Annotation of src/usr.bin/mandoc/mdoc.7, Revision 1.27
1.27 ! schwarze 1: .\" $Id: mdoc.7,v 1.26 2010/05/14 01:54:37 schwarze Exp $
1.1 kristaps 2: .\"
1.26 schwarze 3: .\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 4: .\"
5: .\" Permission to use, copy, modify, and distribute this software for any
1.2 schwarze 6: .\" purpose with or without fee is hereby granted, provided that the above
7: .\" copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: .\"
1.2 schwarze 9: .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.9 schwarze 16: .\"
1.27 ! schwarze 17: .Dd $Mdocdate: May 14 2010 $
1.2 schwarze 18: .Dt MDOC 7
1.1 kristaps 19: .Os
20: .Sh NAME
1.15 schwarze 21: .Nm mdoc
22: .Nd mdoc language reference
1.1 kristaps 23: .Sh DESCRIPTION
24: The
1.15 schwarze 25: .Nm mdoc
1.9 schwarze 26: language is used to format
1.15 schwarze 27: .Bx
28: .Ux
1.8 schwarze 29: manuals. In this reference document, we describe its syntax, structure,
1.26 schwarze 30: and usage. Our reference implementation is mandoc; the
1.15 schwarze 31: .Sx COMPATIBILITY
1.26 schwarze 32: section describes compatibility with other troff \-mdoc implementations.
1.15 schwarze 33: .Pp
1.1 kristaps 34: An
1.15 schwarze 35: .Nm
1.1 kristaps 36: document follows simple rules: lines beginning with the control
1.9 schwarze 37: character
1.15 schwarze 38: .Sq \.
1.1 kristaps 39: are parsed for macros. Other lines are interpreted within the scope of
40: prior macros:
1.15 schwarze 41: .Bd -literal -offset indent
1.1 kristaps 42: \&.Sh Macro lines change control state.
43: Other lines are interpreted within the current state.
1.15 schwarze 44: .Ed
1.9 schwarze 45: .Sh LANGUAGE SYNTAX
1.15 schwarze 46: .Nm
1.1 kristaps 47: documents may contain only graphable 7-bit ASCII characters, the space
1.8 schwarze 48: character, and, in certain circumstances, the tab character. All
49: manuals must have
1.15 schwarze 50: .Ux
1.9 schwarze 51: line terminators.
1.15 schwarze 52: .Ss Comments
1.8 schwarze 53: Text following a
1.15 schwarze 54: .Sq \e" ,
1.8 schwarze 55: whether in a macro or free-form text line, is ignored to the end of
56: line. A macro line with only a control character and comment escape,
1.15 schwarze 57: .Sq \&.\e" ,
58: is also ignored. Macro lines with only a control charater and optionally
59: whitespace are stripped from input.
60: .Ss Reserved Characters
1.1 kristaps 61: Within a macro line, the following characters are reserved:
1.17 schwarze 62: .Pp
1.15 schwarze 63: .Bl -tag -width Ds -offset indent -compact
64: .It \&.
65: .Pq period
66: .It \&,
67: .Pq comma
68: .It \&:
69: .Pq colon
70: .It \&;
71: .Pq semicolon
72: .It \&(
73: .Pq left-parenthesis
74: .It \&)
75: .Pq right-parenthesis
76: .It \&[
77: .Pq left-bracket
78: .It \&]
79: .Pq right-bracket
80: .It \&?
81: .Pq question
82: .It \&!
83: .Pq exclamation
84: .It \&|
85: .Pq vertical bar
86: .El
87: .Pp
1.1 kristaps 88: Use of reserved characters is described in
1.15 schwarze 89: .Sx MACRO SYNTAX .
1.8 schwarze 90: For general use in macro lines, these characters must either be escaped
91: with a non-breaking space
1.15 schwarze 92: .Pq Sq \e&
1.9 schwarze 93: or, if applicable, an appropriate escape sequence used.
1.15 schwarze 94: .Ss Special Characters
1.8 schwarze 95: Special characters may occur in both macro and free-form lines.
96: Sequences begin with the escape character
1.15 schwarze 97: .Sq \e
1.9 schwarze 98: followed by either an open-parenthesis
1.15 schwarze 99: .Sq \&(
1.1 kristaps 100: for two-character sequences; an open-bracket
1.15 schwarze 101: .Sq \&[
1.1 kristaps 102: for n-character sequences (terminated at a close-bracket
1.15 schwarze 103: .Sq \&] ) ;
1.27 ! schwarze 104: or a single one-character sequence.
! 105: See
1.15 schwarze 106: .Xr mandoc_char 7
1.27 ! schwarze 107: for a complete list.
! 108: Examples include
1.15 schwarze 109: .Sq \e(em
110: .Pq em-dash
1.9 schwarze 111: and
1.15 schwarze 112: .Sq \ee
113: .Pq back-slash .
114: .Ss Text Decoration
1.13 schwarze 115: Terms may be text-decorated using the
1.15 schwarze 116: .Sq \ef
1.20 schwarze 117: escape followed by an indicator: B (bold), I, (italic), R (Roman), or P
1.22 schwarze 118: (revert to previous mode):
1.20 schwarze 119: .Pp
120: .D1 \efBbold\efR \efIitalic\efP
121: .Pp
122: A numerical representation 3, 2, or 1 (bold, italic, and Roman,
1.27 ! schwarze 123: respectively) may be used instead.
! 124: A text decoration is valid within
1.20 schwarze 125: the current font scope only: if a macro opens a font scope alongside
126: its own scope, such as
127: .Sx \&Bf
128: .Cm \&Sy ,
129: in-scope invocations of
130: .Sq \ef
1.27 ! schwarze 131: are only valid within the font scope of the macro.
! 132: If
1.20 schwarze 133: .Sq \ef
134: is specified outside of any font scope, such as in unenclosed, free-form
135: text, it will affect the remainder of the document.
136: .Pp
137: Text may also be sized with the
138: .Sq \es
139: escape, whose syntax is one of
140: .Sq \es+-n
141: for one-digit numerals;
142: .Sq \es(+-nn
143: or
144: .Sq \es+-(nn
145: for two-digit numerals; and
146: .Sq \es[+-N] ,
147: .Sq \es+-[N] ,
148: .Sq \es'+-N' ,
149: or
150: .Sq \es+-'N'
151: for arbitrary-digit numerals:
152: .Pp
153: .D1 \es+1bigger\es-1
154: .D1 \es[+10]much bigger\es[-10]
155: .D1 \es+(10much bigger\es-(10
156: .D1 \es+'100'much much bigger\es-'100'
157: .Pp
1.22 schwarze 158: Note these forms are
1.20 schwarze 159: .Em not
1.22 schwarze 160: recommended for
1.15 schwarze 161: .Nm ,
1.20 schwarze 162: which encourages semantic annotation.
1.15 schwarze 163: .Ss Predefined Strings
1.22 schwarze 164: Historically,
1.15 schwarze 165: .Xr groff 1
1.22 schwarze 166: also defined a set of package-specific
1.15 schwarze 167: .Dq predefined strings ,
1.22 schwarze 168: which, like
1.15 schwarze 169: .Sx Special Characters ,
1.13 schwarze 170: demark special output characters and strings by way of input codes.
171: Predefined strings are escaped with the slash-asterisk,
1.15 schwarze 172: .Sq \e* :
1.13 schwarze 173: single-character
1.15 schwarze 174: .Sq \e*X ,
1.13 schwarze 175: two-character
1.15 schwarze 176: .Sq \e*(XX ,
1.13 schwarze 177: and N-character
1.15 schwarze 178: .Sq \e*[N] .
1.13 schwarze 179: See
1.15 schwarze 180: .Xr mandoc_char 7
1.27 ! schwarze 181: for a complete list.
! 182: Examples include
1.15 schwarze 183: .Sq \e*(Am
184: .Pq ampersand
1.13 schwarze 185: and
1.15 schwarze 186: .Sq \e*(Ba
187: .Pq vertical bar .
188: .Ss Whitespace
1.26 schwarze 189: Whitespace consists of the space character.
190: In free-form lines, whitespace is preserved within a line; un-escaped
191: trailing spaces are stripped from input (unless in a literal context).
192: Blank free-form lines, which may include whitespace, are only permitted
193: within literal contexts.
1.15 schwarze 194: .Pp
1.27 ! schwarze 195: In macro lines, whitespace delimits arguments and is discarded.
! 196: If arguments are quoted, whitespace within the quotes is retained.
1.15 schwarze 197: .Ss Quotation
1.9 schwarze 198: Macro arguments may be quoted with a double-quote to group
1.27 ! schwarze 199: space-delimited terms or to retain blocks of whitespace.
! 200: A quoted argument begins with a double-quote preceded by whitespace.
! 201: The next double-quote not pair-wise adjacent to another double-quote
! 202: terminates the literal, regardless of surrounding whitespace.
1.15 schwarze 203: .Pp
1.9 schwarze 204: This produces tokens
1.15 schwarze 205: .Sq a" ,
206: .Sq b c ,
207: .Sq de ,
1.9 schwarze 208: and
1.15 schwarze 209: .Sq fg" .
1.9 schwarze 210: Note that any quoted term, be it argument or macro, is indiscriminately
1.27 ! schwarze 211: considered literal text.
! 212: Thus, the following produces
1.15 schwarze 213: .Sq \&Em a :
214: .Bd -literal -offset indent
1.9 schwarze 215: \&.Em "Em a"
1.15 schwarze 216: .Ed
217: .Pp
1.9 schwarze 218: In free-form mode, quotes are regarded as opaque text.
1.17 schwarze 219: .Ss Dates
220: There are several macros in
221: .Nm
1.27 ! schwarze 222: that require a date argument.
! 223: The canonical form for dates is the American format:
1.17 schwarze 224: .Pp
225: .D1 Cm Month Day , Year
226: .Pp
227: The
228: .Cm Day
1.27 ! schwarze 229: value is an optionally zero-padded numeral.
! 230: The
1.17 schwarze 231: .Cm Month
1.27 ! schwarze 232: value is the full month name.
! 233: The
1.17 schwarze 234: .Cm Year
235: value is the full four-digit year.
236: .Pp
1.19 schwarze 237: Reduced form dates are broken-down canonical form dates:
1.17 schwarze 238: .Pp
1.19 schwarze 239: .D1 Cm Month , Year
240: .D1 Cm Year
1.17 schwarze 241: .Pp
242: Some examples of valid dates follow:
243: .Pp
244: .D1 "May, 2009" Pq reduced form
245: .D1 "2009" Pq reduced form
246: .D1 "May 20, 2009" Pq canonical form
247: .Ss Scaling Widths
248: Many macros support scaled widths for their arguments, such as
249: stipulating a two-inch list indentation with the following:
250: .Bd -literal -offset indent
251: \&.Bl -tag -width 2i
252: .Ed
253: .Pp
254: The syntax for scaled widths is
255: .Sq Li [+-]?[0-9]*.[0-9]*[:unit:] ,
256: where a decimal must be preceded or proceeded by at least one digit.
1.27 ! schwarze 257: Negative numbers, while accepted, are truncated to zero.
! 258: The following scaling units are accepted:
1.17 schwarze 259: .Pp
260: .Bl -tag -width Ds -offset indent -compact
261: .It c
262: centimetre
263: .It i
264: inch
265: .It P
266: pica (~1/6 inch)
267: .It p
268: point (~1/72 inch)
269: .It f
270: synonym for
271: .Sq u
272: .It v
273: default vertical span
274: .It m
275: width of rendered
276: .Sq m
277: .Pq em
278: character
279: .It n
280: width of rendered
281: .Sq n
282: .Pq en
283: character
284: .It u
285: default horizontal span
286: .It M
287: mini-em (~1/100 em)
288: .El
289: .Pp
290: Using anything other than
291: .Sq m ,
292: .Sq n ,
293: .Sq u ,
294: or
295: .Sq v
1.27 ! schwarze 296: is necessarily non-portable across output media.
! 297: See
1.17 schwarze 298: .Sx COMPATIBILITY .
1.8 schwarze 299: .Sh MANUAL STRUCTURE
1.17 schwarze 300: A well-formed
1.15 schwarze 301: .Nm
1.17 schwarze 302: document consists of a document prologue followed by one or more
303: sections.
304: .Pp
305: The prologue, which consists of (in order) the
306: .Sx \&Dd ,
307: .Sx \&Dt ,
308: and
309: .Sx \&Os
310: macros, is required for every document.
311: .Pp
1.22 schwarze 312: The first section (sections are denoted by
1.17 schwarze 313: .Sx \&Sh )
314: must be the NAME section, consisting of at least one
315: .Sx \&Nm
1.9 schwarze 316: followed by
1.17 schwarze 317: .Sx \&Nd .
318: .Pp
319: Following that, convention dictates specifying at least the SYNOPSIS and
320: DESCRIPTION sections, although this varies between manual sections.
321: .Pp
322: The following is a well-formed skeleton
323: .Nm
324: file:
1.15 schwarze 325: .Bd -literal -offset indent
1.8 schwarze 326: \&.Dd $\&Mdocdate$
327: \&.Dt mdoc 7
328: \&.Os
1.15 schwarze 329: \&.
1.8 schwarze 330: \&.Sh NAME
1.15 schwarze 331: \&.Nm foo
332: \&.Nd a description goes here
333: \&.\e\*q The next is for sections 2 & 3 only.
334: \&.\e\*q .Sh LIBRARY
335: \&.
336: \&.Sh SYNOPSIS
337: \&.Nm foo
338: \&.Op Fl options
339: \&.Ar
340: \&.
341: \&.Sh DESCRIPTION
342: The
343: \&.Nm
344: utility processes files ...
345: \&.\e\*q .Sh IMPLEMENTATION NOTES
346: \&.\e\*q The next is for sections 2, 3, & 9 only.
347: \&.\e\*q .Sh RETURN VALUES
348: \&.\e\*q The next is for sections 1, 6, 7, & 8 only.
349: \&.\e\*q .Sh ENVIRONMENT
350: \&.\e\*q .Sh FILES
1.27 ! schwarze 351: \&.\e\*q The next is for sections 1 & 8 only.
! 352: \&.\e\*q .Sh EXIT STATUS
1.15 schwarze 353: \&.\e\*q .Sh EXAMPLES
354: \&.\e\*q The next is for sections 1, 4, 6, 7, & 8 only.
355: \&.\e\*q .Sh DIAGNOSTICS
356: \&.\e\*q The next is for sections 2, 3, & 9 only.
357: \&.\e\*q .Sh ERRORS
358: \&.\e\*q .Sh SEE ALSO
359: \&.\e\*q .Xr foobar 1
360: \&.\e\*q .Sh STANDARDS
361: \&.\e\*q .Sh HISTORY
362: \&.\e\*q .Sh AUTHORS
363: \&.\e\*q .Sh CAVEATS
364: \&.\e\*q .Sh BUGS
365: \&.\e\*q .Sh SECURITY CONSIDERATIONS
366: .Ed
367: .Pp
1.17 schwarze 368: The sections in a
369: .Nm
1.27 ! schwarze 370: document are conventionally ordered as they appear above.
! 371: Sections should be composed as follows:
1.19 schwarze 372: .Bl -ohang -offset Ds
373: .It Em NAME
1.27 ! schwarze 374: The name(s) and a short description of the documented material.
! 375: The syntax for this as follows:
1.19 schwarze 376: .Bd -literal -offset indent
377: \&.Nm name0
378: \&.Nm name1
379: \&.Nm name2
380: \&.Nd a short description
381: .Ed
382: .Pp
383: The
1.17 schwarze 384: .Sx \&Nm
1.19 schwarze 385: macro(s) must precede the
386: .Sx \&Nd
387: macro.
1.21 schwarze 388: .Pp
1.22 schwarze 389: See
1.21 schwarze 390: .Sx \&Nm
391: and
392: .Sx \&Nd .
1.19 schwarze 393: .It Em LIBRARY
394: The name of the library containing the documented material, which is
1.27 ! schwarze 395: assumed to be a function in a section 2 or 3 manual.
! 396: The syntax for this is as follows:
1.19 schwarze 397: .Bd -literal -offset indent
398: \&.Lb libarm
399: .Ed
400: .Pp
401: See
1.21 schwarze 402: .Sx \&Lb .
1.19 schwarze 403: .It Em SYNOPSIS
404: Documents the utility invocation syntax, function call syntax, or device
1.22 schwarze 405: configuration.
1.19 schwarze 406: .Pp
407: For the first, utilities (sections 1, 6, and 8), this is
408: generally structured as follows:
409: .Bd -literal -offset indent
410: \&.Nm foo
411: \&.Op Fl v
412: \&.Op Fl o Ar file
413: \&.Op Ar
414: \&.Nm bar
415: \&.Op Fl v
416: \&.Op Fl o Ar file
417: \&.Op Ar
418: .Ed
419: .Pp
420: For the second, function calls (sections 2, 3, 9):
421: .Bd -literal -offset indent
422: \&.Vt extern const char *global;
423: \&.In header.h
424: \&.Ft "char *"
425: \&.Fn foo "const char *src"
426: \&.Ft "char *"
427: \&.Fn bar "const char *src"
428: .Ed
429: .Pp
430: And for the third, configurations (section 4):
431: .Bd -literal -offset indent
432: \&.Cd \*qit* at isa? port 0x2e\*q
433: \&.Cd \*qit* at isa? port 0x4e\*q
434: .Ed
435: .Pp
1.22 schwarze 436: Manuals not in these sections generally don't need a
1.19 schwarze 437: .Em SYNOPSIS .
1.21 schwarze 438: .Pp
1.22 schwarze 439: See
1.21 schwarze 440: .Sx \&Op ,
441: .Sx \&Cd ,
442: .Sx \&Fn ,
443: .Sx \&Ft ,
444: and
445: .Sx \&Vt .
1.19 schwarze 446: .It Em DESCRIPTION
1.22 schwarze 447: This expands upon the brief, one-line description in
1.19 schwarze 448: .Em NAME .
449: It usually contains a break-down of the options (if documenting a
450: command), such as:
451: .Bd -literal -offset indent
452: The arguments are as follows:
453: \&.Bl \-tag \-width Ds
454: \&.It Fl v
455: Print verbose information.
456: \&.El
457: .Ed
1.21 schwarze 458: .Pp
1.19 schwarze 459: Manuals not documenting a command won't include the above fragment.
460: .It Em IMPLEMENTATION NOTES
1.27 ! schwarze 461: Implementation-specific notes should be kept here.
! 462: This is useful when implementing standard functions that may have side
! 463: effects or notable algorithmic implications.
1.19 schwarze 464: .It Em RETURN VALUES
465: This section is the dual of
466: .Em EXIT STATUS ,
1.27 ! schwarze 467: which is used for commands.
! 468: It documents the return values of functions in sections 2, 3, and 9.
1.19 schwarze 469: .Pp
470: See
471: .Sx \&Rv .
472: .It Em ENVIRONMENT
473: Documents any usages of environment variables, e.g.,
474: .Xr environ 7 .
475: .Pp
476: See
477: .Sx \&Ev .
478: .It Em FILES
1.27 ! schwarze 479: Documents files used.
! 480: It's helpful to document both the file and a short description of how
! 481: the file is used (created, modified, etc.).
1.19 schwarze 482: .Pp
483: See
484: .Sx \&Pa .
1.27 ! schwarze 485: .It Em EXIT STATUS
! 486: Command exit status for section 1, 6, and 8 manuals.
! 487: This section is the dual of
! 488: .Em RETURN VALUES ,
! 489: which is used for functions.
! 490: Historically, this information was described in
! 491: .Em DIAGNOSTICS ,
! 492: a practise that is now discouraged.
! 493: .Pp
! 494: See
! 495: .Sx \&Ex .
1.19 schwarze 496: .It Em EXAMPLES
1.27 ! schwarze 497: Example usages.
! 498: This often contains snippets of well-formed, well-tested invocations.
! 499: Make doubly sure that your examples work properly!
1.19 schwarze 500: .It Em DIAGNOSTICS
1.27 ! schwarze 501: Documents error conditions.
! 502: This is most useful in section 4 manuals.
1.19 schwarze 503: Historically, this section was used in place of
504: .Em EXIT STATUS
505: for manuals in sections 1, 6, and 8; however, this practise is
506: discouraged.
507: .Pp
508: See
1.21 schwarze 509: .Sx \&Bl
510: .Fl diag .
1.19 schwarze 511: .It Em ERRORS
512: Documents error handling in sections 2, 3, and 9.
513: .Pp
514: See
515: .Sx \&Er .
516: .It Em SEE ALSO
1.27 ! schwarze 517: References other manuals with related topics.
! 518: This section should exist for most manuals.
! 519: Cross-references should conventionally be ordered first by section, then
! 520: alphabetically.
1.19 schwarze 521: .Pp
522: See
523: .Sx \&Xr .
524: .It Em STANDARDS
1.27 ! schwarze 525: References any standards implemented or used.
! 526: If not adhering to any standards, the
1.19 schwarze 527: .Em HISTORY
528: section should be used instead.
529: .Pp
530: See
531: .Sx \&St .
532: .It Em HISTORY
533: The history of any manual without a
534: .Em STANDARDS
535: section should be described in this section.
536: .It Em AUTHORS
537: Credits to authors, if applicable, should appear in this section.
538: Authors should generally be noted by both name and an e-mail address.
539: .Pp
540: See
541: .Sx \&An .
542: .It Em CAVEATS
543: Explanations of common misuses and misunderstandings should be explained
544: in this section.
545: .It Em BUGS
546: Extant bugs should be described in this section.
547: .It Em SECURITY CONSIDERATIONS
548: Documents any security precautions that operators should consider.
1.17 schwarze 549: .El
1.8 schwarze 550: .Sh MACRO SYNTAX
1.14 schwarze 551: Macros are one to three three characters in length and begin with a
552: control character ,
1.15 schwarze 553: .Sq \&. ,
1.27 ! schwarze 554: at the beginning of the line.
! 555: An arbitrary amount of whitespace may sit between the control character
! 556: and the macro name.
! 557: Thus, the following are equivalent:
1.17 schwarze 558: .Bd -literal -offset indent
559: \&.Pp
560: \&.\ \ \ \&Pp
561: .Ed
1.15 schwarze 562: .Pp
1.27 ! schwarze 563: The syntax of a macro depends on its classification.
! 564: In this section,
1.15 schwarze 565: .Sq \-arg
1.8 schwarze 566: refers to macro arguments, which may be followed by zero or more
1.15 schwarze 567: .Sq parm
1.8 schwarze 568: parameters;
1.15 schwarze 569: .Sq \&Yo
1.8 schwarze 570: opens the scope of a macro; and if specified,
1.15 schwarze 571: .Sq \&Yc
1.8 schwarze 572: closes it out.
1.15 schwarze 573: .Pp
1.8 schwarze 574: The
1.15 schwarze 575: .Em Callable
1.8 schwarze 576: column indicates that the macro may be called subsequent to the initial
1.27 ! schwarze 577: line-macro.
! 578: If a macro is not callable, then its invocation after the initial line
! 579: macro is interpreted as opaque text, such that
1.16 schwarze 580: .Sq \&.Fl \&Sh
1.14 schwarze 581: produces
1.16 schwarze 582: .Sq Fl \&Sh .
1.15 schwarze 583: .Pp
1.14 schwarze 584: The
1.15 schwarze 585: .Em Parsable
1.8 schwarze 586: column indicates whether the macro may be followed by further
1.27 ! schwarze 587: (ostensibly callable) macros.
! 588: If a macro is not parsable, subsequent macro invocations on the line
! 589: will be interpreted as opaque text.
1.15 schwarze 590: .Pp
1.14 schwarze 591: The
1.15 schwarze 592: .Em Scope
1.8 schwarze 593: column, if applicable, describes closure rules.
1.15 schwarze 594: .Ss Block full-explicit
1.27 ! schwarze 595: Multi-line scope closed by an explicit closing macro.
! 596: All macros contains bodies; only
1.17 schwarze 597: .Sx \&Bf
1.8 schwarze 598: contains a head.
1.15 schwarze 599: .Bd -literal -offset indent
1.9 schwarze 600: \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB
601: \(lBbody...\(rB
1.1 kristaps 602: \&.Yc
1.15 schwarze 603: .Ed
604: .Pp
605: .Bl -column -compact -offset indent "MacroX" "CallableX" "ParsableX" "closed by XXX"
606: .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope
1.17 schwarze 607: .It Sx \&Bd Ta \&No Ta \&No Ta closed by Sx \&Ed
608: .It Sx \&Bf Ta \&No Ta \&No Ta closed by Sx \&Ef
609: .It Sx \&Bk Ta \&No Ta \&No Ta closed by Sx \&Ek
610: .It Sx \&Bl Ta \&No Ta \&No Ta closed by Sx \&El
611: .It Sx \&Ed Ta \&No Ta \&No Ta opened by Sx \&Bd
612: .It Sx \&Ef Ta \&No Ta \&No Ta opened by Sx \&Bf
613: .It Sx \&Ek Ta \&No Ta \&No Ta opened by Sx \&Bk
614: .It Sx \&El Ta \&No Ta \&No Ta opened by Sx \&Bl
1.15 schwarze 615: .El
616: .Ss Block full-implicit
1.8 schwarze 617: Multi-line scope closed by end-of-file or implicitly by another macro.
1.9 schwarze 618: All macros have bodies; some
1.15 schwarze 619: .Po
1.17 schwarze 620: .Sx \&It Fl bullet ,
621: .Fl hyphen ,
622: .Fl dash ,
623: .Fl enum ,
624: .Fl item
1.15 schwarze 625: .Pc
1.17 schwarze 626: don't have heads; only one
627: .Po
628: .Sx \&It Fl column
1.22 schwarze 629: .Pc
1.17 schwarze 630: has multiple heads.
1.15 schwarze 631: .Bd -literal -offset indent
1.9 schwarze 632: \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead... \(lBTa head...\(rB\(rB
633: \(lBbody...\(rB
1.15 schwarze 634: .Ed
635: .Pp
636: .Bl -column -compact -offset indent "MacroX" "CallableX" "ParsableX" "closed by XXXXXXXXXXX"
637: .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope
1.17 schwarze 638: .It Sx \&It Ta \&No Ta Yes Ta closed by Sx \&It , Sx \&El
639: .It Sx \&Nd Ta \&No Ta \&No Ta closed by Sx \&Sh
640: .It Sx \&Sh Ta \&No Ta \&No Ta closed by Sx \&Sh
641: .It Sx \&Ss Ta \&No Ta \&No Ta closed by Sx \&Sh , Sx \&Ss
1.15 schwarze 642: .El
643: .Ss Block partial-explicit
1.27 ! schwarze 644: Like block full-explicit, but also with single-line scope.
! 645: Each has at least a body and, in limited circumstances, a head
1.17 schwarze 646: .Po
647: .Sx \&Fo ,
648: .Sx \&Eo
649: .Pc
1.9 schwarze 650: and/or tail
1.17 schwarze 651: .Pq Sx \&Ec .
1.15 schwarze 652: .Bd -literal -offset indent
1.9 schwarze 653: \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB
654: \(lBbody...\(rB
655: \&.Yc \(lBtail...\(rB
1.8 schwarze 656:
657: \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB \
1.9 schwarze 658: \(lBbody...\(rB \&Yc \(lBtail...\(rB
1.15 schwarze 659: .Ed
660: .Pp
661: .Bl -column "MacroX" "CallableX" "ParsableX" "closed by XXXX" -compact -offset indent
662: .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope
1.17 schwarze 663: .It Sx \&Ac Ta Yes Ta Yes Ta opened by Sx \&Ao
664: .It Sx \&Ao Ta Yes Ta Yes Ta closed by Sx \&Ac
665: .It Sx \&Bc Ta Yes Ta Yes Ta closed by Sx \&Bo
666: .It Sx \&Bo Ta Yes Ta Yes Ta opened by Sx \&Bc
667: .It Sx \&Brc Ta Yes Ta Yes Ta opened by Sx \&Bro
668: .It Sx \&Bro Ta Yes Ta Yes Ta closed by Sx \&Brc
669: .It Sx \&Dc Ta Yes Ta Yes Ta opened by Sx \&Do
670: .It Sx \&Do Ta Yes Ta Yes Ta closed by Sx \&Dc
671: .It Sx \&Ec Ta Yes Ta Yes Ta opened by Sx \&Eo
672: .It Sx \&Eo Ta Yes Ta Yes Ta closed by Sx \&Ec
673: .It Sx \&Fc Ta Yes Ta Yes Ta opened by Sx \&Fo
674: .It Sx \&Fo Ta \&No Ta \&No Ta closed by Sx \&Fc
675: .It Sx \&Oc Ta Yes Ta Yes Ta closed by Sx \&Oo
676: .It Sx \&Oo Ta Yes Ta Yes Ta opened by Sx \&Oc
677: .It Sx \&Pc Ta Yes Ta Yes Ta closed by Sx \&Po
678: .It Sx \&Po Ta Yes Ta Yes Ta opened by Sx \&Pc
679: .It Sx \&Qc Ta Yes Ta Yes Ta opened by Sx \&Oo
680: .It Sx \&Qo Ta Yes Ta Yes Ta closed by Sx \&Oc
681: .It Sx \&Re Ta \&No Ta \&No Ta opened by Sx \&Rs
682: .It Sx \&Rs Ta \&No Ta \&No Ta closed by Sx \&Re
683: .It Sx \&Sc Ta Yes Ta Yes Ta opened by Sx \&So
684: .It Sx \&So Ta Yes Ta Yes Ta closed by Sx \&Sc
685: .It Sx \&Xc Ta Yes Ta Yes Ta opened by Sx \&Xo
686: .It Sx \&Xo Ta Yes Ta Yes Ta closed by Sx \&Xc
1.15 schwarze 687: .El
688: .Ss Block partial-implicit
1.9 schwarze 689: Like block full-implicit, but with single-line scope closed by
1.15 schwarze 690: .Sx Reserved Characters
1.8 schwarze 691: or end of line.
1.15 schwarze 692: .Bd -literal -offset indent
1.8 schwarze 693: \&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBbody...\(rB \(lBres...\(rB
1.15 schwarze 694: .Ed
695: .Pp
696: .Bl -column "MacroX" "CallableX" "ParsableX" -compact -offset indent
697: .It Em Macro Ta Em Callable Ta Em Parsable
1.17 schwarze 698: .It Sx \&Aq Ta Yes Ta Yes
699: .It Sx \&Bq Ta Yes Ta Yes
700: .It Sx \&Brq Ta Yes Ta Yes
701: .It Sx \&D1 Ta \&No Ta \&Yes
702: .It Sx \&Dl Ta \&No Ta Yes
703: .It Sx \&Dq Ta Yes Ta Yes
704: .It Sx \&Op Ta Yes Ta Yes
705: .It Sx \&Pq Ta Yes Ta Yes
706: .It Sx \&Ql Ta Yes Ta Yes
707: .It Sx \&Qq Ta Yes Ta Yes
708: .It Sx \&Sq Ta Yes Ta Yes
1.22 schwarze 709: .It Sx \&Vt Ta Yes Ta Yes
1.15 schwarze 710: .El
1.22 schwarze 711: .Pp
712: Note that the
713: .Sx \&Vt
714: macro is a
715: .Sx Block partial-implicit
716: only when invoked as the first macro
717: in a SYNOPSIS section line, else it is
718: .Sx In-line .
1.15 schwarze 719: .Ss In-line
1.9 schwarze 720: Closed by
1.15 schwarze 721: .Sx Reserved Characters ,
1.27 ! schwarze 722: end of line, fixed argument lengths, and/or subsequent macros.
! 723: In-line macros have only text children.
! 724: If a number (or inequality) of arguments is
1.15 schwarze 725: .Pq n ,
1.1 kristaps 726: then the macro accepts an arbitrary number of arguments.
1.15 schwarze 727: .Bd -literal -offset indent
1.8 schwarze 728: \&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB \(lbres...\(rb
729:
730: \&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB Yc...
731:
732: \&.Yo \(lB\-arg \(lBval...\(rB\(rB arg0 arg1 argN
1.15 schwarze 733: .Ed
734: .Pp
735: .Bl -column "MacroX" "CallableX" "ParsableX" "Arguments" -compact -offset indent
736: .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Arguments
1.17 schwarze 737: .It Sx \&%A Ta \&No Ta \&No Ta >0
738: .It Sx \&%B Ta \&No Ta \&No Ta >0
739: .It Sx \&%C Ta \&No Ta \&No Ta >0
740: .It Sx \&%D Ta \&No Ta \&No Ta >0
741: .It Sx \&%I Ta \&No Ta \&No Ta >0
742: .It Sx \&%J Ta \&No Ta \&No Ta >0
743: .It Sx \&%N Ta \&No Ta \&No Ta >0
744: .It Sx \&%O Ta \&No Ta \&No Ta >0
745: .It Sx \&%P Ta \&No Ta \&No Ta >0
1.18 schwarze 746: .It Sx \&%Q Ta \&No Ta \&No Ta >0
1.17 schwarze 747: .It Sx \&%R Ta \&No Ta \&No Ta >0
748: .It Sx \&%T Ta \&No Ta \&No Ta >0
1.18 schwarze 749: .It Sx \&%U Ta \&No Ta \&No Ta >0
1.17 schwarze 750: .It Sx \&%V Ta \&No Ta \&No Ta >0
751: .It Sx \&Ad Ta Yes Ta Yes Ta n
752: .It Sx \&An Ta Yes Ta Yes Ta n
753: .It Sx \&Ap Ta Yes Ta Yes Ta 0
754: .It Sx \&Ar Ta Yes Ta Yes Ta n
755: .It Sx \&At Ta Yes Ta Yes Ta 1
756: .It Sx \&Bsx Ta Yes Ta Yes Ta n
757: .It Sx \&Bt Ta \&No Ta \&No Ta 0
758: .It Sx \&Bx Ta Yes Ta Yes Ta n
759: .It Sx \&Cd Ta Yes Ta Yes Ta >0
760: .It Sx \&Cm Ta Yes Ta Yes Ta n
761: .It Sx \&Db Ta \&No Ta \&No Ta 1
762: .It Sx \&Dd Ta \&No Ta \&No Ta >0
763: .It Sx \&Dt Ta \&No Ta \&No Ta n
764: .It Sx \&Dv Ta Yes Ta Yes Ta n
765: .It Sx \&Dx Ta Yes Ta Yes Ta n
766: .It Sx \&Em Ta Yes Ta Yes Ta >0
767: .It Sx \&En Ta \&No Ta \&No Ta 0
768: .It Sx \&Er Ta Yes Ta Yes Ta >0
769: .It Sx \&Es Ta \&No Ta \&No Ta 0
770: .It Sx \&Ev Ta Yes Ta Yes Ta n
771: .It Sx \&Ex Ta \&No Ta \&No Ta n
772: .It Sx \&Fa Ta Yes Ta Yes Ta n
773: .It Sx \&Fd Ta \&No Ta \&No Ta >0
774: .It Sx \&Fl Ta Yes Ta Yes Ta n
775: .It Sx \&Fn Ta Yes Ta Yes Ta >0
776: .It Sx \&Fr Ta \&No Ta \&No Ta n
777: .It Sx \&Ft Ta Yes Ta Yes Ta n
778: .It Sx \&Fx Ta Yes Ta Yes Ta n
779: .It Sx \&Hf Ta \&No Ta \&No Ta n
780: .It Sx \&Ic Ta Yes Ta Yes Ta >0
781: .It Sx \&In Ta \&No Ta \&No Ta n
782: .It Sx \&Lb Ta \&No Ta \&No Ta 1
783: .It Sx \&Li Ta Yes Ta Yes Ta n
784: .It Sx \&Lk Ta Yes Ta Yes Ta n
785: .It Sx \&Lp Ta \&No Ta \&No Ta 0
786: .It Sx \&Ms Ta Yes Ta Yes Ta >0
787: .It Sx \&Mt Ta Yes Ta Yes Ta >0
788: .It Sx \&Nm Ta Yes Ta Yes Ta n
789: .It Sx \&No Ta Yes Ta Yes Ta 0
790: .It Sx \&Ns Ta Yes Ta Yes Ta 0
791: .It Sx \&Nx Ta Yes Ta Yes Ta n
792: .It Sx \&Os Ta \&No Ta \&No Ta n
793: .It Sx \&Ot Ta \&No Ta \&No Ta n
794: .It Sx \&Ox Ta Yes Ta Yes Ta n
795: .It Sx \&Pa Ta Yes Ta Yes Ta n
1.25 schwarze 796: .It Sx \&Pf Ta Yes Ta Yes Ta 1
1.17 schwarze 797: .It Sx \&Pp Ta \&No Ta \&No Ta 0
798: .It Sx \&Rv Ta \&No Ta \&No Ta n
799: .It Sx \&Sm Ta \&No Ta \&No Ta 1
800: .It Sx \&St Ta \&No Ta Yes Ta 1
801: .It Sx \&Sx Ta Yes Ta Yes Ta >0
802: .It Sx \&Sy Ta Yes Ta Yes Ta >0
803: .It Sx \&Tn Ta Yes Ta Yes Ta >0
804: .It Sx \&Ud Ta \&No Ta \&No Ta 0
805: .It Sx \&Ux Ta Yes Ta Yes Ta n
806: .It Sx \&Va Ta Yes Ta Yes Ta n
807: .It Sx \&Vt Ta Yes Ta Yes Ta >0
1.22 schwarze 808: .It Sx \&Xr Ta Yes Ta Yes Ta >0
1.17 schwarze 809: .It Sx \&br Ta \&No Ta \&No Ta 0
810: .It Sx \&sp Ta \&No Ta \&No Ta 1
1.22 schwarze 811: .El
1.17 schwarze 812: .Sh REFERENCE
813: This section is a canonical reference of all macros, arranged
1.27 ! schwarze 814: alphabetically.
! 815: For the scoping of individual macros, see
1.17 schwarze 816: .Sx MACRO SYNTAX .
817: .Ss \&%A
818: Author name of an
819: .Sx \&Rs
820: block. Multiple authors should each be accorded their own
821: .Sx \%%A
822: line. Author names should be ordered with full or abbreviated
823: forename(s) first, then full surname.
824: .Ss \&%B
825: Book title of an
826: .Sx \&Rs
827: block. This macro may also be used in a non-bibliographic context when
828: referring to book titles.
829: .Ss \&%C
830: Publication city or location of an
831: .Sx \&Rs
832: block.
833: .Pp
834: .Em Remarks :
835: this macro is not implemented in
836: .Xr groff 1 .
837: .Ss \&%D
838: Publication date of an
839: .Sx \&Rs
1.19 schwarze 840: block. This should follow the reduced or canonical form syntax
841: described in
1.17 schwarze 842: .Sx Dates .
843: .Ss \&%I
844: Publisher or issuer name of an
845: .Sx \&Rs
846: block.
847: .Ss \&%J
848: Journal name of an
849: .Sx \&Rs
850: block.
851: .Ss \&%N
852: Issue number (usually for journals) of an
853: .Sx \&Rs
854: block.
855: .Ss \&%O
856: Optional information of an
857: .Sx \&Rs
858: block.
859: .Ss \&%P
860: Book or journal page number of an
861: .Sx \&Rs
862: block.
863: .Ss \&%Q
864: Institutional author (school, government, etc.) of an
865: .Sx \&Rs
866: block. Multiple institutional authors should each be accorded their own
867: .Sx \&%Q
868: line.
869: .Ss \&%R
870: Technical report name of an
871: .Sx \&Rs
872: block.
873: .Ss \&%T
874: Article title of an
875: .Sx \&Rs
876: block. This macro may also be used in a non-bibliographical context
877: when referring to article titles.
1.18 schwarze 878: .Ss \&%U
879: URI of reference document.
1.17 schwarze 880: .Ss \&%V
881: Volume number of an
882: .Sx \&Rs
883: block.
884: .Ss \&Ac
885: Closes an
886: .Sx \&Ao
887: block. Does not have any tail arguments.
888: .Ss \&Ad
889: Address construct: usually in the context of an computational address in
890: memory, not a physical (post) address.
891: .Pp
892: Examples:
1.25 schwarze 893: .D1 \&.Ad [0,$]
894: .D1 \&.Ad 0x00000000
1.17 schwarze 895: .Ss \&An
1.27 ! schwarze 896: Author name.
! 897: This macro may alternatively accepts the following arguments, although
! 898: these may not be specified along with a parameter:
1.17 schwarze 899: .Bl -tag -width 12n -offset indent
900: .It Fl split
901: Renders a line break before each author listing.
902: .It Fl nosplit
903: The opposite of
904: .Fl split .
905: .El
906: .Pp
907: In the AUTHORS section, the default is not to split the first author
908: listing, but all subsequent author listings, whether or not they're
1.27 ! schwarze 909: interspersed by other macros or text, are split.
! 910: Thus, specifying
1.17 schwarze 911: .Fl split
1.27 ! schwarze 912: will cause the first listing also to be split.
! 913: If not in the AUTHORS section, the default is not to split.
1.17 schwarze 914: .Pp
915: Examples:
1.25 schwarze 916: .D1 \&.An -nosplit
917: .D1 \&.An J. D. Ullman .
1.17 schwarze 918: .Pp
919: .Em Remarks :
920: the effects of
921: .Fl split
922: or
923: .Fl nosplit
924: are re-set when entering the AUTHORS section, so if one specifies
925: .Sx \&An Fl nosplit
926: in the general document body, it must be re-specified in the AUTHORS
927: section.
928: .Ss \&Ao
1.27 ! schwarze 929: Begins a block enclosed by angled brackets.
! 930: Does not have any head arguments.
1.17 schwarze 931: .Pp
932: Examples:
1.25 schwarze 933: .D1 \&.Fl -key= \&Ns \&Ao \&Ar val \&Ac
1.17 schwarze 934: .Pp
935: See also
936: .Sx \&Aq .
937: .Ss \&Ap
1.27 ! schwarze 938: Inserts an apostrophe without any surrounding white-space.
! 939: This is generally used as a grammatic device when referring to the verb
! 940: form of a function:
1.17 schwarze 941: .Bd -literal -offset indent
942: \&.Fn execve Ap d
943: .Ed
944: .Ss \&Aq
1.22 schwarze 945: Encloses its arguments in angled brackets.
1.17 schwarze 946: .Pp
947: Examples:
1.25 schwarze 948: .D1 \&.Fl -key= \&Ns \&Aq \&Ar val
1.17 schwarze 949: .Pp
950: .Em Remarks :
951: this macro is often abused for rendering URIs, which should instead use
952: .Sx \&Lk
953: or
954: .Sx \&Mt ,
955: or to note pre-processor
956: .Dq Li #include
957: statements, which should use
958: .Sx \&In .
959: .Pp
960: See also
961: .Sx \&Ao .
962: .Ss \&Ar
1.27 ! schwarze 963: Command arguments.
! 964: If an argument is not provided, the string
1.17 schwarze 965: .Dq file ...
966: is used as a default.
967: .Pp
968: Examples:
1.25 schwarze 969: .D1 \&.Fl o \&Ns \&Ar file1
970: .D1 \&.Ar
971: .D1 \&.Ar arg1 , arg2 .
1.17 schwarze 972: .Ss \&At
1.27 ! schwarze 973: Formats an AT&T version.
! 974: Accepts at most one parameter:
1.17 schwarze 975: .Bl -tag -width 12n -offset indent
976: .It Cm v[1-7] | 32v
977: A version of
978: .At .
979: .It Cm V[.[1-4]]?
980: A system version of
981: .At .
982: .El
983: .Pp
984: Note that these parameters do not begin with a hyphen.
985: .Pp
986: Examples:
1.25 schwarze 987: .D1 \&.At
988: .D1 \&.At V.1
1.17 schwarze 989: .Pp
990: See also
991: .Sx \&Bsx ,
992: .Sx \&Bx ,
993: .Sx \&Dx ,
994: .Sx \&Fx ,
995: .Sx \&Nx ,
996: .Sx \&Ox ,
997: and
998: .Sx \&Ux .
999: .Ss \&Bc
1000: Closes a
1001: .Sx \&Bo
1002: block. Does not have any tail arguments.
1003: .Ss \&Bd
1.27 ! schwarze 1004: Begins a display block.
! 1005: A display is collection of macros or text which may be collectively
! 1006: offset or justified in a manner different from that
! 1007: of the enclosing context.
! 1008: By default, the block is preceded by a vertical space.
1.17 schwarze 1009: .Pp
1010: Each display is associated with a type, which must be one of the
1011: following arguments:
1012: .Bl -tag -width 12n -offset indent
1013: .It Fl ragged
1014: Only left-justify the block.
1015: .It Fl unfilled
1016: Do not justify the block at all.
1017: .It Fl filled
1018: Left- and right-justify the block.
1019: .It Fl literal
1020: Alias for
1021: .Fl unfilled .
1022: .It Fl centered
1023: Centre-justify each line.
1024: .El
1025: .Pp
1.27 ! schwarze 1026: The type must be provided first.
! 1027: Secondary arguments are as follows:
1.17 schwarze 1028: .Bl -tag -width 12n -offset indent
1029: .It Fl offset Ar width
1030: Offset by the value of
1031: .Ar width ,
1032: which is interpreted as one of the following, specified in order:
1033: .Bl -item
1034: .It
1035: As one of the pre-defined strings
1036: .Ar indent ,
1037: the width of standard indentation;
1038: .Ar indent-two ,
1039: twice
1040: .Ar indent ;
1041: .Ar left ,
1042: which has no effect ;
1043: .Ar right ,
1044: which justifies to the right margin; and
1045: .Ar center ,
1046: which aligns around an imagined centre axis.
1047: .It
1.27 ! schwarze 1048: As a precalculated width for a named macro.
! 1049: The most popular is the imaginary macro
1.18 schwarze 1050: .Ar \&Ds ,
1.17 schwarze 1051: which resolves to
1052: .Ar 6n .
1053: .It
1054: As a scaling unit following the syntax described in
1055: .Sx Scaling Widths .
1056: .It
1057: As the calculated string length of the opaque string.
1058: .El
1059: .Pp
1060: If unset, it will revert to the value of
1061: .Ar 8n
1062: as described in
1063: .Sx Scaling Widths .
1064: .It Fl compact
1065: Do not assert a vertical space before the block.
1066: .It Fl file Ar file
1067: Prepend the file
1068: .Ar file
1069: before any text or macros within the block.
1070: .El
1071: .Pp
1072: Examples:
1073: .Bd -literal -offset indent
1074: \&.Bd \-unfilled \-offset two-indent \-compact
1075: Hello world.
1076: \&.Ed
1077: .Ed
1078: .Pp
1079: See also
1080: .Sx \&D1
1081: and
1082: .Sx \&Dl .
1083: .Ss \&Bf
1084: .Ss \&Bk
1085: .Ss \&Bl
1.21 schwarze 1086: .\" Begins a list composed of one or more list entries. A list entry is
1087: .\" specified by the
1088: .\" .Sx \&It
1089: .\" macro, which consists of a head and optional body. By default, a list
1090: .\" is preceded by a blank line. A list must specify one of the following
1091: .\" list types:
1092: .\" .Bl -tag -width 12n
1093: .\" .It Fl bullet
1094: .\" A list offset by a bullet. The head of list entries must be empty.
1095: .\" List entry bodies are justified after the bullet.
1096: .\" .It Fl column
1097: .\" A columnated list. The number of columns is specified as arguments to
1098: .\" the
1099: .\" .Sx \&Bl
1100: .\" macro (the deprecated form of following the invocation of
1101: .\" .Fl column
1102: .\" is also accepted). Arguments dictate the width of columns specified in
1103: .\" list entries. List entry bodies must be left empty. Columns specified
1104: .\" in the list entry head are justified to their position in the sequence
1105: .\" of columns.
1106: .\" .It Fl dash
1107: .\" A list offset by a dash (hyphen). The head of list entries must be
1108: .\" empty. List entry bodies are justified past the dash.
1109: .\" .It Fl diag
1110: .\" Like
1111: .\" .Fl inset
1112: .\" lists, but with additional formatting to the head.
1113: .\" .It Fl enum
1114: .\" A list offset by a number indicating list entry position. The head of
1115: .\" list entries must be empty. List entry bodies are justified past the
1116: .\" enumeration.
1117: .\" .It Fl hang
1118: .\" Like
1119: .\" .Fl tag ,
1120: .\" but instead of list bodies justifying to the head on the first line,
1121: .\" they trail the head text.
1122: .\" .It Fl hyphen
1123: .\" Synonym for
1124: .\" .Fl dash .
1125: .\" .It Fl inset
1126: .\" Like
1127: .\" .Fl tag ,
1128: .\" but list entry bodies aren't justified.
1129: .\" .It Fl item
1130: .\" An un-justified list. This produces blocks of text.
1131: .\" .It Fl ohang
1132: .\" List bodies are placed on the line following the head.
1133: .\" .It Fl tag
1134: .\" A list offset by list entry heads. List entry bodies are justified
1135: .\" after the head.
1136: .\" .El
1137: .\" .Pp
1138: .\" More...
1139: .\" .
1.17 schwarze 1140: .Ss \&Bo
1.27 ! schwarze 1141: Begins a block enclosed by square brackets.
! 1142: Does not have any head arguments.
1.17 schwarze 1143: .Pp
1144: Examples:
1145: .Bd -literal -offset indent
1146: \&.Bo 1 ,
1.25 schwarze 1147: \&.Dv BUFSIZ \&Bc
1.17 schwarze 1148: .Ed
1149: .Pp
1150: See also
1151: .Sx \&Bq .
1152: .Ss \&Bq
1.22 schwarze 1153: Encloses its arguments in square brackets.
1.17 schwarze 1154: .Pp
1155: Examples:
1.25 schwarze 1156: .D1 \&.Bq 1 , \&Dv BUFSIZ
1.17 schwarze 1157: .Pp
1158: .Em Remarks :
1159: this macro is sometimes abused to emulate optional arguments for
1160: commands; the correct macros to use for this purpose are
1161: .Sx \&Op ,
1162: .Sx \&Oo ,
1163: and
1164: .Sx \&Oc .
1165: .Pp
1166: See also
1167: .Sx \&Bo .
1168: .Ss \&Brc
1169: Closes a
1170: .Sx \&Bro
1171: block. Does not have any tail arguments.
1172: .Ss \&Bro
1.27 ! schwarze 1173: Begins a block enclosed by curly braces.
! 1174: Does not have any head arguments.
1.17 schwarze 1175: .Pp
1176: Examples:
1177: .Bd -literal -offset indent
1178: \&.Bro 1 , ... ,
1.25 schwarze 1179: \&.Va n \&Brc
1.17 schwarze 1180: .Ed
1181: .Pp
1182: See also
1183: .Sx \&Brq .
1184: .Ss \&Brq
1185: Encloses its arguments in curly braces.
1186: .Pp
1187: Examples:
1.25 schwarze 1188: .D1 \&.Brq 1 , ... , \&Va n
1.17 schwarze 1189: .Pp
1190: See also
1191: .Sx \&Bro .
1192: .Ss \&Bsx
1193: Format the BSD/OS version provided as an argument, or a default value if
1194: no argument is provided.
1195: .Pp
1196: Examples:
1.25 schwarze 1197: .D1 \&.Bsx 1.0
1198: .D1 \&.Bsx
1.17 schwarze 1199: .Pp
1200: See also
1201: .Sx \&At ,
1202: .Sx \&Bx ,
1203: .Sx \&Dx ,
1204: .Sx \&Fx ,
1205: .Sx \&Nx ,
1206: .Sx \&Ox ,
1207: and
1208: .Sx \&Ux .
1209: .Ss \&Bt
1210: Prints
1211: .Dq is currently in beta test.
1212: .Ss \&Bx
1213: Format the BSD version provided as an argument, or a default value if no
1214: argument is provided.
1215: .Pp
1216: Examples:
1.25 schwarze 1217: .D1 \&.Bx 4.4
1218: .D1 \&.Bx
1.17 schwarze 1219: .Pp
1220: See also
1221: .Sx \&At ,
1222: .Sx \&Bsx ,
1223: .Sx \&Dx ,
1224: .Sx \&Fx ,
1225: .Sx \&Nx ,
1226: .Sx \&Ox ,
1227: and
1228: .Sx \&Ux .
1229: .Ss \&Cd
1.27 ! schwarze 1230: Configuration declaration.
! 1231: This denotes strings accepted by
1.17 schwarze 1232: .Xr config 8 .
1233: .Pp
1234: Examples:
1.25 schwarze 1235: .D1 \&.Cd device le0 at scode?
1.17 schwarze 1236: .Pp
1237: .Em Remarks :
1238: this macro is commonly abused by using quoted literals to retain
1239: white-space and align consecutive
1240: .Sx \&Cd
1.27 ! schwarze 1241: declarations.
! 1242: This practise is discouraged.
1.17 schwarze 1243: .Ss \&Cm
1.27 ! schwarze 1244: Command modifiers.
! 1245: Useful when specifying configuration options or keys.
1.17 schwarze 1246: .Pp
1247: Examples:
1.25 schwarze 1248: .D1 \&.Cm ControlPath
1249: .D1 \&.Cm ControlMaster
1.17 schwarze 1250: .Pp
1251: See also
1252: .Sx \&Fl .
1253: .Ss \&D1
1.27 ! schwarze 1254: One-line indented display.
! 1255: This is formatted by the default rules and is useful for simple indented
! 1256: statements.
! 1257: It is followed by a newline.
1.17 schwarze 1258: .Pp
1259: Examples:
1.25 schwarze 1260: .D1 \&.D1 \&Fl abcdefgh
1.17 schwarze 1261: .Pp
1262: See also
1263: .Sx \&Bd
1264: and
1265: .Sx \&Dl .
1266: .Ss \&Db
1267: .Ss \&Dc
1268: Closes a
1269: .Sx \&Do
1270: block. Does not have any tail arguments.
1271: .Ss \&Dd
1.27 ! schwarze 1272: Document date.
! 1273: This is the mandatory first macro of any
1.17 schwarze 1274: .Nm
1.27 ! schwarze 1275: manual.
! 1276: Its calling syntax is as follows:
1.17 schwarze 1277: .Pp
1278: .D1 \. Ns Sx \&Dd Cm date
1279: .Pp
1.22 schwarze 1280: The
1.17 schwarze 1281: .Cm date
1282: field may be either
1283: .Ar $\&Mdocdate$ ,
1284: which signifies the current manual revision date dictated by
1.19 schwarze 1285: .Xr cvs 1 ,
1.17 schwarze 1286: or instead a valid canonical date as specified by
1287: .Sx Dates .
1.19 schwarze 1288: If a date does not conform, the current date is used instead.
1.17 schwarze 1289: .Pp
1290: Examples:
1.25 schwarze 1291: .D1 \&.Dd $\&Mdocdate$
1292: .D1 \&.Dd $\&Mdocdate: July 21 2007$
1293: .D1 \&.Dd July 21, 2007
1.17 schwarze 1294: .Pp
1295: See also
1296: .Sx \&Dt
1297: and
1298: .Sx \&Os .
1299: .Ss \&Dl
1.27 ! schwarze 1300: One-line intended display.
! 1301: This is formatted as literal text and is useful for commands and
! 1302: invocations.
! 1303: It is followed by a newline.
1.17 schwarze 1304: .Pp
1305: Examples:
1.25 schwarze 1306: .D1 \&.Dl % mandoc mdoc.7 | less
1.17 schwarze 1307: .Pp
1308: See also
1309: .Sx \&Bd
1310: and
1311: .Sx \&D1 .
1312: .Ss \&Do
1313: Begins a block enclosed by double quotes. Does not have any head
1314: arguments.
1315: .Pp
1316: Examples:
1.25 schwarze 1317: .D1 \&.D1 \&Do April is the cruellest month \&Dc \e(em T.S. Eliot
1.17 schwarze 1318: .Pp
1319: See also
1320: .Sx \&Dq .
1321: .Ss \&Dq
1.22 schwarze 1322: Encloses its arguments in double quotes.
1.17 schwarze 1323: .Pp
1324: Examples:
1.25 schwarze 1325: .Bd -literal -offset indent -compact
1.17 schwarze 1326: \&.Dq April is the cruellest month
1327: \e(em T.S. Eliot
1328: .Ed
1329: .Pp
1330: See also
1331: .Sx \&Do .
1332: .Ss \&Dt
1.27 ! schwarze 1333: Document title.
! 1334: This is the mandatory second macro of any
1.17 schwarze 1335: .Nm
1.27 ! schwarze 1336: file.
! 1337: Its calling syntax is as follows:
1.17 schwarze 1338: .Pp
1339: .D1 \. Ns Sx \&Dt Cm title section Op Cm volume | arch
1340: .Pp
1341: Its arguments are as follows:
1342: .Bl -tag -width Ds -offset Ds
1343: .It Cm title
1.27 ! schwarze 1344: The document's title (name).
! 1345: This should be capitalised and is required.
1.17 schwarze 1346: .It Cm section
1.27 ! schwarze 1347: The manual section.
! 1348: This may be one of
1.17 schwarze 1349: .Ar 1
1350: .Pq utilities ,
1351: .Ar 2
1352: .Pq system calls ,
1353: .Ar 3
1354: .Pq libraries ,
1355: .Ar 3p
1356: .Pq Perl libraries ,
1357: .Ar 4
1358: .Pq devices ,
1359: .Ar 5
1360: .Pq file formats ,
1361: .Ar 6
1362: .Pq games ,
1363: .Ar 7
1364: .Pq miscellaneous ,
1365: .Ar 8
1366: .Pq system utilities ,
1367: .Ar 9
1368: .Pq kernel functions ,
1369: .Ar X11
1370: .Pq X Window System ,
1371: .Ar X11R6
1372: .Pq X Window System ,
1373: .Ar unass
1374: .Pq unassociated ,
1375: .Ar local
1376: .Pq local system ,
1377: .Ar draft
1378: .Pq draft manual ,
1379: or
1380: .Ar paper
1381: .Pq paper .
1382: It is also required and should correspond to the manual's filename
1383: suffix.
1384: .It Cm volume
1385: This overrides the volume inferred from
1386: .Ar section .
1387: This field is optional, and if specified, must be one of
1388: .Ar USD
1389: .Pq users' supplementary documents ,
1390: .Ar PS1
1391: .Pq programmers' supplementary documents ,
1392: .Ar AMD
1393: .Pq administrators' supplementary documents ,
1394: .Ar SMM
1395: .Pq system managers' manuals ,
1396: .Ar URM
1397: .Pq users' reference manuals ,
1398: .Ar PRM
1399: .Pq programmers' reference manuals ,
1400: .Ar KM
1401: .Pq kernel manuals ,
1402: .Ar IND
1403: .Pq master index ,
1404: .Ar MMI
1405: .Pq master index ,
1406: .Ar LOCAL
1407: .Pq local manuals ,
1408: .Ar LOC
1409: .Pq local manuals ,
1410: or
1411: .Ar CON
1412: .Pq contributed manuals .
1413: .It Cm arch
1.27 ! schwarze 1414: This specifies a specific relevant architecture.
! 1415: If
1.17 schwarze 1416: .Cm volume
1417: is not provided, it may be used in its place, else it may be used
1.27 ! schwarze 1418: subsequent that.
! 1419: It, too, is optional.
! 1420: It must be one of
1.17 schwarze 1421: .Ar alpha ,
1422: .Ar amd64 ,
1423: .Ar amiga ,
1424: .Ar arc ,
1425: .Ar arm ,
1426: .Ar armish ,
1427: .Ar aviion ,
1428: .Ar hp300 ,
1429: .Ar hppa ,
1430: .Ar hppa64 ,
1431: .Ar i386 ,
1432: .Ar landisk ,
1.23 schwarze 1433: .Ar loongson ,
1.17 schwarze 1434: .Ar luna88k ,
1435: .Ar mac68k ,
1436: .Ar macppc ,
1437: .Ar mvme68k ,
1438: .Ar mvme88k ,
1439: .Ar mvmeppc ,
1440: .Ar pmax ,
1441: .Ar sgi ,
1442: .Ar socppc ,
1443: .Ar sparc ,
1444: .Ar sparc64 ,
1445: .Ar sun3 ,
1446: .Ar vax ,
1447: or
1448: .Ar zaurus .
1449: .El
1450: .Pp
1451: Examples:
1.25 schwarze 1452: .D1 \&.Dt FOO 1
1453: .D1 \&.Dt FOO 4 KM
1454: .D1 \&.Dt FOO 9 i386
1455: .D1 \&.Dt FOO 9 KM i386
1.17 schwarze 1456: .Pp
1457: See also
1458: .Sx \&Dd
1459: and
1460: .Sx \&Os .
1461: .Ss \&Dv
1462: Defined variables such as preprocessor constants.
1463: .Pp
1464: Examples:
1.25 schwarze 1465: .D1 \&.Dv BUFSIZ
1466: .D1 \&.Dv STDOUT_FILENO
1.17 schwarze 1467: .Pp
1468: See also
1469: .Sx \&Er .
1470: .Ss \&Dx
1.19 schwarze 1471: Format the DragonFly BSD version provided as an argument, or a default
1.17 schwarze 1472: value if no argument is provided.
1473: .Pp
1474: Examples:
1.25 schwarze 1475: .D1 \&.Dx 2.4.1
1476: .D1 \&.Dx
1.17 schwarze 1477: .Pp
1478: See also
1479: .Sx \&At ,
1480: .Sx \&Bsx ,
1481: .Sx \&Bx ,
1482: .Sx \&Fx ,
1483: .Sx \&Nx ,
1484: .Sx \&Ox ,
1485: and
1486: .Sx \&Ux .
1487: .Ss \&Ec
1488: .Ss \&Ed
1489: .Ss \&Ef
1490: .Ss \&Ek
1491: .Ss \&El
1492: .Ss \&Em
1.27 ! schwarze 1493: Denotes text that should be emphasised.
! 1494: Note that this is a presentation term and should not be used for
! 1495: stylistically decorating technical terms.
1.17 schwarze 1496: .Pp
1497: Examples:
1.25 schwarze 1498: .D1 \&.Em Warnings!
1499: .D1 \&.Em Remarks :
1.17 schwarze 1500: .Ss \&En
1501: .Ss \&Eo
1502: .Ss \&Er
1.25 schwarze 1503: Display error constants.
1.17 schwarze 1504: .Pp
1505: Examples:
1.25 schwarze 1506: .D1 \&.Er EPERM
1507: .D1 \&.Er ENOENT
1.17 schwarze 1508: .Pp
1509: See also
1510: .Sx \&Dv .
1511: .Ss \&Es
1512: .Ss \&Ev
1513: Environmental variables such as those specified in
1514: .Xr environ 7 .
1515: .Pp
1516: Examples:
1.25 schwarze 1517: .D1 \&.Ev DISPLAY
1518: .D1 \&.Ev PATH
1.17 schwarze 1519: .Ss \&Ex
1.27 ! schwarze 1520: Inserts text regarding a utility's exit values.
! 1521: This macro must have first the
1.17 schwarze 1522: .Fl std
1523: argument specified, then an optional
1524: .Ar utility .
1525: If
1526: .Ar utility
1527: is not provided, the document's name as stipulated in
1528: .Sx \&Nm
1529: is provided.
1530: .Ss \&Fa
1531: .Ss \&Fc
1532: .Ss \&Fd
1533: .Ss \&Fl
1.27 ! schwarze 1534: Command-line flag.
! 1535: Used when listing arguments to command-line utilities.
! 1536: Prints a fixed-width hyphen
1.21 schwarze 1537: .Sq \-
1.27 ! schwarze 1538: directly followed by each argument.
! 1539: If no arguments are provided, a hyphen is printed followed by a space.
! 1540: If the argument is a macro, a hyphen is prefixed to the subsequent macro
! 1541: output.
1.21 schwarze 1542: .Pp
1543: Examples:
1.25 schwarze 1544: .D1 \&.Fl a b c
1545: .D1 \&.Fl \&Pf a b
1546: .D1 \&.Fl
1547: .D1 \&.Op \&Fl o \&Ns \&Ar file
1.21 schwarze 1548: .Pp
1549: See also
1550: .Sx \&Cm .
1.17 schwarze 1551: .Ss \&Fn
1552: .Ss \&Fo
1553: .Ss \&Fr
1554: .Ss \&Ft
1555: .Ss \&Fx
1556: Format the FreeBSD version provided as an argument, or a default value
1557: if no argument is provided.
1558: .Pp
1559: Examples:
1.25 schwarze 1560: .D1 \&.Fx 7.1
1561: .D1 \&.Fx
1.17 schwarze 1562: .Pp
1563: See also
1564: .Sx \&At ,
1565: .Sx \&Bsx ,
1566: .Sx \&Bx ,
1567: .Sx \&Dx ,
1568: .Sx \&Nx ,
1569: .Sx \&Ox ,
1570: and
1571: .Sx \&Ux .
1572: .Ss \&Hf
1573: .Ss \&Ic
1574: .Ss \&In
1575: .Ss \&It
1576: .Ss \&Lb
1577: .Ss \&Li
1578: .Ss \&Lk
1.27 ! schwarze 1579: Format a hyperlink.
! 1580: The calling syntax is as follows:
1.18 schwarze 1581: .Pp
1582: .D1 \. Ns Sx \&Lk Cm uri Op Cm name
1583: .Pp
1584: Examples:
1.25 schwarze 1585: .D1 \&.Lk http://bsd.lv "The BSD.lv Project"
1586: .D1 \&.Lk http://bsd.lv
1.18 schwarze 1587: .Pp
1588: See also
1589: .Sx \&Mt .
1.17 schwarze 1590: .Ss \&Lp
1591: .Ss \&Ms
1592: .Ss \&Mt
1593: .Ss \&Nd
1594: .Ss \&Nm
1595: .Ss \&No
1596: .Ss \&Ns
1597: .Ss \&Nx
1598: Format the NetBSD version provided as an argument, or a default value if
1599: no argument is provided.
1600: .Pp
1601: Examples:
1.25 schwarze 1602: .D1 \&.Nx 5.01
1603: .D1 \&.Nx
1.17 schwarze 1604: .Pp
1605: See also
1606: .Sx \&At ,
1607: .Sx \&Bsx ,
1608: .Sx \&Bx ,
1609: .Sx \&Dx ,
1610: .Sx \&Fx ,
1611: .Sx \&Ox ,
1612: and
1613: .Sx \&Ux .
1614: .Ss \&Oc
1615: .Ss \&Oo
1616: .Ss \&Op
1617: .Ss \&Os
1.27 ! schwarze 1618: Document operating system version.
! 1619: This is the mandatory third macro of
1.17 schwarze 1620: any
1621: .Nm
1622: file. Its calling syntax is as follows:
1623: .Pp
1624: .D1 \. Ns Sx \&Os Op Cm system
1625: .Pp
1626: The optional
1627: .Cm system
1.27 ! schwarze 1628: parameter specifies the relevant operating system or environment.
! 1629: Left unspecified, it defaults to the local operating system version.
! 1630: This is the suggested form.
1.17 schwarze 1631: .Pp
1632: Examples:
1.25 schwarze 1633: .D1 \&.Os
1634: .D1 \&.Os KTH/CSC/TCS
1635: .D1 \&.Os BSD 4.3
1.17 schwarze 1636: .Pp
1637: See also
1638: .Sx \&Dd
1639: and
1640: .Sx \&Dt .
1641: .Ss \&Ot
1642: Unknown usage.
1643: .Pp
1644: .Em Remarks :
1645: this macro has been deprecated.
1646: .Ss \&Ox
1647: Format the OpenBSD version provided as an argument, or a default value
1648: if no argument is provided.
1649: .Pp
1650: Examples:
1.25 schwarze 1651: .D1 \&.Ox 4.5
1652: .D1 \&.Ox
1.17 schwarze 1653: .Pp
1654: See also
1655: .Sx \&At ,
1656: .Sx \&Bsx ,
1657: .Sx \&Bx ,
1658: .Sx \&Dx ,
1659: .Sx \&Fx ,
1660: .Sx \&Nx ,
1661: and
1662: .Sx \&Ux .
1663: .Ss \&Pa
1664: .Ss \&Pc
1665: .Ss \&Pf
1666: .Ss \&Po
1667: .Ss \&Pp
1668: .Ss \&Pq
1669: .Ss \&Qc
1670: .Ss \&Ql
1671: .Ss \&Qo
1672: .Ss \&Qq
1673: .Ss \&Re
1674: Closes a
1675: .Sx \&Rs
1.27 ! schwarze 1676: block.
! 1677: Does not have any tail arguments.
1.17 schwarze 1678: .Ss \&Rs
1679: Begins a bibliographic
1680: .Pq Dq reference
1.27 ! schwarze 1681: block.
! 1682: Does not have any head arguments.
! 1683: The block macro may only contain
1.17 schwarze 1684: .Sx \&%A ,
1685: .Sx \&%B ,
1686: .Sx \&%C ,
1687: .Sx \&%D ,
1688: .Sx \&%I ,
1689: .Sx \&%J ,
1690: .Sx \&%N ,
1691: .Sx \&%O ,
1692: .Sx \&%P ,
1693: .Sx \&%Q ,
1694: .Sx \&%R ,
1695: .Sx \&%T ,
1696: and
1697: .Sx \&%V
1698: child macros (at least one must be specified).
1699: .Pp
1700: Examples:
1.25 schwarze 1701: .Bd -literal -offset indent -compact
1.17 schwarze 1702: \&.Rs
1703: \&.%A J. E. Hopcroft
1704: \&.%A J. D. Ullman
1705: \&.%B Introduction to Automata Theory, Languages, and Computation
1706: \&.%I Addison-Wesley
1707: \&.%C Reading, Massachusettes
1708: \&.%D 1979
1709: \&.Re
1710: .Ed
1711: .Pp
1712: If an
1713: .Sx \&Rs
1714: block is used within a SEE ALSO section, a vertical space is asserted
1715: before the rendered output, else the block continues on the current
1716: line.
1717: .Ss \&Rv
1718: .Ss \&Sc
1719: .Ss \&Sh
1720: .Ss \&Sm
1721: .Ss \&So
1722: .Ss \&Sq
1723: .Ss \&Ss
1724: .Ss \&St
1725: .Ss \&Sx
1726: .Ss \&Sy
1727: .Ss \&Tn
1728: .Ss \&Ud
1729: .Ss \&Ux
1.27 ! schwarze 1730: Format the UNIX name.
! 1731: Accepts no argument.
1.17 schwarze 1732: .Pp
1733: Examples:
1.25 schwarze 1734: .D1 \&.Ux
1.17 schwarze 1735: .Pp
1736: See also
1737: .Sx \&At ,
1738: .Sx \&Bsx ,
1739: .Sx \&Bx ,
1740: .Sx \&Dx ,
1741: .Sx \&Fx ,
1742: .Sx \&Nx ,
1743: and
1744: .Sx \&Ox .
1745: .Ss \&Va
1746: .Ss \&Vt
1.27 ! schwarze 1747: A variable type.
! 1748: This is also used for indicating global variables in the SYNOPSIS
! 1749: section, in which case a variable name is also specified.
! 1750: Note that it accepts
1.22 schwarze 1751: .Sx Block partial-implicit
1752: syntax when invoked as the first macro in the SYNOPSIS section, else it
1753: accepts ordinary
1754: .Sx In-line
1755: syntax.
1756: .Pp
1757: Note that this should not be confused with
1758: .Sx \&Ft ,
1759: which is used for function return types.
1760: .Pp
1761: Examples:
1.25 schwarze 1762: .D1 \&.Vt unsigned char
1763: .D1 \&.Vt extern const char * const sys_signame[] ;
1.22 schwarze 1764: .Pp
1765: See also
1766: .Sx \&Ft
1767: and
1768: .Sx \&Va .
1.17 schwarze 1769: .Ss \&Xc
1.24 schwarze 1770: Close a scope opened by
1771: .Sx \&Xo .
1.17 schwarze 1772: .Ss \&Xo
1.27 ! schwarze 1773: Open an extension scope.
! 1774: This macro originally existed to extend the 9-argument limit of troff;
! 1775: since this limit has been lifted, the macro has been deprecated.
1.17 schwarze 1776: .Ss \&Xr
1.22 schwarze 1777: Link to another manual
1778: .Pq Qq cross-reference .
1779: Its calling syntax is
1780: .Pp
1781: .D1 \. Ns Sx \&Xr Cm name section
1782: .Pp
1783: The
1784: .Cm name
1785: and
1786: .Cm section
1.27 ! schwarze 1787: are the name and section of the linked manual.
! 1788: If
1.22 schwarze 1789: .Cm section
1790: is followed by non-punctuation, an
1791: .Sx \&Ns
1.27 ! schwarze 1792: is inserted into the token stream.
! 1793: This behaviour is for compatibility with
1.22 schwarze 1794: .Xr groff 1 .
1795: .Pp
1796: Examples:
1.25 schwarze 1797: .D1 \&.Xr mandoc 1
1798: .D1 \&.Xr mandoc 1 ;
1799: .D1 \&.Xr mandoc 1 \&Ns s behaviour
1.17 schwarze 1800: .Ss \&br
1801: .Ss \&sp
1.1 kristaps 1802: .Sh COMPATIBILITY
1.26 schwarze 1803: This section documents compatibility between mandoc and other other
1804: troff implementations, at this time limited to GNU troff
1805: .Pq Qq groff .
1.9 schwarze 1806: The term
1.15 schwarze 1807: .Qq historic groff
1.26 schwarze 1808: refers to groff versions before the
1.15 schwarze 1809: .Pa doc.tmac
1.9 schwarze 1810: file re-write
1.15 schwarze 1811: .Pq somewhere between 1.15 and 1.19 .
1.26 schwarze 1812: .Pp
1813: Heirloom troff, the other significant troff implementation accepting
1814: \-mdoc, is similar to historic groff.
1.15 schwarze 1815: .Pp
1816: .Bl -dash -compact
1817: .It
1.21 schwarze 1818: The comment syntax
1819: .Sq \e."
1820: is no longer accepted.
1821: .It
1.26 schwarze 1822: In groff, the
1.21 schwarze 1823: .Sx \&Pa
1824: macro does not format its arguments when used in the FILES section under
1.27 ! schwarze 1825: certain list types.
! 1826: mandoc does.
1.21 schwarze 1827: .It
1.26 schwarze 1828: Historic groff does not print a dash for empty
1.21 schwarze 1829: .Sx \&Fl
1.27 ! schwarze 1830: arguments.
! 1831: mandoc and newer groff implementations do.
1.21 schwarze 1832: .It
1.26 schwarze 1833: groff behaves irregularly when specifying
1.20 schwarze 1834: .Sq \ef
1.26 schwarze 1835: .Sx Text Decoration
1.27 ! schwarze 1836: within line-macro scopes.
! 1837: mandoc follows a consistent system.
1.20 schwarze 1838: .It
1.26 schwarze 1839: In mandoc, negative scaling units are truncated to zero; groff would
1.27 ! schwarze 1840: move to prior lines.
! 1841: Furthermore, the
1.17 schwarze 1842: .Sq f
1843: scaling unit, while accepted, is rendered as the default unit.
1.15 schwarze 1844: .It
1.9 schwarze 1845: In quoted literals, groff allowed pair-wise double-quotes to produce a
1.27 ! schwarze 1846: standalone double-quote in formatted output.
! 1847: This idiosyncratic behaviour is not applicable in mandoc.
1.15 schwarze 1848: .It
1.17 schwarze 1849: Display types
1.20 schwarze 1850: .Sx \&Bd
1851: .Fl center
1.17 schwarze 1852: and
1853: .Fl right
1854: are aliases for
1.26 schwarze 1855: .Fl left
1856: in manodc. Furthermore, the
1.17 schwarze 1857: .Fl file Ar file
1.27 ! schwarze 1858: argument is ignored.
! 1859: Lastly, since text is not right-justified in mandoc (or even groff),
1.17 schwarze 1860: .Fl ragged
1861: and
1862: .Fl filled
1863: are aliases, as are
1864: .Fl literal
1865: and
1866: .Fl unfilled .
1.15 schwarze 1867: .It
1.27 ! schwarze 1868: Historic groff has many un-callable macros.
! 1869: Most of these (excluding some block-level macros) are now callable.
1.15 schwarze 1870: .It
1.9 schwarze 1871: The vertical bar
1.15 schwarze 1872: .Sq \(ba
1.3 schwarze 1873: made historic groff
1.15 schwarze 1874: .Qq go orbital
1.26 schwarze 1875: but has been a proper delimiter since then.
1.15 schwarze 1876: .It
1.26 schwarze 1877: .Sx \&It Fl nested
1.3 schwarze 1878: is assumed for all lists (it wasn't in historic groff): any list may be
1879: nested and
1.17 schwarze 1880: .Fl enum
1.1 kristaps 1881: lists will restart the sequence only for the sub-list.
1.15 schwarze 1882: .It
1.1 kristaps 1883: Some manuals use
1.17 schwarze 1884: .Sx \&Li
1.1 kristaps 1885: incorrectly by following it with a reserved character and expecting the
1.27 ! schwarze 1886: delimiter to render.
! 1887: This is not supported in mandoc.
1.15 schwarze 1888: .It
1.9 schwarze 1889: In groff, the
1.17 schwarze 1890: .Sx \&Fo
1.27 ! schwarze 1891: macro only produces the first parameter.
! 1892: This is not the case in mandoc.
1.26 schwarze 1893: .It
1894: In groff, the
1895: .Sx \&Cd ,
1896: .Sx \&Er ,
1897: and
1898: .Sx \&Ex
1.27 ! schwarze 1899: macros were stipulated only to occur in certain manual sections.
! 1900: mandoc does not have these restrictions.
1.15 schwarze 1901: .El
1.1 kristaps 1902: .Sh SEE ALSO
1.15 schwarze 1903: .Xr mandoc 1 ,
1904: .Xr mandoc_char 7
1.1 kristaps 1905: .Sh AUTHORS
1906: The
1.15 schwarze 1907: .Nm
1.9 schwarze 1908: reference was written by
1.26 schwarze 1909: .An Kristaps Dzonsons Aq kristaps@bsd.lv .
1.17 schwarze 1910: .\"
1911: .\" XXX: this really isn't the place for these caveats.
1912: .\" .
1913: .\" .
1914: .\" .Sh CAVEATS
1915: .\" There are many ambiguous parts of mdoc.
1916: .\" .
1917: .\" .Pp
1918: .\" .Bl -dash -compact
1919: .\" .It
1920: .\" .Sq \&Fa
1921: .\" should be
1922: .\" .Sq \&Va
1923: .\" as function arguments are variables.
1924: .\" .It
1925: .\" .Sq \&Ft
1926: .\" should be
1927: .\" .Sq \&Vt
1928: .\" as function return types are still types. Furthermore, the
1929: .\" .Sq \&Ft
1930: .\" should be removed and
1931: .\" .Sq \&Fo ,
1932: .\" which ostensibly follows it, should follow the same convention as
1933: .\" .Sq \&Va .
1934: .\" .It
1935: .\" .Sq \&Va
1936: .\" should formalise that only one or two arguments are acceptable: a
1937: .\" variable name and optional, preceding type.
1938: .\" .It
1939: .\" .Sq \&Fd
1940: .\" is ambiguous. It's commonly used to indicate an include file in the
1941: .\" synopsis section.
1942: .\" .Sq \&In
1943: .\" should be used, instead.
1944: .\" .It
1945: .\" Only the
1946: .\" .Sq \-literal
1947: .\" argument to
1948: .\" .Sq \&Bd
1949: .\" makes sense. The remaining ones should be removed.
1950: .\" .It
1951: .\" The
1952: .\" .Sq \&Xo
1953: .\" and
1954: .\" .Sq \&Xc
1955: .\" macros should be deprecated.
1956: .\" .It
1957: .\" The
1958: .\" .Sq \&Dt
1959: .\" macro lacks clarity. It should be absolutely clear which title will
1960: .\" render when formatting the manual page.
1961: .\" .It
1962: .\" A
1963: .\" .Sq \&Lx
1964: .\" should be provided for Linux (\(`a la
1965: .\" .Sq \&Ox ,
1966: .\" .Sq \&Nx
1967: .\" etc.).
1968: .\" .It
1969: .\" There's no way to refer to references in
1970: .\" .Sq \&Rs/Re
1971: .\" blocks.
1972: .\" .It
1973: .\" The \-split and \-nosplit dictates via
1974: .\" .Sq \&An
1975: .\" are re-set when entering and leaving the AUTHORS section.
1976: .\" .El
1977: .\" .
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