Annotation of mandoc/man.7, Revision 1.135
1.135 ! schwarze 1: .\" $Id: man.7,v 1.134 2017/05/05 15:54:59 schwarze Exp $
1.1 kristaps 2: .\"
1.115 schwarze 3: .\" Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.129 schwarze 4: .\" Copyright (c) 2011-2015 Ingo Schwarze <schwarze@openbsd.org>
1.122 schwarze 5: .\" Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
1.1 kristaps 6: .\"
7: .\" Permission to use, copy, modify, and distribute this software for any
1.10 kristaps 8: .\" purpose with or without fee is hereby granted, provided that the above
9: .\" copyright notice and this permission notice appear in all copies.
10: .\"
11: .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12: .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13: .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14: .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15: .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16: .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17: .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 18: .\"
1.134 schwarze 19: .Dd $Mdocdate: May 5 2017 $
1.9 kristaps 20: .Dt MAN 7
1.1 kristaps 21: .Os
22: .Sh NAME
1.32 kristaps 23: .Nm man
1.111 schwarze 24: .Nd legacy formatting language for manual pages
1.1 kristaps 25: .Sh DESCRIPTION
1.111 schwarze 26: Traditionally, the
1.32 kristaps 27: .Nm man
1.111 schwarze 28: language has been used to write
1.32 kristaps 29: .Ux
1.111 schwarze 30: manuals for the
31: .Xr man 1
32: utility.
33: It supports limited control of presentational details like fonts,
34: indentation and spacing.
35: This reference document describes the structure of manual pages
36: and the syntax and usage of the man language.
1.32 kristaps 37: .Pp
38: .Bf -emphasis
1.20 kristaps 39: Do not use
1.32 kristaps 40: .Nm
1.111 schwarze 41: to write your manuals:
1.32 kristaps 42: .Ef
1.111 schwarze 43: It lacks support for semantic markup.
1.19 kristaps 44: Use the
1.32 kristaps 45: .Xr mdoc 7
1.1 kristaps 46: language, instead.
1.32 kristaps 47: .Pp
1.111 schwarze 48: In a
1.32 kristaps 49: .Nm
1.111 schwarze 50: document, lines beginning with the control character
1.32 kristaps 51: .Sq \&.
1.111 schwarze 52: are called
53: .Dq macro lines .
54: The first word is the macro name.
55: It usually consists of two capital letters.
56: For a list of available macros, see
57: .Sx MACRO OVERVIEW .
58: The words following the macro name are arguments to the macro.
59: .Pp
60: Lines not beginning with the control character are called
61: .Dq text lines .
62: They provide free-form text to be printed; the formatting of the text
63: depends on the respective processing context:
1.32 kristaps 64: .Bd -literal -offset indent
1.1 kristaps 65: \&.SH Macro lines change control state.
1.106 kristaps 66: Text lines are interpreted within the current state.
1.32 kristaps 67: .Ed
1.103 kristaps 68: .Pp
1.111 schwarze 69: Many aspects of the basic syntax of the
1.103 kristaps 70: .Nm
1.111 schwarze 71: language are based on the
72: .Xr roff 7
73: language; see the
74: .Em LANGUAGE SYNTAX
1.106 kristaps 75: and
1.111 schwarze 76: .Em MACRO SYNTAX
77: sections in the
78: .Xr roff 7
79: manual for details, in particular regarding
80: comments, escape sequences, whitespace, and quoting.
1.22 kristaps 81: .Sh MANUAL STRUCTURE
1.16 kristaps 82: Each
1.32 kristaps 83: .Nm
1.80 kristaps 84: document must contain the
1.39 kristaps 85: .Sx \&TH
1.68 kristaps 86: macro describing the document's section and title.
1.80 kristaps 87: It may occur anywhere in the document, although conventionally it
1.68 kristaps 88: appears as the first macro.
1.32 kristaps 89: .Pp
1.22 kristaps 90: Beyond
1.39 kristaps 91: .Sx \&TH ,
1.111 schwarze 92: at least one macro or text line must appear in the document.
1.100 kristaps 93: .Pp
94: The following is a well-formed skeleton
95: .Nm
96: file for a utility
97: .Qq progname :
1.32 kristaps 98: .Bd -literal -offset indent
1.100 kristaps 99: \&.TH PROGNAME 1 2009-10-10
1.22 kristaps 100: \&.SH NAME
1.124 schwarze 101: \efBprogname\efR \e(en one line about what it does
1.106 kristaps 102: \&.\e\(dq .SH LIBRARY
1.124 schwarze 103: \&.\e\(dq For sections 2, 3, and 9 only.
1.106 kristaps 104: \&.\e\(dq Not used in OpenBSD.
1.22 kristaps 105: \&.SH SYNOPSIS
1.124 schwarze 106: \efBprogname\efR [\efB\e-options\efR] \efIfile ...\efR
1.22 kristaps 107: \&.SH DESCRIPTION
1.124 schwarze 108: The \efBfoo\efR utility processes files ...
1.126 schwarze 109: \&.\e\(dq .Sh CONTEXT
110: \&.\e\(dq For section 9 functions only.
1.106 kristaps 111: \&.\e\(dq .SH IMPLEMENTATION NOTES
112: \&.\e\(dq Not used in OpenBSD.
113: \&.\e\(dq .SH RETURN VALUES
1.124 schwarze 114: \&.\e\(dq For sections 2, 3, and 9 function return values only.
1.106 kristaps 115: \&.\e\(dq .SH ENVIRONMENT
1.124 schwarze 116: \&.\e\(dq For sections 1, 6, 7, and 8 only.
1.106 kristaps 117: \&.\e\(dq .SH FILES
118: \&.\e\(dq .SH EXIT STATUS
1.124 schwarze 119: \&.\e\(dq For sections 1, 6, and 8 only.
1.106 kristaps 120: \&.\e\(dq .SH EXAMPLES
121: \&.\e\(dq .SH DIAGNOSTICS
1.124 schwarze 122: \&.\e\(dq For sections 1, 4, 6, 7, 8, and 9 printf/stderr messages only.
1.106 kristaps 123: \&.\e\(dq .SH ERRORS
1.124 schwarze 124: \&.\e\(dq For sections 2, 3, 4, and 9 errno settings only.
1.106 kristaps 125: \&.\e\(dq .SH SEE ALSO
1.124 schwarze 126: \&.\e\(dq .BR foobar ( 1 )
1.106 kristaps 127: \&.\e\(dq .SH STANDARDS
128: \&.\e\(dq .SH HISTORY
129: \&.\e\(dq .SH AUTHORS
130: \&.\e\(dq .SH CAVEATS
131: \&.\e\(dq .SH BUGS
132: \&.\e\(dq .SH SECURITY CONSIDERATIONS
133: \&.\e\(dq Not used in OpenBSD.
1.32 kristaps 134: .Ed
1.41 kristaps 135: .Pp
136: The sections in a
137: .Nm
1.68 kristaps 138: document are conventionally ordered as they appear above.
139: Sections should be composed as follows:
1.42 kristaps 140: .Bl -ohang -offset indent
141: .It Em NAME
1.68 kristaps 142: The name(s) and a short description of the documented material.
143: The syntax for this is generally as follows:
1.41 kristaps 144: .Pp
145: .D1 \efBname\efR \e(en description
1.42 kristaps 146: .It Em LIBRARY
1.41 kristaps 147: The name of the library containing the documented material, which is
1.68 kristaps 148: assumed to be a function in a section 2 or 3 manual.
149: For functions in the C library, this may be as follows:
1.41 kristaps 150: .Pp
151: .D1 Standard C Library (libc, -lc)
1.42 kristaps 152: .It Em SYNOPSIS
1.41 kristaps 153: Documents the utility invocation syntax, function call syntax, or device
1.55 kristaps 154: configuration.
1.41 kristaps 155: .Pp
156: For the first, utilities (sections 1, 6, and 8), this is
157: generally structured as follows:
158: .Pp
159: .D1 \efBname\efR [-\efBab\efR] [-\efBc\efR\efIarg\efR] \efBpath\efR...
160: .Pp
161: For the second, function calls (sections 2, 3, 9):
162: .Pp
1.44 kristaps 163: .D1 \&.B char *name(char *\efIarg\efR);
1.41 kristaps 164: .Pp
165: And for the third, configurations (section 4):
166: .Pp
1.44 kristaps 167: .D1 \&.B name* at cardbus ? function ?
1.41 kristaps 168: .Pp
1.55 kristaps 169: Manuals not in these sections generally don't need a
1.42 kristaps 170: .Em SYNOPSIS .
171: .It Em DESCRIPTION
1.55 kristaps 172: This expands upon the brief, one-line description in
1.42 kristaps 173: .Em NAME .
174: It usually contains a break-down of the options (if documenting a
175: command).
1.126 schwarze 176: .It Em CONTEXT
177: This section lists the contexts in which functions can be called in section 9.
178: The contexts are autoconf, process, or interrupt.
1.42 kristaps 179: .It Em IMPLEMENTATION NOTES
1.68 kristaps 180: Implementation-specific notes should be kept here.
181: This is useful when implementing standard functions that may have side
182: effects or notable algorithmic implications.
1.42 kristaps 183: .It Em RETURN VALUES
1.80 kristaps 184: This section documents the return values of functions in sections 2, 3, and 9.
1.42 kristaps 185: .It Em ENVIRONMENT
186: Documents any usages of environment variables, e.g.,
187: .Xr environ 7 .
188: .It Em FILES
1.68 kristaps 189: Documents files used.
1.78 schwarze 190: It's helpful to document both the file name and a short description of how
1.68 kristaps 191: the file is used (created, modified, etc.).
1.67 kristaps 192: .It Em EXIT STATUS
1.80 kristaps 193: This section documents the command exit status for
194: section 1, 6, and 8 utilities.
1.68 kristaps 195: Historically, this information was described in
1.67 kristaps 196: .Em DIAGNOSTICS ,
197: a practise that is now discouraged.
1.42 kristaps 198: .It Em EXAMPLES
1.68 kristaps 199: Example usages.
200: This often contains snippets of well-formed,
201: well-tested invocations.
1.80 kristaps 202: Make sure that examples work properly!
1.42 kristaps 203: .It Em DIAGNOSTICS
1.68 kristaps 204: Documents error conditions.
1.124 schwarze 205: In section 4 and 9 manuals, these are usually messages
206: printed by the kernel to the console and to the kernel log.
207: In section 1, 6, 7, and 8, these are usually messages
208: printed by userland programs to the standard error output.
209: .Pp
1.42 kristaps 210: Historically, this section was used in place of
211: .Em EXIT STATUS
212: for manuals in sections 1, 6, and 8; however, this practise is
213: discouraged.
214: .It Em ERRORS
1.124 schwarze 215: Documents
216: .Xr errno 2
217: settings in sections 2, 3, 4, and 9.
1.42 kristaps 218: .It Em SEE ALSO
1.68 kristaps 219: References other manuals with related topics.
220: This section should exist for most manuals.
1.44 kristaps 221: .Pp
222: .D1 \&.BR bar \&( 1 \&),
223: .Pp
224: Cross-references should conventionally be ordered
1.42 kristaps 225: first by section, then alphabetically.
226: .It Em STANDARDS
227: References any standards implemented or used, such as
228: .Pp
229: .D1 IEEE Std 1003.2 (\e(lqPOSIX.2\e(rq)
230: .Pp
231: If not adhering to any standards, the
232: .Em HISTORY
233: section should be used.
234: .It Em HISTORY
1.81 schwarze 235: A brief history of the subject, including where support first appeared.
1.42 kristaps 236: .It Em AUTHORS
1.81 schwarze 237: Credits to the person or persons who wrote the code and/or documentation.
1.78 schwarze 238: Authors should generally be noted by both name and email address.
1.42 kristaps 239: .It Em CAVEATS
1.78 schwarze 240: Common misuses and misunderstandings should be explained
1.42 kristaps 241: in this section.
242: .It Em BUGS
1.80 kristaps 243: Known bugs, limitations, and work-arounds should be described
1.78 schwarze 244: in this section.
1.42 kristaps 245: .It Em SECURITY CONSIDERATIONS
246: Documents any security precautions that operators should consider.
1.41 kristaps 247: .El
1.110 schwarze 248: .Sh MACRO OVERVIEW
249: This overview is sorted such that macros of similar purpose are listed
250: together, to help find the best macro for any given purpose.
251: Deprecated macros are not included in the overview, but can be found
252: in the alphabetical reference below.
253: .Ss Page header and footer meta-data
254: .Bl -column "PP, LP, P" description
255: .It Sx TH Ta set the title: Ar title section date Op Ar source Op Ar volume
256: .It Sx AT Ta display AT&T UNIX version in the page footer (<= 1 argument)
257: .It Sx UC Ta display BSD version in the page footer (<= 1 argument)
258: .El
259: .Ss Sections and paragraphs
260: .Bl -column "PP, LP, P" description
261: .It Sx SH Ta section header (one line)
262: .It Sx SS Ta subsection header (one line)
263: .It Sx PP , LP , P Ta start an undecorated paragraph (no arguments)
264: .It Sx RS , RE Ta reset the left margin: Op Ar width
265: .It Sx IP Ta indented paragraph: Op Ar head Op Ar width
266: .It Sx TP Ta tagged paragraph: Op Ar width
267: .It Sx HP Ta hanged paragraph: Op Ar width
1.118 schwarze 268: .It Sx PD Ta set vertical paragraph distance: Op Ar height
1.110 schwarze 269: .It Sx fi , nf Ta fill mode and no-fill mode (no arguments)
270: .It Sx in Ta additional indent: Op Ar width
271: .El
272: .Ss Physical markup
273: .Bl -column "PP, LP, P" description
274: .It Sx B Ta boldface font
275: .It Sx I Ta italic font
276: .It Sx R Ta roman (default) font
277: .It Sx SB Ta small boldface font
278: .It Sx SM Ta small roman font
279: .It Sx BI Ta alternate between boldface and italic fonts
280: .It Sx BR Ta alternate between boldface and roman fonts
281: .It Sx IB Ta alternate between italic and boldface fonts
282: .It Sx IR Ta alternate between italic and roman fonts
283: .It Sx RB Ta alternate between roman and boldface fonts
284: .It Sx RI Ta alternate between roman and italic fonts
285: .El
1.111 schwarze 286: .Sh MACRO REFERENCE
1.22 kristaps 287: This section is a canonical reference to all macros, arranged
1.68 kristaps 288: alphabetically.
289: For the scoping of individual macros, see
1.32 kristaps 290: .Sx MACRO SYNTAX .
1.72 joerg 291: .Ss \&AT
292: Sets the volume for the footer for compatibility with man pages from
1.123 schwarze 293: .At
1.72 joerg 294: releases.
295: The optional arguments specify which release it is from.
1.39 kristaps 296: .Ss \&B
1.22 kristaps 297: Text is rendered in bold face.
1.44 kristaps 298: .Pp
299: See also
1.92 kristaps 300: .Sx \&I
1.44 kristaps 301: and
1.92 kristaps 302: .Sx \&R .
1.39 kristaps 303: .Ss \&BI
1.68 kristaps 304: Text is rendered alternately in bold face and italic.
305: Thus,
1.32 kristaps 306: .Sq .BI this word and that
1.22 kristaps 307: causes
1.32 kristaps 308: .Sq this
1.22 kristaps 309: and
1.32 kristaps 310: .Sq and
1.55 kristaps 311: to render in bold face, while
1.32 kristaps 312: .Sq word
1.22 kristaps 313: and
1.32 kristaps 314: .Sq that
1.68 kristaps 315: render in italics.
316: Whitespace between arguments is omitted in output.
1.44 kristaps 317: .Pp
318: Examples:
1.46 kristaps 319: .Pp
1.93 kristaps 320: .Dl \&.BI bold italic bold italic
1.44 kristaps 321: .Pp
322: The output of this example will be emboldened
323: .Dq bold
324: and italicised
325: .Dq italic ,
326: with spaces stripped between arguments.
327: .Pp
328: See also
329: .Sx \&IB ,
330: .Sx \&BR ,
331: .Sx \&RB ,
332: .Sx \&RI ,
333: and
334: .Sx \&IR .
1.39 kristaps 335: .Ss \&BR
1.22 kristaps 336: Text is rendered alternately in bold face and roman (the default font).
337: Whitespace between arguments is omitted in output.
1.44 kristaps 338: .Pp
339: See
340: .Sx \&BI
341: for an equivalent example.
342: .Pp
343: See also
344: .Sx \&BI ,
345: .Sx \&IB ,
346: .Sx \&RB ,
347: .Sx \&RI ,
348: and
349: .Sx \&IR .
1.39 kristaps 350: .Ss \&DT
1.135 ! schwarze 351: Restore the default tabulator positions.
! 352: They are at intervals of 0.5 inches.
! 353: This has no effect unless the tabulator positions were changed with the
! 354: .Xr roff 7
! 355: .Ic \&ta
! 356: request.
1.116 schwarze 357: .Ss \&EE
358: This is a non-standard GNU extension, included only for compatibility.
359: In
360: .Xr mandoc 1 ,
361: it does the same as
362: .Sx \&fi .
363: .Ss \&EX
364: This is a non-standard GNU extension, included only for compatibility.
365: In
366: .Xr mandoc 1 ,
367: it does the same as
368: .Sx \&nf .
1.39 kristaps 369: .Ss \&HP
1.23 kristaps 370: Begin a paragraph whose initial output line is left-justified, but
1.27 kristaps 371: subsequent output lines are indented, with the following syntax:
1.44 kristaps 372: .Bd -filled -offset indent
373: .Pf \. Sx \&HP
1.130 schwarze 374: .Op Ar width
1.32 kristaps 375: .Ed
1.44 kristaps 376: .Pp
377: The
1.130 schwarze 378: .Ar width
1.117 schwarze 379: argument is a
380: .Xr roff 7
381: scaling width.
1.44 kristaps 382: If specified, it's saved for later paragraph left-margins; if unspecified, the
383: saved or default width is used.
384: .Pp
385: See also
1.45 kristaps 386: .Sx \&IP ,
387: .Sx \&LP ,
388: .Sx \&P ,
389: .Sx \&PP ,
1.44 kristaps 390: and
1.45 kristaps 391: .Sx \&TP .
1.39 kristaps 392: .Ss \&I
1.22 kristaps 393: Text is rendered in italics.
1.44 kristaps 394: .Pp
395: See also
1.92 kristaps 396: .Sx \&B
1.44 kristaps 397: and
1.92 kristaps 398: .Sx \&R .
1.39 kristaps 399: .Ss \&IB
1.80 kristaps 400: Text is rendered alternately in italics and bold face.
401: Whitespace between arguments is omitted in output.
1.44 kristaps 402: .Pp
403: See
404: .Sx \&BI
405: for an equivalent example.
406: .Pp
407: See also
408: .Sx \&BI ,
409: .Sx \&BR ,
410: .Sx \&RB ,
411: .Sx \&RI ,
412: and
413: .Sx \&IR .
1.39 kristaps 414: .Ss \&IP
1.44 kristaps 415: Begin an indented paragraph with the following syntax:
416: .Bd -filled -offset indent
417: .Pf \. Sx \&IP
1.130 schwarze 418: .Op Ar head Op Ar width
1.32 kristaps 419: .Ed
1.44 kristaps 420: .Pp
421: The
1.130 schwarze 422: .Ar width
1.117 schwarze 423: argument is a
424: .Xr roff 7
425: scaling width defining the left margin.
1.44 kristaps 426: It's saved for later paragraph left-margins; if unspecified, the saved or
427: default width is used.
428: .Pp
429: The
1.130 schwarze 430: .Ar head
1.68 kristaps 431: argument is used as a leading term, flushed to the left margin.
432: This is useful for bulleted paragraphs and so on.
1.44 kristaps 433: .Pp
434: See also
1.45 kristaps 435: .Sx \&HP ,
436: .Sx \&LP ,
437: .Sx \&P ,
438: .Sx \&PP ,
1.44 kristaps 439: and
1.45 kristaps 440: .Sx \&TP .
1.39 kristaps 441: .Ss \&IR
1.22 kristaps 442: Text is rendered alternately in italics and roman (the default font).
443: Whitespace between arguments is omitted in output.
1.44 kristaps 444: .Pp
445: See
446: .Sx \&BI
447: for an equivalent example.
448: .Pp
449: See also
450: .Sx \&BI ,
451: .Sx \&IB ,
452: .Sx \&BR ,
453: .Sx \&RB ,
454: and
455: .Sx \&RI .
1.39 kristaps 456: .Ss \&LP
1.68 kristaps 457: Begin an undecorated paragraph.
458: The scope of a paragraph is closed by a subsequent paragraph,
459: sub-section, section, or end of file.
1.78 schwarze 460: The saved paragraph left-margin width is reset to the default.
1.44 kristaps 461: .Pp
462: See also
1.45 kristaps 463: .Sx \&HP ,
464: .Sx \&IP ,
465: .Sx \&P ,
466: .Sx \&PP ,
1.44 kristaps 467: and
1.45 kristaps 468: .Sx \&TP .
1.113 kristaps 469: .Ss \&OP
470: Optional command-line argument.
1.114 schwarze 471: This is a non-standard GNU extension, included only for compatibility.
472: It has the following syntax:
1.113 kristaps 473: .Bd -filled -offset indent
474: .Pf \. Sx \&OP
1.130 schwarze 475: .Ar key Op Ar value
1.113 kristaps 476: .Ed
477: .Pp
478: The
1.130 schwarze 479: .Ar key
1.113 kristaps 480: is usually a command-line flag and
1.130 schwarze 481: .Ar value
1.113 kristaps 482: its argument.
1.39 kristaps 483: .Ss \&P
484: Synonym for
485: .Sx \&LP .
1.44 kristaps 486: .Pp
487: See also
1.45 kristaps 488: .Sx \&HP ,
489: .Sx \&IP ,
490: .Sx \&LP ,
491: .Sx \&PP ,
1.118 schwarze 492: and
493: .Sx \&TP .
494: .Ss \&PD
495: Specify the vertical space to be inserted before each new paragraph.
496: .br
497: The syntax is as follows:
498: .Bd -filled -offset indent
499: .Pf \. Sx \&PD
1.130 schwarze 500: .Op Ar height
1.118 schwarze 501: .Ed
502: .Pp
503: The
1.130 schwarze 504: .Ar height
1.118 schwarze 505: argument is a
506: .Xr roff 7
507: scaling width.
508: It defaults to
509: .Cm 1v .
510: If the unit is omitted,
511: .Cm v
512: is assumed.
513: .Pp
514: This macro affects the spacing before any subsequent instances of
515: .Sx \&HP ,
516: .Sx \&IP ,
517: .Sx \&LP ,
518: .Sx \&P ,
519: .Sx \&PP ,
520: .Sx \&SH ,
521: .Sx \&SS ,
1.44 kristaps 522: and
1.45 kristaps 523: .Sx \&TP .
1.39 kristaps 524: .Ss \&PP
525: Synonym for
526: .Sx \&LP .
1.44 kristaps 527: .Pp
528: See also
1.45 kristaps 529: .Sx \&HP ,
530: .Sx \&IP ,
531: .Sx \&LP ,
532: .Sx \&P ,
1.44 kristaps 533: and
1.45 kristaps 534: .Sx \&TP .
1.39 kristaps 535: .Ss \&R
1.22 kristaps 536: Text is rendered in roman (the default font).
1.44 kristaps 537: .Pp
538: See also
1.92 kristaps 539: .Sx \&I
1.44 kristaps 540: and
1.92 kristaps 541: .Sx \&B .
1.39 kristaps 542: .Ss \&RB
1.22 kristaps 543: Text is rendered alternately in roman (the default font) and bold face.
544: Whitespace between arguments is omitted in output.
1.44 kristaps 545: .Pp
546: See
547: .Sx \&BI
548: for an equivalent example.
549: .Pp
550: See also
551: .Sx \&BI ,
552: .Sx \&IB ,
553: .Sx \&BR ,
554: .Sx \&RI ,
555: and
556: .Sx \&IR .
1.39 kristaps 557: .Ss \&RE
1.30 kristaps 558: Explicitly close out the scope of a prior
1.39 kristaps 559: .Sx \&RS .
1.129 schwarze 560: The default left margin is restored to the state before that
1.102 kristaps 561: .Sx \&RS
562: invocation.
1.129 schwarze 563: .Pp
564: The syntax is as follows:
565: .Bd -filled -offset indent
566: .Pf \. Sx \&RE
567: .Op Ar level
568: .Ed
569: .Pp
570: Without an argument, the most recent
571: .Sx \&RS
572: block is closed out.
573: If
574: .Ar level
575: is 1, all open
576: .Sx \&RS
577: blocks are closed out.
578: Otherwise,
579: .Ar level No \(mi 1
580: nested
581: .Sx \&RS
582: blocks remain open.
1.39 kristaps 583: .Ss \&RI
1.22 kristaps 584: Text is rendered alternately in roman (the default font) and italics.
585: Whitespace between arguments is omitted in output.
1.44 kristaps 586: .Pp
587: See
588: .Sx \&BI
589: for an equivalent example.
590: .Pp
591: See also
592: .Sx \&BI ,
593: .Sx \&IB ,
594: .Sx \&BR ,
595: .Sx \&RB ,
596: and
597: .Sx \&IR .
1.39 kristaps 598: .Ss \&RS
1.102 kristaps 599: Temporarily reset the default left margin.
1.44 kristaps 600: This has the following syntax:
601: .Bd -filled -offset indent
1.102 kristaps 602: .Pf \. Sx \&RS
1.130 schwarze 603: .Op Ar width
1.32 kristaps 604: .Ed
1.44 kristaps 605: .Pp
606: The
1.130 schwarze 607: .Ar width
1.117 schwarze 608: argument is a
609: .Xr roff 7
610: scaling width.
1.55 kristaps 611: If not specified, the saved or default width is used.
1.102 kristaps 612: .Pp
613: See also
614: .Sx \&RE .
1.39 kristaps 615: .Ss \&SB
1.22 kristaps 616: Text is rendered in small size (one point smaller than the default font)
617: bold face.
1.39 kristaps 618: .Ss \&SH
1.68 kristaps 619: Begin a section.
620: The scope of a section is only closed by another section or the end of
621: file.
1.78 schwarze 622: The paragraph left-margin width is reset to the default.
1.39 kristaps 623: .Ss \&SM
1.22 kristaps 624: Text is rendered in small size (one point smaller than the default
625: font).
1.39 kristaps 626: .Ss \&SS
1.68 kristaps 627: Begin a sub-section.
628: The scope of a sub-section is closed by a subsequent sub-section,
629: section, or end of file.
1.78 schwarze 630: The paragraph left-margin width is reset to the default.
1.39 kristaps 631: .Ss \&TH
1.128 schwarze 632: Sets the title of the manual page for use in the page header
633: and footer with the following syntax:
1.44 kristaps 634: .Bd -filled -offset indent
635: .Pf \. Sx \&TH
1.99 schwarze 636: .Ar title section date
637: .Op Ar source Op Ar volume
1.44 kristaps 638: .Ed
1.43 kristaps 639: .Pp
1.99 schwarze 640: Conventionally, the document
641: .Ar title
642: is given in all caps.
643: The recommended
644: .Ar date
645: format is
646: .Sy YYYY-MM-DD
647: as specified in the ISO-8601 standard;
648: if the argument does not conform, it is printed verbatim.
649: If the
650: .Ar date
651: is empty or not specified, the current date is used.
652: The optional
653: .Ar source
1.68 kristaps 654: string specifies the organisation providing the utility.
1.128 schwarze 655: When unspecified,
656: .Xr mandoc 1
657: uses its
658: .Fl Ios
659: argument.
1.68 kristaps 660: The
1.99 schwarze 661: .Ar volume
1.43 kristaps 662: string replaces the default rendered volume, which is dictated by the
663: manual section.
664: .Pp
665: Examples:
1.46 kristaps 666: .Pp
1.93 kristaps 667: .Dl \&.TH CVS 5 "1992-02-12" GNU
1.39 kristaps 668: .Ss \&TP
1.25 kristaps 669: Begin a paragraph where the head, if exceeding the indentation width, is
1.24 kristaps 670: followed by a newline; if not, the body follows on the same line after a
1.68 kristaps 671: buffer to the indentation width.
672: Subsequent output lines are indented.
1.44 kristaps 673: The syntax is as follows:
674: .Bd -filled -offset indent
675: .Pf \. Sx \&TP
1.130 schwarze 676: .Op Ar width
1.32 kristaps 677: .Ed
678: .Pp
1.44 kristaps 679: The
1.130 schwarze 680: .Ar width
1.117 schwarze 681: argument is a
682: .Xr roff 7
683: scaling width.
1.44 kristaps 684: If specified, it's saved for later paragraph left-margins; if
1.27 kristaps 685: unspecified, the saved or default width is used.
1.44 kristaps 686: .Pp
687: See also
1.45 kristaps 688: .Sx \&HP ,
689: .Sx \&IP ,
690: .Sx \&LP ,
691: .Sx \&P ,
1.44 kristaps 692: and
1.45 kristaps 693: .Sx \&PP .
1.72 joerg 694: .Ss \&UC
695: Sets the volume for the footer for compatibility with man pages from
1.120 schwarze 696: .Bx
697: releases.
1.72 joerg 698: The optional first argument specifies which release it is from.
1.121 schwarze 699: .Ss \&UE
700: End a uniform resource identifier block.
701: This is a non-standard GNU extension, included only for compatibility.
702: See
703: .Sx \&UE .
704: .Ss \&UR
705: Begin a uniform resource identifier block.
706: This is a non-standard GNU extension, included only for compatibility.
707: It has the following syntax:
708: .Bd -literal -offset indent
709: .Pf \. Sx \&UR Ar uri
710: link description to be shown
711: .Pf \. Sx UE
712: .Ed
1.39 kristaps 713: .Ss \&fi
1.22 kristaps 714: End literal mode begun by
1.39 kristaps 715: .Sx \&nf .
1.79 kristaps 716: .Ss \&in
717: Indent relative to the current indentation:
718: .Pp
1.130 schwarze 719: .D1 Pf \. Sx \&in Op Ar width
1.79 kristaps 720: .Pp
721: If
1.130 schwarze 722: .Ar width
1.79 kristaps 723: is signed, the new offset is relative.
724: Otherwise, it is absolute.
725: This value is reset upon the next paragraph, section, or sub-section.
1.39 kristaps 726: .Ss \&nf
1.22 kristaps 727: Begin literal mode: all subsequent free-form lines have their end of
1.68 kristaps 728: line boundaries preserved.
729: May be ended by
1.39 kristaps 730: .Sx \&fi .
1.101 kristaps 731: Literal mode is implicitly ended by
732: .Sx \&SH
733: or
734: .Sx \&SS .
1.111 schwarze 735: .Sh MACRO SYNTAX
736: The
737: .Nm
738: macros are classified by scope: line scope or block scope.
739: Line macros are only scoped to the current line (and, in some
740: situations, the subsequent line).
741: Block macros are scoped to the current line and subsequent lines until
742: closed by another block macro.
743: .Ss Line Macros
744: Line macros are generally scoped to the current line, with the body
745: consisting of zero or more arguments.
746: If a macro is scoped to the next line and the line arguments are empty,
747: the next line, which must be text, is used instead.
748: Thus:
749: .Bd -literal -offset indent
750: \&.I
751: foo
752: .Ed
753: .Pp
754: is equivalent to
755: .Sq \&.I foo .
756: If next-line macros are invoked consecutively, only the last is used.
757: If a next-line macro is followed by a non-next-line macro, an error is
1.134 schwarze 758: raised.
1.111 schwarze 759: .Pp
760: The syntax is as follows:
761: .Bd -literal -offset indent
762: \&.YO \(lBbody...\(rB
763: \(lBbody...\(rB
764: .Ed
765: .Bl -column "MacroX" "ArgumentsX" "ScopeXXXXX" "CompatX" -offset indent
766: .It Em Macro Ta Em Arguments Ta Em Scope Ta Em Notes
767: .It Sx \&AT Ta <=1 Ta current Ta \&
768: .It Sx \&B Ta n Ta next-line Ta \&
769: .It Sx \&BI Ta n Ta current Ta \&
770: .It Sx \&BR Ta n Ta current Ta \&
771: .It Sx \&DT Ta 0 Ta current Ta \&
1.121 schwarze 772: .It Sx \&EE Ta 0 Ta current Ta compat
773: .It Sx \&EX Ta 0 Ta current Ta compat
1.111 schwarze 774: .It Sx \&I Ta n Ta next-line Ta \&
775: .It Sx \&IB Ta n Ta current Ta \&
776: .It Sx \&IR Ta n Ta current Ta \&
1.113 kristaps 777: .It Sx \&OP Ta 0, 1 Ta current Ta compat
1.121 schwarze 778: .It Sx \&PD Ta 1 Ta current Ta \&
1.111 schwarze 779: .It Sx \&R Ta n Ta next-line Ta \&
780: .It Sx \&RB Ta n Ta current Ta \&
781: .It Sx \&RI Ta n Ta current Ta \&
782: .It Sx \&SB Ta n Ta next-line Ta \&
783: .It Sx \&SM Ta n Ta next-line Ta \&
784: .It Sx \&TH Ta >1, <6 Ta current Ta \&
785: .It Sx \&UC Ta <=1 Ta current Ta \&
786: .It Sx \&fi Ta 0 Ta current Ta compat
787: .It Sx \&in Ta 1 Ta current Ta compat
788: .It Sx \&nf Ta 0 Ta current Ta compat
789: .El
790: .Pp
791: Macros marked as
792: .Qq compat
793: are included for compatibility with the significant corpus of existing
794: manuals that mix dialects of roff.
795: These macros should not be used for portable
796: .Nm
797: manuals.
798: .Ss Block Macros
799: Block macros comprise a head and body.
800: As with in-line macros, the head is scoped to the current line and, in
801: one circumstance, the next line (the next-line stipulations as in
802: .Sx Line Macros
803: apply here as well).
804: .Pp
805: The syntax is as follows:
806: .Bd -literal -offset indent
807: \&.YO \(lBhead...\(rB
808: \(lBhead...\(rB
809: \(lBbody...\(rB
810: .Ed
811: .Pp
812: The closure of body scope may be to the section, where a macro is closed
813: by
814: .Sx \&SH ;
815: sub-section, closed by a section or
816: .Sx \&SS ;
817: part, closed by a section, sub-section, or
818: .Sx \&RE ;
819: or paragraph, closed by a section, sub-section, part,
820: .Sx \&HP ,
821: .Sx \&IP ,
822: .Sx \&LP ,
823: .Sx \&P ,
824: .Sx \&PP ,
825: or
826: .Sx \&TP .
827: No closure refers to an explicit block closing macro.
828: .Pp
829: As a rule, block macros may not be nested; thus, calling a block macro
830: while another block macro scope is open, and the open scope is not
831: implicitly closed, is syntactically incorrect.
832: .Bl -column "MacroX" "ArgumentsX" "Head ScopeX" "sub-sectionX" "compatX" -offset indent
833: .It Em Macro Ta Em Arguments Ta Em Head Scope Ta Em Body Scope Ta Em Notes
834: .It Sx \&HP Ta <2 Ta current Ta paragraph Ta \&
835: .It Sx \&IP Ta <3 Ta current Ta paragraph Ta \&
836: .It Sx \&LP Ta 0 Ta current Ta paragraph Ta \&
837: .It Sx \&P Ta 0 Ta current Ta paragraph Ta \&
838: .It Sx \&PP Ta 0 Ta current Ta paragraph Ta \&
839: .It Sx \&RE Ta 0 Ta current Ta none Ta compat
840: .It Sx \&RS Ta 1 Ta current Ta part Ta compat
841: .It Sx \&SH Ta >0 Ta next-line Ta section Ta \&
842: .It Sx \&SS Ta >0 Ta next-line Ta sub-section Ta \&
843: .It Sx \&TP Ta n Ta next-line Ta paragraph Ta \&
1.121 schwarze 844: .It Sx \&UE Ta 0 Ta current Ta none Ta compat
845: .It Sx \&UR Ta 1 Ta current Ta part Ta compat
1.111 schwarze 846: .El
847: .Pp
848: Macros marked
849: .Qq compat
850: are as mentioned in
851: .Sx Line Macros .
852: .Pp
853: If a block macro is next-line scoped, it may only be followed by in-line
854: macros for decorating text.
855: .Ss Font handling
856: In
857: .Nm
858: documents, both
859: .Sx Physical markup
860: macros and
861: .Xr roff 7
862: .Ql \ef
863: font escape sequences can be used to choose fonts.
864: In text lines, the effect of manual font selection by escape sequences
865: only lasts until the next macro invocation; in macro lines, it only lasts
866: until the end of the macro scope.
867: Note that macros like
868: .Sx \&BR
869: open and close a font scope for each argument.
1.1 kristaps 870: .Sh SEE ALSO
1.89 schwarze 871: .Xr man 1 ,
1.32 kristaps 872: .Xr mandoc 1 ,
1.98 kristaps 873: .Xr eqn 7 ,
1.89 schwarze 874: .Xr mandoc_char 7 ,
1.94 kristaps 875: .Xr mdoc 7 ,
876: .Xr roff 7 ,
877: .Xr tbl 7
1.78 schwarze 878: .Sh HISTORY
879: The
880: .Nm
881: language first appeared as a macro package for the roff typesetting
882: system in
883: .At v7 .
884: It was later rewritten by James Clark as a macro package for groff.
1.113 kristaps 885: Eric S. Raymond wrote the extended
886: .Nm
887: macros for groff in 2007.
1.78 schwarze 888: The stand-alone implementation that is part of the
889: .Xr mandoc 1
890: utility written by Kristaps Dzonsons appeared in
1.80 kristaps 891: .Ox 4.6 .
1.1 kristaps 892: .Sh AUTHORS
1.78 schwarze 893: This
1.32 kristaps 894: .Nm
1.23 kristaps 895: reference was written by
1.119 schwarze 896: .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv .
1.1 kristaps 897: .Sh CAVEATS
1.68 kristaps 898: Do not use this language.
899: Use
1.32 kristaps 900: .Xr mdoc 7 ,
1.1 kristaps 901: instead.
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