Annotation of mandoc/mandoc_headers.3, Revision 1.32
1.32 ! schwarze 1: .\" $Id: mandoc_headers.3,v 1.31 2019/03/17 18:21:45 schwarze Exp $
1.31 schwarze 2: .\"
3: .\" Copyright (c) 2014-2019 Ingo Schwarze <schwarze@openbsd.org>
4: .\"
5: .\" Permission to use, copy, modify, and distribute this software for any
6: .\" purpose with or without fee is hereby granted, provided that the above
7: .\" copyright notice and this permission notice appear in all copies.
8: .\"
9: .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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13: .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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1.32 ! schwarze 17: .Dd $Mdocdate: March 17 2019 $
1.1 schwarze 18: .Dt MANDOC_HEADERS 3
19: .Os
20: .Sh NAME
21: .Nm mandoc_headers
22: .Nd ordering of mandoc include files
23: .Sh DESCRIPTION
24: To support a cleaner coding style, the mandoc header files do not
25: contain any include directives and do not guard against multiple
26: inclusion.
27: The application developer has to make sure that the headers are
28: included in a proper order, and that no header is included more
29: than once.
30: .Pp
31: The headers and functions form three major groups:
32: .Sx Parser interface ,
33: .Sx Parser internals ,
34: and
35: .Sx Formatter interface .
36: .Pp
37: Various rules are given below prohibiting the inclusion of certain
38: combinations of headers into the same file.
39: The intention is to keep the following functional components
40: separate from each other:
41: .Pp
42: .Bl -dash -offset indent -compact
43: .It
1.20 schwarze 44: .Xr roff 7
45: parser
46: .It
1.1 schwarze 47: .Xr mdoc 7
48: parser
49: .It
50: .Xr man 7
51: parser
52: .It
53: .Xr tbl 7
54: parser
55: .It
56: .Xr eqn 7
57: parser
58: .It
59: terminal formatters
60: .It
61: HTML formatters
62: .It
63: search tools
1.20 schwarze 64: .It
65: main programs
1.1 schwarze 66: .El
67: .Pp
1.2 schwarze 68: Note that mere usage of an opaque struct type does
1.1 schwarze 69: .Em not
70: require inclusion of the header where that type is defined.
71: .Ss Parser interface
72: Each of the following headers can be included without including
73: any other mandoc header.
74: These headers should be included before any other mandoc headers.
75: .Bl -tag -width Ds
76: .It Qq Pa mandoc_aux.h
1.20 schwarze 77: Memory allocation utility functions; can be used everywhere.
78: .Pp
1.1 schwarze 79: Requires
80: .In sys/types.h
81: for
82: .Vt size_t .
1.11 schwarze 83: .Pp
1.20 schwarze 84: Provides the functions documented in
1.1 schwarze 85: .Xr mandoc_malloc 3 .
1.8 schwarze 86: .It Qq Pa mandoc_ohash.h
1.20 schwarze 87: Hashing utility functions; can be used everywhere.
88: .Pp
1.11 schwarze 89: Requires
90: .In stddef.h
91: for
92: .Vt ptrdiff_t
93: and
94: .In stdint.h
95: for
96: .Vt uint32_t .
97: .Pp
1.8 schwarze 98: Includes
99: .In ohash.h
100: and provides
101: .Fn mandoc_ohash_init .
1.1 schwarze 102: .It Qq Pa mandoc.h
1.26 schwarze 103: Error handling, escape sequence, and character utilities;
1.20 schwarze 104: can be used everywhere.
105: .Pp
1.1 schwarze 106: Requires
107: .In sys/types.h
108: for
1.27 schwarze 109: .Vt size_t
110: and
111: .In stdio.h
112: for
113: .Vt FILE .
1.1 schwarze 114: .Pp
115: Provides
116: .Vt enum mandoc_esc ,
117: .Vt enum mandocerr ,
118: .Vt enum mandoclevel ,
119: the function
120: .Xr mandoc_escape 3 ,
1.27 schwarze 121: the functions described in
122: .Xr mchars_alloc 3 ,
123: and the
124: .Fn mandoc_msg*
125: functions.
1.26 schwarze 126: .It Qq Pa roff.h
127: Common data types for all syntax trees and related functions;
128: can be used everywhere.
129: .Pp
130: Provides
131: .Vt enum mandoc_os ,
132: .Vt enum mdoc_endbody ,
133: .Vt enum roff_macroset ,
134: .Vt enum roff_sec ,
135: .Vt enum roff_tok ,
136: .Vt enum roff_type ,
137: .Vt struct roff_man ,
138: .Vt struct roff_meta ,
139: .Vt struct roff_node ,
140: the constant array
141: .Va roff_name
1.30 schwarze 142: and the function
143: .Fn deroff .
1.1 schwarze 144: .Pp
1.26 schwarze 145: Uses pointers to the types
146: .Vt struct ohash
1.1 schwarze 147: from
1.31 schwarze 148: .Qq Pa mandoc_ohash.h ,
1.26 schwarze 149: .Vt struct mdoc_arg
150: and
151: .Vt union mdoc_data
1.1 schwarze 152: from
1.31 schwarze 153: .Qq Pa mdoc.h ,
1.30 schwarze 154: .Vt struct tbl_span
155: from
1.31 schwarze 156: .Qq Pa tbl.h ,
1.30 schwarze 157: and
158: .Vt struct eqn_box
159: from
1.31 schwarze 160: .Qq Pa eqn.h
1.26 schwarze 161: as opaque struct members.
1.20 schwarze 162: .It Qq Pa tbl.h
163: Data structures for the
164: .Xr tbl 7
165: parse tree; can be used everywhere.
166: .Pp
167: Requires
168: .In sys/types.h
169: for
170: .Vt size_t .
171: .Pp
172: Provides
173: .Vt enum tbl_cellt ,
174: .Vt enum tbl_datt ,
175: .Vt enum tbl_spant ,
176: .Vt struct tbl_opts ,
177: .Vt struct tbl_cell ,
178: .Vt struct tbl_row ,
179: .Vt struct tbl_dat ,
180: and
181: .Vt struct tbl_span .
1.23 schwarze 182: .It Qq Pa eqn.h
183: Data structures for the
184: .Xr eqn 7
185: parse tree; can be used everywhere.
186: .Pp
187: Requires
188: .In sys/types.h
189: for
190: .Vt size_t .
191: .Pp
192: Provides
193: .Vt enum eqn_boxt ,
194: .Vt enum eqn_fontt ,
195: .Vt enum eqn_post ,
196: and
197: .Vt struct eqn_box .
1.26 schwarze 198: .It Qq Pa mandoc_parse.h
199: Top level parser interface, for use in the main program
200: and in the main parser, but not in formatters.
201: .Pp
202: Requires
1.31 schwarze 203: .Qq Pa mandoc.h
1.26 schwarze 204: for
1.30 schwarze 205: .Vt enum mandocerr
1.26 schwarze 206: and
1.30 schwarze 207: .Vt enum mandoclevel
1.26 schwarze 208: and
1.31 schwarze 209: .Qq Pa roff.h
1.26 schwarze 210: for
211: .Vt enum mandoc_os .
212: .Pp
1.28 schwarze 213: Uses the opaque type
1.26 schwarze 214: .Vt struct mparse
215: from
216: .Pa read.c
217: for function prototypes.
218: Uses
1.30 schwarze 219: .Vt struct roff_meta
1.26 schwarze 220: from
1.31 schwarze 221: .Qq Pa roff.h
1.26 schwarze 222: as an opaque type for function prototypes.
1.15 schwarze 223: .It Qq Pa mandoc_xr.h
1.20 schwarze 224: Cross reference validation; intended for use in the main program
225: and in parsers, but not in formatters.
226: .Pp
1.15 schwarze 227: Provides
228: .Vt struct mandoc_xr
229: and the functions
230: .Fn mandoc_xr_reset ,
231: .Fn mandoc_xr_add ,
232: .Fn mandoc_xr_get ,
233: and
234: .Fn mandoc_xr_free .
1.4 schwarze 235: .El
236: .Pp
237: The following two require
238: .Qq Pa roff.h
239: but no other mandoc headers.
240: Afterwards, any other mandoc headers can be included as needed.
241: .Bl -tag -width Ds
1.1 schwarze 242: .It Qq Pa mdoc.h
243: Requires
244: .In sys/types.h
245: for
1.8 schwarze 246: .Vt size_t .
1.1 schwarze 247: .Pp
248: Provides
249: .Vt enum mdocargt ,
1.8 schwarze 250: .Vt enum mdoc_auth ,
1.1 schwarze 251: .Vt enum mdoc_disp ,
1.8 schwarze 252: .Vt enum mdoc_font ,
1.1 schwarze 253: .Vt enum mdoc_list ,
254: .Vt struct mdoc_argv ,
255: .Vt struct mdoc_arg ,
1.8 schwarze 256: .Vt struct mdoc_an ,
1.1 schwarze 257: .Vt struct mdoc_bd ,
1.8 schwarze 258: .Vt struct mdoc_bf ,
1.1 schwarze 259: .Vt struct mdoc_bl ,
260: .Vt struct mdoc_rs ,
1.8 schwarze 261: .Vt union mdoc_data ,
1.1 schwarze 262: and the functions
263: .Fn mdoc_*
264: described in
265: .Xr mandoc 3 .
266: .Pp
1.30 schwarze 267: Uses the types
268: .Vt struct roff_node
269: from
1.31 schwarze 270: .Qq Pa roff.h
1.30 schwarze 271: and
1.8 schwarze 272: .Vt struct roff_man
1.1 schwarze 273: from
1.31 schwarze 274: .Qq Pa roff_int.h
1.30 schwarze 275: as opaque types for function prototypes.
1.1 schwarze 276: .Pp
277: When this header is included, the same file should not include
1.22 schwarze 278: internals of different parsers.
1.1 schwarze 279: .It Qq Pa man.h
1.6 schwarze 280: Provides the functions
1.1 schwarze 281: .Fn man_*
282: described in
283: .Xr mandoc 3 .
284: .Pp
285: Uses the type
1.8 schwarze 286: .Vt struct roff_man
1.1 schwarze 287: from
1.31 schwarze 288: .Qq Pa roff.h
1.1 schwarze 289: as an opaque type for function prototypes.
290: .Pp
291: When this header is included, the same file should not include
1.22 schwarze 292: internals of different parsers.
1.1 schwarze 293: .El
294: .Ss Parser internals
1.21 schwarze 295: Most of the following headers require inclusion of a parser interface header
1.9 schwarze 296: before they can be included.
297: All parser interface headers should precede all parser internal headers.
298: When any parser internal headers are included, the same file should
299: not include any formatter headers.
1.1 schwarze 300: .Bl -tag -width Ds
301: .It Qq Pa libmandoc.h
302: Requires
303: .In sys/types.h
304: for
1.8 schwarze 305: .Vt size_t
306: and
1.6 schwarze 307: .Qq Pa mandoc.h
308: for
1.8 schwarze 309: .Vt enum mandocerr .
1.1 schwarze 310: .Pp
311: Provides
312: .Vt struct buf ,
313: utility functions needed by multiple parsers,
314: and the top-level functions to call the parsers.
315: .Pp
1.28 schwarze 316: Uses the opaque type
1.1 schwarze 317: .Vt struct roff
318: from
319: .Pa roff.c
320: for function prototypes.
1.18 schwarze 321: Uses the type
1.8 schwarze 322: .Vt struct roff_man
323: from
1.31 schwarze 324: .Qq Pa roff.h
1.18 schwarze 325: as an opaque type for function prototypes.
1.8 schwarze 326: .It Qq Pa roff_int.h
1.24 schwarze 327: Parser internals shared by multiple parsers.
328: Can be used in all parsers, but not in main programs or formatters.
329: .Pp
1.8 schwarze 330: Requires
331: .Qq Pa roff.h
332: for
1.24 schwarze 333: .Vt enum roff_type
334: and
335: .Vt enum roff_tok .
1.8 schwarze 336: .Pp
1.30 schwarze 337: Provides
338: .Vt enum roff_next ,
339: .Vt struct roff_man ,
340: functions named
1.8 schwarze 341: .Fn roff_*
1.24 schwarze 342: to handle roff nodes,
343: .Fn roffhash_alloc ,
344: .Fn roffhash_find ,
1.30 schwarze 345: .Fn roffhash_free ,
1.24 schwarze 346: and
1.30 schwarze 347: .Fn roff_validate ,
1.24 schwarze 348: and the two special functions
1.8 schwarze 349: .Fn man_breakscope
350: and
351: .Fn mdoc_argv_free
352: because the latter two are needed by
1.31 schwarze 353: .Pa roff.c .
1.8 schwarze 354: .Pp
355: Uses the types
1.30 schwarze 356: .Vt struct ohash
357: from
1.31 schwarze 358: .Qq Pa mandoc_ohash.h ,
1.30 schwarze 359: .Vt struct roff_node
1.8 schwarze 360: and
1.30 schwarze 361: .Vt struct roff_meta
362: from
1.31 schwarze 363: .Qq Pa roff.h ,
1.30 schwarze 364: .Vt struct roff
1.1 schwarze 365: from
1.30 schwarze 366: .Pa roff.c ,
1.1 schwarze 367: and
1.8 schwarze 368: .Vt struct mdoc_arg
1.1 schwarze 369: from
1.31 schwarze 370: .Qq Pa mdoc.h
1.1 schwarze 371: as opaque types for function prototypes.
372: .It Qq Pa libmdoc.h
373: Requires
1.10 schwarze 374: .Qq Pa roff.h
375: for
376: .Vt enum roff_tok
377: and
1.25 schwarze 378: .Vt enum roff_sec .
1.1 schwarze 379: .Pp
380: Provides
381: .Vt enum margserr ,
382: .Vt enum mdelim ,
383: .Vt struct mdoc_macro ,
384: and many functions internal to the
385: .Xr mdoc 7
386: parser.
387: .Pp
1.8 schwarze 388: Uses the types
1.30 schwarze 389: .Vt struct roff_node
390: from
1.31 schwarze 391: .Qq Pa roff.h ,
1.8 schwarze 392: .Vt struct roff_man
1.1 schwarze 393: from
1.31 schwarze 394: .Qq Pa roff_int.h ,
1.25 schwarze 395: and
396: .Vt struct mdoc_arg
397: from
1.31 schwarze 398: .Qq Pa mdoc.h
1.8 schwarze 399: as opaque types for function prototypes.
1.1 schwarze 400: .Pp
401: When this header is included, the same file should not include
1.22 schwarze 402: interfaces of different parsers.
1.1 schwarze 403: .It Qq Pa libman.h
1.10 schwarze 404: Requires
405: .Qq Pa roff.h
406: for
407: .Vt enum roff_tok .
1.11 schwarze 408: .Pp
1.1 schwarze 409: Provides
1.8 schwarze 410: .Vt struct man_macro
411: and some functions internal to the
1.1 schwarze 412: .Xr man 7
413: parser.
414: .Pp
1.8 schwarze 415: Uses the types
416: .Vt struct roff_node
1.1 schwarze 417: from
1.31 schwarze 418: .Qq Pa roff.h
1.30 schwarze 419: and
420: .Vt struct roff_man
421: from
1.31 schwarze 422: .Qq Pa roff_int.h
1.8 schwarze 423: as opaque types for function prototypes.
1.1 schwarze 424: .Pp
425: When this header is included, the same file should not include
1.22 schwarze 426: interfaces of different parsers.
427: .It Qq Pa eqn_parse.h
428: External interface of the
429: .Xr eqn 7
430: parser, for use in the
431: .Xr roff 7
432: and
433: .Xr eqn 7
434: parsers only.
435: .Pp
1.1 schwarze 436: Requires
437: .In sys/types.h
438: for
1.22 schwarze 439: .Vt size_t .
1.1 schwarze 440: .Pp
441: Provides
1.22 schwarze 442: .Vt struct eqn_node
443: and the functions
444: .Fn eqn_alloc ,
1.23 schwarze 445: .Fn eqn_box_new ,
1.22 schwarze 446: .Fn eqn_box_free ,
447: .Fn eqn_free ,
448: .Fn eqn_parse ,
449: .Fn eqn_read ,
450: and
451: .Fn eqn_reset .
1.1 schwarze 452: .Pp
1.22 schwarze 453: Uses the type
454: .Vt struct eqn_box
455: from
1.31 schwarze 456: .Qq Pa mandoc.h
1.22 schwarze 457: as an opaque type for function prototypes.
458: Uses the types
459: .Vt struct roff_node
460: from
1.31 schwarze 461: .Qq Pa roff.h
1.22 schwarze 462: and
463: .Vt struct eqn_def
464: from
465: .Pa eqn.c
466: as opaque struct members.
1.1 schwarze 467: .Pp
468: When this header is included, the same file should not include
1.22 schwarze 469: internals of different parsers.
1.21 schwarze 470: .It Qq Pa tbl_parse.h
471: External interface of the
472: .Xr tbl 7
473: parser, for use in the
474: .Xr roff 7
475: and
476: .Xr tbl 7
477: parsers only.
478: .Pp
479: Provides the functions documented in
480: .Xr tbl 3 .
481: .Pp
482: Uses the types
483: .Vt struct tbl_span
484: from
1.31 schwarze 485: .Qq Pa tbl.h
1.21 schwarze 486: and
487: .Vt struct tbl_node
488: from
1.31 schwarze 489: .Qq Pa tbl_int.h
1.21 schwarze 490: as opaque types for function prototypes.
491: .Pp
492: When this header is included, the same file should not include
1.22 schwarze 493: internals of different parsers.
1.21 schwarze 494: .It Qq Pa tbl_int.h
495: Internal interfaces of the
496: .Xr tbl 7
497: parser, for use inside the
498: .Xr tbl 7
499: parser only.
500: .Pp
501: Requires
502: .Qq Pa tbl.h
503: for
504: .Vt struct tbl_opts .
505: .Pp
506: Provides
507: .Vt enum tbl_part ,
508: .Vt struct tbl_node ,
509: and the functions
510: .Fn tbl_option ,
511: .Fn tbl_layout ,
512: .Fn tbl_data ,
513: .Fn tbl_cdata ,
514: and
515: .Fn tbl_reset .
516: .Pp
517: When this header is included, the same file should not include
518: interfaces of different parsers.
1.1 schwarze 519: .El
520: .Ss Formatter interface
521: These headers should be included after any parser interface headers.
522: No parser internal headers should be included by the same file.
523: .Bl -tag -width Ds
524: .It Qq Pa out.h
525: Requires
526: .In sys/types.h
527: for
528: .Vt size_t .
529: .Pp
530: Provides
531: .Vt enum roffscale ,
532: .Vt struct roffcol ,
533: .Vt struct roffsu ,
534: .Vt struct rofftbl ,
535: .Fn a2roffsu ,
536: and
537: .Fn tblcalc .
538: .Pp
539: Uses
540: .Vt struct tbl_span
541: from
1.31 schwarze 542: .Qq Pa mandoc.h
1.1 schwarze 543: as an opaque type for function prototypes.
544: .Pp
545: When this header is included, the same file should not include
1.31 schwarze 546: .Qq Pa mansearch.h .
1.1 schwarze 547: .It Qq Pa term.h
548: Requires
549: .In sys/types.h
550: for
551: .Vt size_t
552: and
553: .Qq Pa out.h
554: for
555: .Vt struct roffsu
556: and
557: .Vt struct rofftbl .
558: .Pp
559: Provides
560: .Vt enum termenc ,
561: .Vt enum termfont ,
562: .Vt enum termtype ,
563: .Vt struct termp_tbl ,
564: .Vt struct termp ,
1.12 schwarze 565: .Fn roff_term_pre ,
1.1 schwarze 566: and many terminal formatting functions.
567: .Pp
1.7 schwarze 568: Uses the opaque type
1.1 schwarze 569: .Vt struct termp_ps
570: from
571: .Pa term_ps.c .
572: Uses
573: .Vt struct tbl_span
574: and
1.17 schwarze 575: .Vt struct eqn_box
1.1 schwarze 576: from
1.31 schwarze 577: .Qq Pa mandoc.h
1.6 schwarze 578: and
579: .Vt struct roff_meta
1.12 schwarze 580: and
581: .Vt struct roff_node
1.6 schwarze 582: from
1.31 schwarze 583: .Qq Pa roff.h
1.1 schwarze 584: as opaque types for function prototypes.
585: .Pp
586: When this header is included, the same file should not include
1.31 schwarze 587: .Qq Pa html.h
1.1 schwarze 588: or
1.31 schwarze 589: .Qq Pa mansearch.h .
1.1 schwarze 590: .It Qq Pa html.h
591: Requires
592: .In sys/types.h
593: for
1.29 schwarze 594: .Vt size_t ,
1.31 schwarze 595: .Qq Pa mandoc.h
1.29 schwarze 596: for
597: .Vt enum mandoc_esc ,
1.31 schwarze 598: .Qq Pa roff.h
599: for
600: .Vt enum roff_tok ,
1.1 schwarze 601: and
602: .Qq Pa out.h
603: for
604: .Vt struct roffsu
605: and
606: .Vt struct rofftbl .
607: .Pp
608: Provides
609: .Vt enum htmltag ,
610: .Vt enum htmlattr ,
611: .Vt enum htmlfont ,
612: .Vt struct tag ,
613: .Vt struct tagq ,
614: .Vt struct htmlpair ,
615: .Vt struct html ,
1.12 schwarze 616: .Fn roff_html_pre ,
1.1 schwarze 617: and many HTML formatting functions.
1.12 schwarze 618: .Pp
619: Uses
620: .Vt struct tbl_span
621: and
1.17 schwarze 622: .Vt struct eqn_box
1.12 schwarze 623: from
1.31 schwarze 624: .Qq Pa mandoc.h
1.12 schwarze 625: and
626: .Vt struct roff_node
627: from
1.31 schwarze 628: .Qq Pa roff.h
1.12 schwarze 629: as opaque types for function prototypes.
1.1 schwarze 630: .Pp
631: When this header is included, the same file should not include
1.31 schwarze 632: .Qq Pa term.h
1.1 schwarze 633: or
1.31 schwarze 634: .Qq Pa mansearch.h .
1.8 schwarze 635: .It Qq Pa tag.h
636: Requires
637: .In sys/types.h
638: for
1.32 ! schwarze 639: .Vt size_t
! 640: and
! 641: .In limits.h
! 642: for
! 643: .Dv INT_MAX .
1.8 schwarze 644: .Pp
645: Provides an interface to generate
646: .Xr ctags 1
647: files for the
648: .Ic :t
649: functionality mentioned in
650: .Xr man 1 .
1.1 schwarze 651: .It Qq Pa main.h
652: Provides the top level steering functions for all formatters.
653: .Pp
1.8 schwarze 654: Uses the type
1.30 schwarze 655: .Vt struct roff_meta
1.1 schwarze 656: from
1.31 schwarze 657: .Qq Pa roff.h
1.8 schwarze 658: as an opaque type for function prototypes.
1.3 schwarze 659: .It Qq Pa manconf.h
1.1 schwarze 660: Requires
661: .In sys/types.h
662: for
663: .Vt size_t .
664: .Pp
665: Provides
1.3 schwarze 666: .Vt struct manconf ,
667: .Vt struct manpaths ,
668: .Vt struct manoutput ,
1.1 schwarze 669: and the functions
1.3 schwarze 670: .Fn manconf_parse ,
671: .Fn manconf_output ,
1.15 schwarze 672: .Fn manconf_free ,
1.1 schwarze 673: and
1.15 schwarze 674: .Fn manpath_base .
1.1 schwarze 675: .It Qq Pa mansearch.h
676: Requires
677: .In sys/types.h
678: for
679: .Vt size_t
680: and
681: .In stdint.h
682: for
683: .Vt uint64_t .
684: .Pp
685: Provides
686: .Vt enum argmode ,
687: .Vt struct manpage ,
688: .Vt struct mansearch ,
689: and the functions
1.9 schwarze 690: .Fn mansearch
1.1 schwarze 691: and
692: .Fn mansearch_free .
693: .Pp
694: Uses
695: .Vt struct manpaths
696: from
1.31 schwarze 697: .Qq Pa manconf.h
1.1 schwarze 698: as an opaque type for function prototypes.
699: .Pp
700: When this header is included, the same file should not include
1.31 schwarze 701: .Qq Pa out.h ,
702: .Qq Pa term.h ,
1.1 schwarze 703: or
1.31 schwarze 704: .Qq Pa html.h .
1.1 schwarze 705: .El
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