XSL or Cascading Style Sheets (CSS) are
   able to view the source file directly.

   At present, the author doesn't use any of these browsers, instead
   converting source files to either text or HTML.

3.5 Searching

   As with text editors, any text-oriented search tool (e.g., grep) can
   be used on the source file. However, there are search tools available
   that understand structured source.

   The author uses sgrep version 1.9 [11] for this purpose, e.g.

       sgrep -g xml 'ELEMENTS("title") not in ELEMENTS("back")' \
           writing-rfcs.xml

   which extracts the title element from the source file.









Rose                         Informational                     [Page 20]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


4. Security Considerations

   This memo raises no security issues; however, according to [2], your
   document should contain a section near the end that discusses the
   security considerations of the protocol or procedures that are the
   main topic of your document, e.g.,

       <middle>
           ...
           <section title="Security Considerations">
               <t>This memo raises no security issues;
               however,
               according to <xref target="refs.RFC2223" />,
               your document should contain a section near the end
               that discusses the security considerations of the
               protocol or procedures that are the main topic of your
               document.</t>
           </section>
       </middle>
































Rose                         Informational                     [Page 21]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


References

   [1]  World Wide Web Consortium, "Extensible Markup Language (XML)
        1.0", W3C XML, February 1998.

   [2]  Postel, J. and J. Reynolds, "Instructions to RFC Authors", RFC
        2223, October 1997.

   [3]  Bradner, S., "The Internet Standards Process -- Revision 3", BCP
        9, RFC 2026, October 1996.

   [4]  Berners-Lee, T., Fielding, R. and L. Masinter, "Uniform Resource
        Identifiers (URI): Generic Syntax", RFC 2396, August 1998.

   [5]  http://metalab.unc.edu/xml/

   [6]  http://www.mulberrytech.com/tdtd/

   [7]  http://www.inria.fr/koala/plh/sxml.html

   [8]  http://www.t2000-usa.com/

   [9]  http://www.alphaworks.ibm.com/formula/xml/

   [10]  http://memory.palace.org/authoring/

   [11]  http://www.cs.helsinki.fi/~jjaakkol/sgrep.html

Author's Address

   Marshall T. Rose
   Invisible Worlds, Inc.
   660 York Street
   San Francisco, CA  94110
   US

   Phone: +1 415 695 3975
   EMail: mrose@not.invisible.net
   URI:   http://invisible.net/












Rose                         Informational                     [Page 22]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


Appendix A. The rfc Element

   The "<rfc>" tag at the beginning of the file, with only an "ipr"
   attribute (Section 2.2.7.1), produces an Internet-Draft. However,
   when other attributes are added to this tag by the RFC editor, an RFC
   is produced, e.g.,

       <rfc number="2200"
            obsoletes="2000, 1920, 1880, 1800, ..."
            category="std"
            seriesNo="1">

   At a minimum, the "number" attribute should be present.

   The other attributes are:

   o  "obsoletes", having a comma-separated list of RFC numbers, that
      the document obsoletes;

   o  "updates", having a comma-separated list of RFC numbers, that the
      document updates;

   o  "category", having one of these values:

      1.  "std", for a Standards-Track document;

      2.  "bcp", "for a Best Current Practices document;

      3.  "exp", for an Experimental Protocol document;

      4.  "historic", for a historic document; or,

      5.  "info", the default, for an Informational document.

   o  "seriesNo", having the corresponding number in the STD (std), BCP
      (bcp), or FYI (info) series.

   Finally, a special entity, "&rfc.number;", is available. Authors
   preparing an RFC should use this entity whenever they want to
   reference the number of the RFC within the document itself. In
   printed versions of the document, the appropriate substitution (or
   "XXXX") will occur.









Rose                         Informational                     [Page 23]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


Appendix B. The RFC DTD

   <!--
     DTD for the RFC document series, draft of 99-01-30
     -->


   <!--
     Contents

       DTD data types

       The top-level

       Front matter

       The Body

       Back matter
     -->


   <!--
     DTD data types:

           entity        description
           ======        ===============================================
           NUMBER        [0-9]+
           NUMBERS       a comma-separated list of NUMBER

           DAY           the day of the month, e.g., "1"
           MONTH         the month of the year, e.g., "January"
           YEAR          a four-digit year, e.g., "1999"

           URI           e.g., "http://invisible.net/"

           ATEXT/CTEXT   printable ASCII text (no line-terminators)

           TEXT          character data
     -->


   <!ENTITY % NUMBER     "CDATA">
   <!ENTITY % NUMBERS    "CDATA">

   <!ENTITY % DAY        "CDATA">
   <!ENTITY % MONTH      "CDATA">
   <!ENTITY % YEAR       "CDATA">



Rose                         Informational                     [Page 24]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


   <!ENTITY % URI        "CDATA">

   <!ENTITY % ATEXT      "CDATA">
   <!ENTITY % CTEXT      "#PCDATA">

   <!ENTITY % TEXT       "#PCDATA">

   <!ENTITY   rfc.number "2629">


   <!--
     The top-level
     -->


   <!--
     attributes for the "rfc" element are supplied by the RFC
     editor. when preparing drafts, authors should leave them blank.

     the "seriesNo" attribute is used if the category is, e.g., BCP.
     -->
   <!ELEMENT rfc         (front,middle,back?)>
   <!ATTLIST rfc
             number      %NUMBER;           #IMPLIED
             obsoletes   %NUMBERS;          ""
             updates     %NUMBERS;          ""
             category    (std|bcp|info|exp|historic)
                                            "info"
             seriesNo    %NUMBER;           #IMPLIED
             ipr         (full2026|noDerivativeWorks2026|none)
                                            #IMPLIED
             docName     %ATEXT;            #IMPLIED>

   <!--
     Front matter
     -->


   <!ELEMENT front       (title,author+,date,area*,workgroup*,keyword*,
                          abstract?,note*)>

   <!-- the "abbrev" attribute is used for headers, etc. -->
   <!ELEMENT title       (%CTEXT;)>
   <!ATTLIST title
             abbrev      %ATEXT;            #IMPLIED>

   <!ELEMENT author      (organization,address?)>
   <!ATTLIST author



Rose                         Informational                     [Page 25]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


             initials    %ATEXT;            #IMPLIED
             surname     %ATEXT;            #IMPLIED
             fullname    %ATEXT;            #IMPLIED>

   <!ELEMENT organization
                         (%CTEXT;)>
   <!ATTLIST organization
             abbrev      %ATEXT;            #IMPLIED>

   <!ELEMENT address     (postal?,phone?,facsimile?,email?,uri?)>

   <!-- at most one of each the city, region, code, and country
        elements may be present -->
   <!ELEMENT postal      (street+,(city|region|code|country)*)>
   <!ELEMENT street      (%CTEXT;)>
   <!ELEMENT city        (%CTEXT;)>
   <!ELEMENT region      (%CTEXT;)>
   <!ELEMENT code        (%CTEXT;)>
   <!ELEMENT country     (%CTEXT;)>
   <!ELEMENT phone       (%CTEXT;)>
   <!ELEMENT facsimile   (%CTEXT;)>
   <!ELEMENT email       (%CTEXT;)>
   <!ELEMENT uri         (%CTEXT;)>

   <!ELEMENT date        EMPTY>
   <!ATTLIST date
             day         %DAY;              #IMPLIED
             month       %MONTH;            #REQUIRED
             year        %YEAR;             #REQUIRED>

   <!-- meta-data... -->
   <!ELEMENT area        (%CTEXT;)>
   <!ELEMENT workgroup   (%CTEXT;)>
   <!ELEMENT keyword     (%CTEXT;)>

   <!ELEMENT abstract    (t)+>
   <!ELEMENT note        (t)+>
   <!ATTLIST note
             title       %ATEXT;            #REQUIRED>


   <!--
     The body
     -->


   <!ELEMENT middle      (section)+>




Rose                         Informational                     [Page 26]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


   <!ELEMENT section     (t|figure|section)*>
   <!ATTLIST section
             anchor      ID                 #IMPLIED
             title       %ATEXT;            #REQUIRED>

   <!ELEMENT t           (%TEXT;|list|figure|xref|eref|iref|vspace)*>
   <!ATTLIST t
             hangText    %ATEXT;            #IMPLIED>

   <!-- the value of the style attribute is inherited from the closest
        parent -->
   <!ELEMENT list        (t+)>
   <!ATTLIST list
             style       (numbers|symbols|hanging|empty)
                                            "empty">

   <!ELEMENT xref        (%CTEXT;)>
   <!ATTLIST xref
             target      IDREF              #REQUIRED
             pageno      (true|false)       "false">

   <!ELEMENT eref        (%CTEXT;)>
   <!ATTLIST eref
             target      %URI;              #REQUIRED>

   <!ELEMENT iref        EMPTY>
   <!ATTLIST iref
             item        %ATEXT;            #REQUIRED
             subitem     %ATEXT;            "">

   <!ELEMENT vspace      EMPTY>
   <!ATTLIST vspace
             blankLines  %NUMBER;           "0">

   <!ELEMENT figure      (preamble?,artwork,postamble?)>
   <!ATTLIST figure
             anchor      ID                 #IMPLIED
             title       %ATEXT;            "">

   <!ELEMENT preamble    (%TEXT;|xref|eref|iref)*>
   <!ELEMENT artwork     (%TEXT;)*>
   <!ATTLIST artwork
             xml:space   (default|preserve) "preserve">
   <!ELEMENT postamble   (%TEXT;|xref|eref|iref)*>


   <!--
     Back matter



Rose                         Informational                     [Page 27]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


     -->

   <!-- sections, if present, are appendices -->
   <!ELEMENT back        (references?,section*)>

   <!ELEMENT references  (reference+)>
   <!ELEMENT reference   (front,seriesInfo*)>
   <!ATTLIST reference
             anchor      ID                 #IMPLIED
             target      %URI;              #IMPLIED>
   <!ELEMENT seriesInfo  EMPTY>
   <!ATTLIST seriesInfo
             name        %ATEXT;            #REQUIRED
             value       %ATEXT;            #REQUIRED>





































Rose                         Informational                     [Page 28]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


Appendix C. Acknowledgements

   The author gratefully acknowledges the contributions of: Alan
   Barrett, Brad Burdick, Brian Carpenter, Steve Deering, Patrik
   Faltstrom, Jim Gettys, Carl Malamud, Chris Newman, Kurt Starsinic,
   and, Frank Strauss.













































Rose                         Informational                     [Page 29]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


Index

I
   indexing
      how to  16














































Rose                         Informational                     [Page 30]
^L
RFC 2629            Writing I-Ds and RFCs using XML            June 1999


Full Copyright Statement

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implementation may be prepared, copied, published
   and distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph are
   included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
   Internet organizations, except as needed for the purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet Standards process must be
   followed, or as required to translate it into languages other than
   English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assigns.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.



















Rose                         Informational                     [Page 31]
^L