Annotation of mandoc/mdoc.7, Revision 1.81
1.81 ! kristaps 1: .\" $Id: mdoc.7,v 1.80 2010/01/01 16:27:32 kristaps Exp $
1.1 kristaps 2: .\"
1.23 kristaps 3: .\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1 kristaps 4: .\"
5: .\" Permission to use, copy, modify, and distribute this software for any
1.22 kristaps 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: .\"
1.22 kristaps 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.
1.50 kristaps 16: .\"
1.1 kristaps 17: .Dd $Mdocdate$
1.20 kristaps 18: .Dt MDOC 7
1.1 kristaps 19: .Os
1.56 kristaps 20: .
21: .
1.1 kristaps 22: .Sh NAME
1.57 kristaps 23: .Nm mdoc
24: .Nd mdoc language reference
1.56 kristaps 25: .
26: .
1.1 kristaps 27: .Sh DESCRIPTION
28: The
1.57 kristaps 29: .Nm mdoc
1.50 kristaps 30: language is used to format
1.57 kristaps 31: .Bx
32: .Ux
1.43 kristaps 33: manuals. In this reference document, we describe its syntax, structure,
34: and usage. Our reference implementation is
1.57 kristaps 35: .Xr mandoc 1 .
1.28 kristaps 36: The
1.57 kristaps 37: .Sx COMPATIBILITY
1.50 kristaps 38: section describes compatibility with
1.57 kristaps 39: .Xr groff 1 .
40: .
41: .Pp
1.13 kristaps 42: An
1.57 kristaps 43: .Nm
1.1 kristaps 44: document follows simple rules: lines beginning with the control
1.50 kristaps 45: character
1.57 kristaps 46: .Sq \.
1.1 kristaps 47: are parsed for macros. Other lines are interpreted within the scope of
1.13 kristaps 48: prior macros:
1.57 kristaps 49: .Bd -literal -offset indent
1.13 kristaps 50: \&.Sh Macro lines change control state.
51: Other lines are interpreted within the current state.
1.57 kristaps 52: .Ed
1.56 kristaps 53: .
54: .
1.46 kristaps 55: .Sh LANGUAGE SYNTAX
1.57 kristaps 56: .Nm
1.13 kristaps 57: documents may contain only graphable 7-bit ASCII characters, the space
1.43 kristaps 58: character, and, in certain circumstances, the tab character. All
59: manuals must have
1.57 kristaps 60: .Ux
1.50 kristaps 61: line terminators.
1.56 kristaps 62: .
63: .
1.57 kristaps 64: .Ss Comments
1.43 kristaps 65: Text following a
1.57 kristaps 66: .Sq \e" ,
1.43 kristaps 67: whether in a macro or free-form text line, is ignored to the end of
68: line. A macro line with only a control character and comment escape,
1.57 kristaps 69: .Sq \&.\e" ,
1.58 kristaps 70: is also ignored. Macro lines with only a control charater and optionally
71: whitespace are stripped from input.
1.56 kristaps 72: .
73: .
1.57 kristaps 74: .Ss Reserved Characters
1.2 kristaps 75: Within a macro line, the following characters are reserved:
1.61 kristaps 76: .Pp
1.57 kristaps 77: .Bl -tag -width Ds -offset indent -compact
78: .It \&.
79: .Pq period
80: .It \&,
81: .Pq comma
82: .It \&:
83: .Pq colon
84: .It \&;
85: .Pq semicolon
86: .It \&(
87: .Pq left-parenthesis
88: .It \&)
89: .Pq right-parenthesis
90: .It \&[
91: .Pq left-bracket
92: .It \&]
93: .Pq right-bracket
94: .It \&?
95: .Pq question
96: .It \&!
97: .Pq exclamation
98: .It \&|
99: .Pq vertical bar
100: .El
101: .
102: .Pp
1.5 kristaps 103: Use of reserved characters is described in
1.57 kristaps 104: .Sx MACRO SYNTAX .
1.43 kristaps 105: For general use in macro lines, these characters must either be escaped
106: with a non-breaking space
1.57 kristaps 107: .Pq Sq \e&
1.50 kristaps 108: or, if applicable, an appropriate escape sequence used.
1.56 kristaps 109: .
110: .
1.57 kristaps 111: .Ss Special Characters
1.43 kristaps 112: Special characters may occur in both macro and free-form lines.
113: Sequences begin with the escape character
1.57 kristaps 114: .Sq \e
1.50 kristaps 115: followed by either an open-parenthesis
1.57 kristaps 116: .Sq \&(
1.1 kristaps 117: for two-character sequences; an open-bracket
1.57 kristaps 118: .Sq \&[
1.1 kristaps 119: for n-character sequences (terminated at a close-bracket
1.57 kristaps 120: .Sq \&] ) ;
1.43 kristaps 121: or a single one-character sequence. See
1.57 kristaps 122: .Xr mandoc_char 7
1.50 kristaps 123: for a complete list. Examples include
1.57 kristaps 124: .Sq \e(em
125: .Pq em-dash
1.50 kristaps 126: and
1.57 kristaps 127: .Sq \ee
128: .Pq back-slash .
1.56 kristaps 129: .
130: .
1.57 kristaps 131: .Ss Text Decoration
1.54 kristaps 132: Terms may be text-decorated using the
1.57 kristaps 133: .Sq \ef
1.74 kristaps 134: escape followed by an indicator: B (bold), I, (italic), R (Roman), or P
1.76 kristaps 135: (revert to previous mode):
1.75 kristaps 136: .Pp
1.76 kristaps 137: .D1 \efBbold\efR \efIitalic\efP
138: .Pp
139: A numerical representation 3, 2, or 1 (bold, italic, and Roman,
1.77 kristaps 140: respectively) may be used instead. A text decoration is valid within
141: the current font scope only: if a macro opens a font scope alongside
142: its own scope, such as
1.78 kristaps 143: .Sx \&Bf
1.77 kristaps 144: .Cm \&Sy ,
145: in-scope invocations of
146: .Sq \ef
147: are only valid within the font scope of the macro. If
148: .Sq \ef
149: is specified outside of any font scope, such as in unenclosed, free-form
150: text, it will affect the remainder of the document.
1.76 kristaps 151: .Pp
152: Text may also be sized with the
153: .Sq \es
154: escape, whose syntax is one of
155: .Sq \es+-n
156: for one-digit numerals;
157: .Sq \es(+-nn
158: or
159: .Sq \es+-(nn
160: for two-digit numerals; and
161: .Sq \es[+-N] ,
162: .Sq \es+-[N] ,
163: .Sq \es'+-N' ,
164: or
165: .Sq \es+-'N'
166: for arbitrary-digit numerals:
167: .Pp
168: .D1 \es+1bigger\es-1
169: .D1 \es[+10]much bigger\es[-10]
170: .D1 \es+(10much bigger\es-(10
171: .D1 \es+'100'much much bigger\es-'100'
172: .Pp
173: Note these forms are
174: .Em not
175: recommended for
1.57 kristaps 176: .Nm ,
1.74 kristaps 177: which encourages semantic annotation.
1.56 kristaps 178: .
179: .
1.57 kristaps 180: .Ss Predefined Strings
1.54 kristaps 181: Historically,
1.57 kristaps 182: .Xr groff 1
1.54 kristaps 183: also defined a set of package-specific
1.57 kristaps 184: .Dq predefined strings ,
1.54 kristaps 185: which, like
1.57 kristaps 186: .Sx Special Characters ,
1.54 kristaps 187: demark special output characters and strings by way of input codes.
188: Predefined strings are escaped with the slash-asterisk,
1.57 kristaps 189: .Sq \e* :
1.54 kristaps 190: single-character
1.57 kristaps 191: .Sq \e*X ,
1.54 kristaps 192: two-character
1.57 kristaps 193: .Sq \e*(XX ,
1.54 kristaps 194: and N-character
1.57 kristaps 195: .Sq \e*[N] .
1.54 kristaps 196: See
1.57 kristaps 197: .Xr mandoc_char 7
1.54 kristaps 198: for a complete list. Examples include
1.57 kristaps 199: .Sq \e*(Am
200: .Pq ampersand
1.54 kristaps 201: and
1.57 kristaps 202: .Sq \e*(Ba
203: .Pq vertical bar .
1.56 kristaps 204: .
205: .
1.57 kristaps 206: .Ss Whitespace
1.46 kristaps 207: In non-literal free-form lines, consecutive blocks of whitespace are
208: pruned from input and added later in the output filter, if applicable:
1.57 kristaps 209: .Bd -literal -offset indent
1.46 kristaps 210: These spaces are pruned from input.
1.50 kristaps 211: \&.Bd \-literal
1.46 kristaps 212: These are not.
213: \&.Ed
1.57 kristaps 214: .Ed
215: .
216: .Pp
1.46 kristaps 217: In macro lines, whitespace delimits arguments and is discarded. If
1.47 kristaps 218: arguments are quoted, whitespace within the quotes is retained.
1.57 kristaps 219: .
220: .Pp
1.46 kristaps 221: Blank lines are only permitted within literal contexts, as are lines
222: containing only whitespace. Tab characters are only acceptable when
1.50 kristaps 223: delimiting
1.57 kristaps 224: .Sq \&Bl \-column
1.46 kristaps 225: or when in a literal context.
1.56 kristaps 226: .
227: .
1.57 kristaps 228: .Ss Quotation
1.46 kristaps 229: Macro arguments may be quoted with a double-quote to group
230: space-delimited terms or to retain blocks of whitespace. A quoted
231: argument begins with a double-quote preceded by whitespace. The next
1.48 kristaps 232: double-quote not pair-wise adjacent to another double-quote terminates
1.50 kristaps 233: the literal, regardless of surrounding whitespace.
1.57 kristaps 234: .
235: .Pp
1.50 kristaps 236: This produces tokens
1.57 kristaps 237: .Sq a" ,
238: .Sq b c ,
239: .Sq de ,
1.47 kristaps 240: and
1.57 kristaps 241: .Sq fg" .
1.47 kristaps 242: Note that any quoted term, be it argument or macro, is indiscriminately
1.50 kristaps 243: considered literal text. Thus, the following produces
1.57 kristaps 244: .Sq \&Em a :
245: .Bd -literal -offset indent
1.47 kristaps 246: \&.Em "Em a"
1.57 kristaps 247: .Ed
248: .
249: .Pp
1.46 kristaps 250: In free-form mode, quotes are regarded as opaque text.
1.56 kristaps 251: .
1.63 kristaps 252: .Ss Dates
1.66 kristaps 253: There are several macros in
254: .Nm
1.72 kristaps 255: that require a date argument. The canonical form for dates is the
256: American format:
1.66 kristaps 257: .Pp
258: .D1 Cm Month Day , Year
259: .Pp
260: The
261: .Cm Day
262: value is an optionally zero-padded numeral. The
263: .Cm Month
264: value is the full month name. The
265: .Cm Year
266: value is the full four-digit year.
267: .Pp
1.72 kristaps 268: Reduced form dates are broken-down canonical form dates:
1.66 kristaps 269: .Pp
1.72 kristaps 270: .D1 Cm Month , Year
271: .D1 Cm Year
1.66 kristaps 272: .Pp
273: Some examples of valid dates follow:
274: .Pp
275: .D1 "May, 2009" Pq reduced form
276: .D1 "2009" Pq reduced form
277: .D1 "May 20, 2009" Pq canonical form
1.63 kristaps 278: .
1.61 kristaps 279: .Ss Scaling Widths
280: Many macros support scaled widths for their arguments, such as
281: stipulating a two-inch list indentation with the following:
282: .Bd -literal -offset indent
283: \&.Bl -tag -width 2i
284: .Ed
285: .
286: .Pp
287: The syntax for scaled widths is
1.62 kristaps 288: .Sq Li [+-]?[0-9]*.[0-9]*[:unit:] ,
1.61 kristaps 289: where a decimal must be preceded or proceeded by at least one digit.
290: Negative numbers, while accepted, are truncated to zero. The following
291: scaling units are accepted:
292: .Pp
293: .Bl -tag -width Ds -offset indent -compact
294: .It c
295: centimetre
296: .It i
297: inch
298: .It P
299: pica (~1/6 inch)
300: .It p
301: point (~1/72 inch)
302: .It f
303: synonym for
304: .Sq u
305: .It v
306: default vertical span
307: .It m
308: width of rendered
309: .Sq m
310: .Pq em
311: character
312: .It n
313: width of rendered
314: .Sq n
315: .Pq en
316: character
317: .It u
318: default horizontal span
319: .It M
320: mini-em (~1/100 em)
321: .El
322: .Pp
323: Using anything other than
324: .Sq m ,
325: .Sq n ,
326: .Sq u ,
327: or
328: .Sq v
329: is necessarily non-portable across output media. See
330: .Sx COMPATIBILITY .
331: .
1.56 kristaps 332: .
1.43 kristaps 333: .Sh MANUAL STRUCTURE
1.66 kristaps 334: A well-formed
1.57 kristaps 335: .Nm
1.66 kristaps 336: document consists of a document prologue followed by one or more
337: sections.
338: .Pp
339: The prologue, which consists of (in order) the
1.64 kristaps 340: .Sx \&Dd ,
341: .Sx \&Dt ,
1.33 kristaps 342: and
1.66 kristaps 343: .Sx \&Os
344: macros, is required for every document.
345: .Pp
346: The first section (sections are denoted by
347: .Sx \&Sh )
348: must be the NAME section, consisting of at least one
1.64 kristaps 349: .Sx \&Nm
1.50 kristaps 350: followed by
1.66 kristaps 351: .Sx \&Nd .
352: .Pp
353: Following that, convention dictates specifying at least the SYNOPSIS and
354: DESCRIPTION sections, although this varies between manual sections.
355: .Pp
356: The following is a well-formed skeleton
357: .Nm
358: file:
1.57 kristaps 359: .Bd -literal -offset indent
1.43 kristaps 360: \&.Dd $\&Mdocdate$
361: \&.Dt mdoc 7
362: \&.Os
1.58 kristaps 363: \&.
1.43 kristaps 364: \&.Sh NAME
1.58 kristaps 365: \&.Nm foo
366: \&.Nd a description goes here
367: \&.\e\*q The next is for sections 2 & 3 only.
368: \&.\e\*q .Sh LIBRARY
369: \&.
370: \&.Sh SYNOPSIS
371: \&.Nm foo
372: \&.Op Fl options
373: \&.Ar
374: \&.
375: \&.Sh DESCRIPTION
376: The
377: \&.Nm
378: utility processes files ...
1.59 kristaps 379: \&.\e\*q .Sh IMPLEMENTATION NOTES
1.58 kristaps 380: \&.\e\*q The next is for sections 1 & 8 only.
381: \&.\e\*q .Sh EXIT STATUS
382: \&.\e\*q The next is for sections 2, 3, & 9 only.
383: \&.\e\*q .Sh RETURN VALUES
384: \&.\e\*q The next is for sections 1, 6, 7, & 8 only.
385: \&.\e\*q .Sh ENVIRONMENT
386: \&.\e\*q .Sh FILES
387: \&.\e\*q .Sh EXAMPLES
388: \&.\e\*q The next is for sections 1, 4, 6, 7, & 8 only.
389: \&.\e\*q .Sh DIAGNOSTICS
390: \&.\e\*q The next is for sections 2, 3, & 9 only.
391: \&.\e\*q .Sh ERRORS
392: \&.\e\*q .Sh SEE ALSO
393: \&.\e\*q .Xr foobar 1
394: \&.\e\*q .Sh STANDARDS
395: \&.\e\*q .Sh HISTORY
396: \&.\e\*q .Sh AUTHORS
397: \&.\e\*q .Sh CAVEATS
398: \&.\e\*q .Sh BUGS
399: \&.\e\*q .Sh SECURITY CONSIDERATIONS
1.57 kristaps 400: .Ed
401: .Pp
1.66 kristaps 402: The sections in a
403: .Nm
404: document are conventionally ordered as they appear above. Sections
405: should be composed as follows:
1.73 kristaps 406: .Bl -ohang -offset Ds
407: .It Em NAME
408: The name(s) and a short description of the documented material. The
409: syntax for this as follows:
410: .Bd -literal -offset indent
411: \&.Nm name0
412: \&.Nm name1
413: \&.Nm name2
414: \&.Nd a short description
415: .Ed
416: .Pp
417: The
1.66 kristaps 418: .Sx \&Nm
1.73 kristaps 419: macro(s) must precede the
420: .Sx \&Nd
421: macro.
1.80 kristaps 422: .Pp
423: See
424: .Sx \&Nm
425: and
426: .Sx \&Nd .
1.73 kristaps 427: .
428: .It Em LIBRARY
429: The name of the library containing the documented material, which is
430: assumed to be a function in a section 2 or 3 manual. The syntax for
431: this is as follows:
432: .Bd -literal -offset indent
433: \&.Lb libarm
434: .Ed
435: .Pp
436: See
1.80 kristaps 437: .Sx \&Lb .
1.73 kristaps 438: .
439: .It Em SYNOPSIS
440: Documents the utility invocation syntax, function call syntax, or device
441: configuration.
442: .Pp
443: For the first, utilities (sections 1, 6, and 8), this is
444: generally structured as follows:
445: .Bd -literal -offset indent
446: \&.Nm foo
447: \&.Op Fl v
448: \&.Op Fl o Ar file
449: \&.Op Ar
450: \&.Nm bar
451: \&.Op Fl v
452: \&.Op Fl o Ar file
453: \&.Op Ar
454: .Ed
455: .Pp
456: For the second, function calls (sections 2, 3, 9):
457: .Bd -literal -offset indent
458: \&.Vt extern const char *global;
459: \&.In header.h
460: \&.Ft "char *"
461: \&.Fn foo "const char *src"
462: \&.Ft "char *"
463: \&.Fn bar "const char *src"
464: .Ed
465: .Pp
466: And for the third, configurations (section 4):
467: .Bd -literal -offset indent
468: \&.Cd \*qit* at isa? port 0x2e\*q
469: \&.Cd \*qit* at isa? port 0x4e\*q
470: .Ed
471: .Pp
472: Manuals not in these sections generally don't need a
473: .Em SYNOPSIS .
1.80 kristaps 474: .Pp
475: See
476: .Sx \&Op ,
477: .Sx \&Cd ,
478: .Sx \&Fn ,
479: .Sx \&Ft ,
480: and
481: .Sx \&Vt .
1.73 kristaps 482: .
483: .It Em DESCRIPTION
484: This expands upon the brief, one-line description in
485: .Em NAME .
486: It usually contains a break-down of the options (if documenting a
487: command), such as:
488: .Bd -literal -offset indent
489: The arguments are as follows:
490: \&.Bl \-tag \-width Ds
491: \&.It Fl v
492: Print verbose information.
493: \&.El
494: .Ed
1.80 kristaps 495: .Pp
1.73 kristaps 496: Manuals not documenting a command won't include the above fragment.
497: .
498: .It Em IMPLEMENTATION NOTES
499: Implementation-specific notes should be kept here. This is useful when
500: implementing standard functions that may have side effects or notable
501: algorithmic implications.
502: .
503: .It Em EXIT STATUS
504: Command exit status for section 1, 6, and 8 manuals. This section is
505: the dual of
506: .Em RETURN VALUES ,
507: which is used for functions. Historically, this information was
508: described in
509: .Em DIAGNOSTICS ,
510: a practise that is now discouraged.
511: .Pp
512: See
513: .Sx \&Ex .
514: .
515: .It Em RETURN VALUES
516: This section is the dual of
517: .Em EXIT STATUS ,
518: which is used for commands. It documents the return values of functions
519: in sections 2, 3, and 9.
520: .Pp
521: See
522: .Sx \&Rv .
523: .
524: .It Em ENVIRONMENT
525: Documents any usages of environment variables, e.g.,
526: .Xr environ 7 .
527: .Pp
528: See
529: .Sx \&Ev .
530: .
531: .It Em FILES
532: Documents files used. It's helpful to document both the file and a
533: short description of how the file is used (created, modified, etc.).
534: .Pp
535: See
536: .Sx \&Pa .
537: .
538: .It Em EXAMPLES
539: Example usages. This often contains snippets of well-formed,
540: well-tested invocations. Make doubly sure that your examples work
541: properly!
542: .
543: .It Em DIAGNOSTICS
544: Documents error conditions. This is most useful in section 4 manuals.
545: Historically, this section was used in place of
546: .Em EXIT STATUS
547: for manuals in sections 1, 6, and 8; however, this practise is
548: discouraged.
549: .Pp
550: See
1.80 kristaps 551: .Sx \&Bl
552: .Fl diag .
1.73 kristaps 553: .
554: .It Em ERRORS
555: Documents error handling in sections 2, 3, and 9.
556: .Pp
557: See
558: .Sx \&Er .
559: .
560: .It Em SEE ALSO
561: References other manuals with related topics. This section should exist
562: for most manuals. Cross-references should conventionally be ordered
563: first by section, then alphabetically.
564: .Pp
565: See
566: .Sx \&Xr .
567: .
568: .It Em STANDARDS
569: References any standards implemented or used. If not adhering to any
570: standards, the
571: .Em HISTORY
572: section should be used instead.
573: .Pp
574: See
575: .Sx \&St .
576: .
577: .It Em HISTORY
578: The history of any manual without a
579: .Em STANDARDS
580: section should be described in this section.
581: .
582: .It Em AUTHORS
583: Credits to authors, if applicable, should appear in this section.
584: Authors should generally be noted by both name and an e-mail address.
585: .Pp
586: See
587: .Sx \&An .
588: .
589: .It Em CAVEATS
590: Explanations of common misuses and misunderstandings should be explained
591: in this section.
592: .
593: .It Em BUGS
594: Extant bugs should be described in this section.
595: .
596: .It Em SECURITY CONSIDERATIONS
597: Documents any security precautions that operators should consider.
598: .
1.66 kristaps 599: .El
1.56 kristaps 600: .
601: .
1.43 kristaps 602: .Sh MACRO SYNTAX
1.56 kristaps 603: Macros are one to three three characters in length and begin with a
604: control character ,
1.57 kristaps 605: .Sq \&. ,
1.56 kristaps 606: at the beginning of the line. An arbitrary amount of whitespace may
1.64 kristaps 607: sit between the control character and the macro name. Thus, the
608: following are equivalent:
609: .Bd -literal -offset indent
610: \&.Pp
611: \&.\ \ \ \&Pp
612: .Ed
1.57 kristaps 613: .
614: .Pp
1.46 kristaps 615: The syntax of a macro depends on its classification. In this section,
1.57 kristaps 616: .Sq \-arg
1.43 kristaps 617: refers to macro arguments, which may be followed by zero or more
1.57 kristaps 618: .Sq parm
1.43 kristaps 619: parameters;
1.57 kristaps 620: .Sq \&Yo
1.43 kristaps 621: opens the scope of a macro; and if specified,
1.57 kristaps 622: .Sq \&Yc
1.43 kristaps 623: closes it out.
1.57 kristaps 624: .
625: .Pp
1.43 kristaps 626: The
1.57 kristaps 627: .Em Callable
1.43 kristaps 628: column indicates that the macro may be called subsequent to the initial
1.55 kristaps 629: line-macro. If a macro is not callable, then its invocation after the
630: initial line macro is interpreted as opaque text, such that
1.60 kristaps 631: .Sq \&.Fl \&Sh
1.55 kristaps 632: produces
1.60 kristaps 633: .Sq Fl \&Sh .
1.57 kristaps 634: .
635: .Pp
1.55 kristaps 636: The
1.57 kristaps 637: .Em Parsable
1.43 kristaps 638: column indicates whether the macro may be followed by further
1.55 kristaps 639: (ostensibly callable) macros. If a macro is not parsable, subsequent
640: macro invocations on the line will be interpreted as opaque text.
1.57 kristaps 641: .
642: .Pp
1.55 kristaps 643: The
1.57 kristaps 644: .Em Scope
1.43 kristaps 645: column, if applicable, describes closure rules.
1.56 kristaps 646: .
647: .
1.57 kristaps 648: .Ss Block full-explicit
1.43 kristaps 649: Multi-line scope closed by an explicit closing macro. All macros
650: contains bodies; only
1.64 kristaps 651: .Sx \&Bf
1.43 kristaps 652: contains a head.
1.57 kristaps 653: .Bd -literal -offset indent
1.50 kristaps 654: \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB
655: \(lBbody...\(rB
1.43 kristaps 656: \&.Yc
1.57 kristaps 657: .Ed
658: .
659: .Pp
660: .Bl -column -compact -offset indent "MacroX" "CallableX" "ParsableX" "closed by XXX"
661: .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope
1.64 kristaps 662: .It Sx \&Bd Ta \&No Ta \&No Ta closed by Sx \&Ed
663: .It Sx \&Bf Ta \&No Ta \&No Ta closed by Sx \&Ef
664: .It Sx \&Bk Ta \&No Ta \&No Ta closed by Sx \&Ek
665: .It Sx \&Bl Ta \&No Ta \&No Ta closed by Sx \&El
666: .It Sx \&Ed Ta \&No Ta \&No Ta opened by Sx \&Bd
667: .It Sx \&Ef Ta \&No Ta \&No Ta opened by Sx \&Bf
668: .It Sx \&Ek Ta \&No Ta \&No Ta opened by Sx \&Bk
669: .It Sx \&El Ta \&No Ta \&No Ta opened by Sx \&Bl
1.57 kristaps 670: .El
1.56 kristaps 671: .
672: .
1.57 kristaps 673: .Ss Block full-implicit
1.43 kristaps 674: Multi-line scope closed by end-of-file or implicitly by another macro.
1.50 kristaps 675: All macros have bodies; some
1.57 kristaps 676: .Po
1.64 kristaps 677: .Sx \&It Fl bullet ,
678: .Fl hyphen ,
679: .Fl dash ,
680: .Fl enum ,
681: .Fl item
1.57 kristaps 682: .Pc
1.64 kristaps 683: don't have heads; only one
684: .Po
685: .Sx \&It Fl column
686: .Pc
687: has multiple heads.
1.57 kristaps 688: .Bd -literal -offset indent
1.50 kristaps 689: \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead... \(lBTa head...\(rB\(rB
690: \(lBbody...\(rB
1.57 kristaps 691: .Ed
1.56 kristaps 692: .
1.57 kristaps 693: .Pp
694: .Bl -column -compact -offset indent "MacroX" "CallableX" "ParsableX" "closed by XXXXXXXXXXX"
695: .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope
1.64 kristaps 696: .It Sx \&It Ta \&No Ta Yes Ta closed by Sx \&It , Sx \&El
697: .It Sx \&Nd Ta \&No Ta \&No Ta closed by Sx \&Sh
698: .It Sx \&Sh Ta \&No Ta \&No Ta closed by Sx \&Sh
699: .It Sx \&Ss Ta \&No Ta \&No Ta closed by Sx \&Sh , Sx \&Ss
1.57 kristaps 700: .El
1.56 kristaps 701: .
1.57 kristaps 702: .
703: .Ss Block partial-explicit
1.43 kristaps 704: Like block full-explicit, but also with single-line scope. Each
1.50 kristaps 705: has at least a body and, in limited circumstances, a head
1.64 kristaps 706: .Po
707: .Sx \&Fo ,
708: .Sx \&Eo
709: .Pc
1.50 kristaps 710: and/or tail
1.64 kristaps 711: .Pq Sx \&Ec .
1.57 kristaps 712: .Bd -literal -offset indent
1.50 kristaps 713: \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB
714: \(lBbody...\(rB
715: \&.Yc \(lBtail...\(rB
1.2 kristaps 716:
1.43 kristaps 717: \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB \
1.50 kristaps 718: \(lBbody...\(rB \&Yc \(lBtail...\(rB
1.57 kristaps 719: .Ed
720: .
721: .Pp
722: .Bl -column "MacroX" "CallableX" "ParsableX" "closed by XXXX" -compact -offset indent
723: .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope
1.64 kristaps 724: .It Sx \&Ac Ta Yes Ta Yes Ta opened by Sx \&Ao
1.63 kristaps 725: .It Sx \&Ao Ta Yes Ta Yes Ta closed by Sx \&Ac
1.64 kristaps 726: .It Sx \&Bc Ta Yes Ta Yes Ta closed by Sx \&Bo
727: .It Sx \&Bo Ta Yes Ta Yes Ta opened by Sx \&Bc
728: .It Sx \&Brc Ta Yes Ta Yes Ta opened by Sx \&Bro
729: .It Sx \&Bro Ta Yes Ta Yes Ta closed by Sx \&Brc
730: .It Sx \&Dc Ta Yes Ta Yes Ta opened by Sx \&Do
731: .It Sx \&Do Ta Yes Ta Yes Ta closed by Sx \&Dc
732: .It Sx \&Ec Ta Yes Ta Yes Ta opened by Sx \&Eo
733: .It Sx \&Eo Ta Yes Ta Yes Ta closed by Sx \&Ec
734: .It Sx \&Fc Ta Yes Ta Yes Ta opened by Sx \&Fo
735: .It Sx \&Fo Ta \&No Ta \&No Ta closed by Sx \&Fc
736: .It Sx \&Oc Ta Yes Ta Yes Ta closed by Sx \&Oo
737: .It Sx \&Oo Ta Yes Ta Yes Ta opened by Sx \&Oc
738: .It Sx \&Pc Ta Yes Ta Yes Ta closed by Sx \&Po
739: .It Sx \&Po Ta Yes Ta Yes Ta opened by Sx \&Pc
740: .It Sx \&Qc Ta Yes Ta Yes Ta opened by Sx \&Oo
741: .It Sx \&Qo Ta Yes Ta Yes Ta closed by Sx \&Oc
1.63 kristaps 742: .It Sx \&Re Ta \&No Ta \&No Ta opened by Sx \&Rs
743: .It Sx \&Rs Ta \&No Ta \&No Ta closed by Sx \&Re
1.64 kristaps 744: .It Sx \&Sc Ta Yes Ta Yes Ta opened by Sx \&So
745: .It Sx \&So Ta Yes Ta Yes Ta closed by Sx \&Sc
746: .It Sx \&Xc Ta Yes Ta Yes Ta opened by Sx \&Xo
747: .It Sx \&Xo Ta Yes Ta Yes Ta closed by Sx \&Xc
1.57 kristaps 748: .El
1.56 kristaps 749: .
750: .
1.57 kristaps 751: .Ss Block partial-implicit
1.50 kristaps 752: Like block full-implicit, but with single-line scope closed by
1.57 kristaps 753: .Sx Reserved Characters
1.43 kristaps 754: or end of line.
1.57 kristaps 755: .Bd -literal -offset indent
1.43 kristaps 756: \&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBbody...\(rB \(lBres...\(rB
1.57 kristaps 757: .Ed
1.56 kristaps 758: .
1.57 kristaps 759: .Pp
760: .Bl -column "MacroX" "CallableX" "ParsableX" -compact -offset indent
761: .It Em Macro Ta Em Callable Ta Em Parsable
1.64 kristaps 762: .It Sx \&Aq Ta Yes Ta Yes
763: .It Sx \&Bq Ta Yes Ta Yes
764: .It Sx \&Brq Ta Yes Ta Yes
765: .It Sx \&D1 Ta \&No Ta \&Yes
766: .It Sx \&Dl Ta \&No Ta Yes
767: .It Sx \&Dq Ta Yes Ta Yes
768: .It Sx \&Op Ta Yes Ta Yes
769: .It Sx \&Pq Ta Yes Ta Yes
770: .It Sx \&Ql Ta Yes Ta Yes
771: .It Sx \&Qq Ta Yes Ta Yes
772: .It Sx \&Sq Ta Yes Ta Yes
1.57 kristaps 773: .El
1.56 kristaps 774: .
1.57 kristaps 775: .
776: .Ss In-line
1.50 kristaps 777: Closed by
1.57 kristaps 778: .Sx Reserved Characters ,
1.43 kristaps 779: end of line, fixed argument lengths, and/or subsequent macros. In-line
780: macros have only text children. If a number (or inequality) of
1.3 kristaps 781: arguments is
1.57 kristaps 782: .Pq n ,
1.3 kristaps 783: then the macro accepts an arbitrary number of arguments.
1.57 kristaps 784: .Bd -literal -offset indent
1.43 kristaps 785: \&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB \(lbres...\(rb
786:
787: \&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB Yc...
788:
789: \&.Yo \(lB\-arg \(lBval...\(rB\(rB arg0 arg1 argN
1.57 kristaps 790: .Ed
791: .
792: .Pp
793: .Bl -column "MacroX" "CallableX" "ParsableX" "Arguments" -compact -offset indent
794: .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Arguments
1.63 kristaps 795: .It Sx \&%A Ta \&No Ta \&No Ta >0
796: .It Sx \&%B Ta \&No Ta \&No Ta >0
797: .It Sx \&%C Ta \&No Ta \&No Ta >0
798: .It Sx \&%D Ta \&No Ta \&No Ta >0
799: .It Sx \&%I Ta \&No Ta \&No Ta >0
800: .It Sx \&%J Ta \&No Ta \&No Ta >0
801: .It Sx \&%N Ta \&No Ta \&No Ta >0
802: .It Sx \&%O Ta \&No Ta \&No Ta >0
803: .It Sx \&%P Ta \&No Ta \&No Ta >0
1.69 kristaps 804: .It Sx \&%Q Ta \&No Ta \&No Ta >0
1.63 kristaps 805: .It Sx \&%R Ta \&No Ta \&No Ta >0
806: .It Sx \&%T Ta \&No Ta \&No Ta >0
1.69 kristaps 807: .It Sx \&%U Ta \&No Ta \&No Ta >0
1.63 kristaps 808: .It Sx \&%V Ta \&No Ta \&No Ta >0
1.64 kristaps 809: .It Sx \&Ad Ta Yes Ta Yes Ta n
810: .It Sx \&An Ta Yes Ta Yes Ta n
811: .It Sx \&Ap Ta Yes Ta Yes Ta 0
812: .It Sx \&Ar Ta Yes Ta Yes Ta n
813: .It Sx \&At Ta Yes Ta Yes Ta 1
814: .It Sx \&Bsx Ta Yes Ta Yes Ta n
815: .It Sx \&Bt Ta \&No Ta \&No Ta 0
816: .It Sx \&Bx Ta Yes Ta Yes Ta n
817: .It Sx \&Cd Ta Yes Ta Yes Ta >0
818: .It Sx \&Cm Ta Yes Ta Yes Ta n
819: .It Sx \&Db Ta \&No Ta \&No Ta 1
820: .It Sx \&Dd Ta \&No Ta \&No Ta >0
821: .It Sx \&Dt Ta \&No Ta \&No Ta n
822: .It Sx \&Dv Ta Yes Ta Yes Ta n
823: .It Sx \&Dx Ta Yes Ta Yes Ta n
824: .It Sx \&Em Ta Yes Ta Yes Ta >0
825: .It Sx \&En Ta \&No Ta \&No Ta 0
826: .It Sx \&Er Ta Yes Ta Yes Ta >0
827: .It Sx \&Es Ta \&No Ta \&No Ta 0
828: .It Sx \&Ev Ta Yes Ta Yes Ta n
829: .It Sx \&Ex Ta \&No Ta \&No Ta n
830: .It Sx \&Fa Ta Yes Ta Yes Ta n
831: .It Sx \&Fd Ta \&No Ta \&No Ta >0
832: .It Sx \&Fl Ta Yes Ta Yes Ta n
833: .It Sx \&Fn Ta Yes Ta Yes Ta >0
834: .It Sx \&Fr Ta \&No Ta \&No Ta n
835: .It Sx \&Ft Ta Yes Ta Yes Ta n
836: .It Sx \&Fx Ta Yes Ta Yes Ta n
837: .It Sx \&Hf Ta \&No Ta \&No Ta n
838: .It Sx \&Ic Ta Yes Ta Yes Ta >0
839: .It Sx \&In Ta \&No Ta \&No Ta n
840: .It Sx \&Lb Ta \&No Ta \&No Ta 1
841: .It Sx \&Li Ta Yes Ta Yes Ta n
842: .It Sx \&Lk Ta Yes Ta Yes Ta n
843: .It Sx \&Lp Ta \&No Ta \&No Ta 0
844: .It Sx \&Ms Ta Yes Ta Yes Ta >0
845: .It Sx \&Mt Ta Yes Ta Yes Ta >0
846: .It Sx \&Nm Ta Yes Ta Yes Ta n
847: .It Sx \&No Ta Yes Ta Yes Ta 0
848: .It Sx \&Ns Ta Yes Ta Yes Ta 0
849: .It Sx \&Nx Ta Yes Ta Yes Ta n
850: .It Sx \&Os Ta \&No Ta \&No Ta n
851: .It Sx \&Ot Ta \&No Ta \&No Ta n
852: .It Sx \&Ox Ta Yes Ta Yes Ta n
853: .It Sx \&Pa Ta Yes Ta Yes Ta n
854: .It Sx \&Pf Ta \&No Ta Yes Ta 1
855: .It Sx \&Pp Ta \&No Ta \&No Ta 0
856: .It Sx \&Rv Ta \&No Ta \&No Ta n
857: .It Sx \&Sm Ta \&No Ta \&No Ta 1
858: .It Sx \&St Ta \&No Ta Yes Ta 1
859: .It Sx \&Sx Ta Yes Ta Yes Ta >0
860: .It Sx \&Sy Ta Yes Ta Yes Ta >0
861: .It Sx \&Tn Ta Yes Ta Yes Ta >0
862: .It Sx \&Ud Ta \&No Ta \&No Ta 0
863: .It Sx \&Ux Ta Yes Ta Yes Ta n
864: .It Sx \&Va Ta Yes Ta Yes Ta n
865: .It Sx \&Vt Ta Yes Ta Yes Ta >0
866: .It Sx \&Xr Ta Yes Ta Yes Ta >0, <3
867: .It Sx \&br Ta \&No Ta \&No Ta 0
868: .It Sx \&sp Ta \&No Ta \&No Ta 1
1.57 kristaps 869: .El
1.56 kristaps 870: .
871: .
1.63 kristaps 872: .Sh REFERENCE
873: This section is a canonical reference of all macros, arranged
874: alphabetically. For the scoping of individual macros, see
875: .Sx MACRO SYNTAX .
876: .
877: .Ss \&%A
878: Author name of an
879: .Sx \&Rs
880: block. Multiple authors should each be accorded their own
1.64 kristaps 881: .Sx \%%A
1.66 kristaps 882: line. Author names should be ordered with full or abbreviated
883: forename(s) first, then full surname.
1.64 kristaps 884: .
1.63 kristaps 885: .Ss \&%B
886: Book title of an
887: .Sx \&Rs
888: block. This macro may also be used in a non-bibliographic context when
889: referring to book titles.
1.64 kristaps 890: .
1.63 kristaps 891: .Ss \&%C
892: Publication city or location of an
893: .Sx \&Rs
894: block.
895: .Pp
1.65 kristaps 896: .Em Remarks :
1.63 kristaps 897: this macro is not implemented in
898: .Xr groff 1 .
1.64 kristaps 899: .
1.63 kristaps 900: .Ss \&%D
901: Publication date of an
902: .Sx \&Rs
1.72 kristaps 903: block. This should follow the reduced or canonical form syntax
904: described in
1.63 kristaps 905: .Sx Dates .
1.64 kristaps 906: .
1.63 kristaps 907: .Ss \&%I
908: Publisher or issuer name of an
909: .Sx \&Rs
910: block.
1.64 kristaps 911: .
1.63 kristaps 912: .Ss \&%J
913: Journal name of an
914: .Sx \&Rs
915: block.
1.64 kristaps 916: .
1.63 kristaps 917: .Ss \&%N
918: Issue number (usually for journals) of an
919: .Sx \&Rs
920: block.
1.64 kristaps 921: .
1.63 kristaps 922: .Ss \&%O
923: Optional information of an
924: .Sx \&Rs
925: block.
1.64 kristaps 926: .
1.63 kristaps 927: .Ss \&%P
928: Book or journal page number of an
929: .Sx \&Rs
930: block.
1.64 kristaps 931: .
1.63 kristaps 932: .Ss \&%Q
933: Institutional author (school, government, etc.) of an
934: .Sx \&Rs
935: block. Multiple institutional authors should each be accorded their own
1.64 kristaps 936: .Sx \&%Q
1.63 kristaps 937: line.
1.64 kristaps 938: .
1.63 kristaps 939: .Ss \&%R
940: Technical report name of an
941: .Sx \&Rs
942: block.
1.64 kristaps 943: .
1.63 kristaps 944: .Ss \&%T
945: Article title of an
946: .Sx \&Rs
947: block. This macro may also be used in a non-bibliographical context
948: when referring to article titles.
1.64 kristaps 949: .
1.69 kristaps 950: .Ss \&%U
1.70 kristaps 951: URI of reference document.
1.69 kristaps 952: .
1.63 kristaps 953: .Ss \&%V
954: Volume number of an
955: .Sx \&Rs
956: block.
1.64 kristaps 957: .
1.63 kristaps 958: .Ss \&Ac
959: Closes an
960: .Sx \&Ao
961: block. Does not have any tail arguments.
1.64 kristaps 962: .
1.63 kristaps 963: .Ss \&Ad
964: Address construct: usually in the context of an computational address in
965: memory, not a physical (post) address.
966: .Pp
1.64 kristaps 967: Examples:
1.63 kristaps 968: .Bd -literal -offset indent
969: \&.Ad [0,$]
970: \&.Ad 0x00000000
971: .Ed
1.64 kristaps 972: .
1.63 kristaps 973: .Ss \&An
1.64 kristaps 974: Author name. This macro may alternatively accepts the following
975: arguments, although these may not be specified along with a parameter:
976: .Bl -tag -width 12n -offset indent
977: .It Fl split
1.66 kristaps 978: Renders a line break before each author listing.
1.64 kristaps 979: .It Fl nosplit
980: The opposite of
981: .Fl split .
982: .El
983: .Pp
984: In the AUTHORS section, the default is not to split the first author
985: listing, but all subsequent author listings, whether or not they're
986: interspersed by other macros or text, are split. Thus, specifying
987: .Fl split
988: will cause the first listing also to be split. If not in the AUTHORS
989: section, the default is not to split.
990: .Pp
991: Examples:
992: .Bd -literal -offset indent
993: \&.An -nosplit
994: \&.An J. E. Hopcraft ,
995: \&.An J. D. Ullman .
996: .Ed
997: .Pp
998: .Em Remarks :
999: the effects of
1000: .Fl split
1001: or
1002: .Fl nosplit
1003: are re-set when entering the AUTHORS section, so if one specifies
1004: .Sx \&An Fl nosplit
1005: in the general document body, it must be re-specified in the AUTHORS
1006: section.
1007: .
1.63 kristaps 1008: .Ss \&Ao
1009: Begins a block enclosed by angled brackets. Does not have any head
1010: arguments.
1011: .Pp
1.64 kristaps 1012: Examples:
1.63 kristaps 1013: .Bd -literal -offset indent
1014: \&.Fl -key= Ns Ao Ar val Ac
1015: .Ed
1016: .Pp
1.64 kristaps 1017: See also
1018: .Sx \&Aq .
1019: .
1.63 kristaps 1020: .Ss \&Ap
1.64 kristaps 1021: Inserts an apostrophe without any surrounding white-space. This is
1022: generally used as a grammatic device when referring to the verb form of
1023: a function:
1024: .Bd -literal -offset indent
1025: \&.Fn execve Ap d
1026: .Ed
1027: .
1.63 kristaps 1028: .Ss \&Aq
1.64 kristaps 1029: Encloses its arguments in angled brackets.
1030: .Pp
1031: Examples:
1032: .Bd -literal -offset indent
1033: \&.Fl -key= Ns Aq Ar val
1034: .Ed
1035: .Pp
1036: .Em Remarks :
1037: this macro is often abused for rendering URIs, which should instead use
1038: .Sx \&Lk
1039: or
1040: .Sx \&Mt ,
1041: or to note pre-processor
1042: .Dq Li #include
1043: statements, which should use
1044: .Sx \&In .
1045: .Pp
1046: See also
1047: .Sx \&Ao .
1048: .
1.63 kristaps 1049: .Ss \&Ar
1.66 kristaps 1050: Command arguments. If an argument is not provided, the string
1.64 kristaps 1051: .Dq file ...
1.66 kristaps 1052: is used as a default.
1.64 kristaps 1053: .Pp
1054: Examples:
1055: .Bd -literal -offset indent
1056: \&.Fl o Ns Ar file1
1057: \&.Ar
1058: \&.Ar arg1 , arg2 .
1059: .Ed
1060: .
1.63 kristaps 1061: .Ss \&At
1.64 kristaps 1062: Formats an AT&T version. Accepts at most one parameter:
1063: .Bl -tag -width 12n -offset indent
1064: .It Cm v[1-7] | 32v
1065: A version of
1066: .At .
1067: .It Cm V[.[1-4]]?
1068: A system version of
1069: .At .
1070: .El
1071: .Pp
1072: Note that these parameters do not begin with a hyphen.
1073: .Pp
1074: Examples:
1075: .Bd -literal -offset indent
1076: \&.At
1077: \&.At V.1
1078: .Ed
1.65 kristaps 1079: .Pp
1080: See also
1.66 kristaps 1081: .Sx \&Bsx ,
1.65 kristaps 1082: .Sx \&Bx ,
1.66 kristaps 1083: .Sx \&Dx ,
1.65 kristaps 1084: .Sx \&Fx ,
1085: .Sx \&Nx ,
1086: .Sx \&Ox ,
1087: and
1088: .Sx \&Ux .
1.64 kristaps 1089: .
1.63 kristaps 1090: .Ss \&Bc
1.64 kristaps 1091: Closes a
1092: .Sx \&Bo
1093: block. Does not have any tail arguments.
1094: .
1.63 kristaps 1095: .Ss \&Bd
1.64 kristaps 1096: Begins a display block. A display is collection of macros or text which
1097: may be collectively offset or justified in a manner different from that
1098: of the enclosing context. By default, the block is preceded by a
1099: vertical space.
1100: .Pp
1101: Each display is associated with a type, which must be one of the
1102: following arguments:
1103: .Bl -tag -width 12n -offset indent
1104: .It Fl ragged
1105: Only left-justify the block.
1106: .It Fl unfilled
1107: Do not justify the block at all.
1108: .It Fl filled
1109: Left- and right-justify the block.
1110: .It Fl literal
1111: Alias for
1112: .Fl unfilled .
1113: .It Fl centered
1114: Centre-justify each line.
1115: .El
1116: .Pp
1117: The type must be provided first. Secondary arguments are as follows:
1118: .Bl -tag -width 12n -offset indent
1119: .It Fl offset Ar width
1120: Offset by the value of
1121: .Ar width ,
1122: which is interpreted as one of the following, specified in order:
1123: .Bl -item
1124: .It
1125: As one of the pre-defined strings
1126: .Ar indent ,
1127: the width of standard indentation;
1128: .Ar indent-two ,
1129: twice
1130: .Ar indent ;
1131: .Ar left ,
1132: which has no effect ;
1133: .Ar right ,
1134: which justifies to the right margin; and
1135: .Ar center ,
1136: which aligns around an imagined centre axis.
1137: .It
1138: As a precalculated width for a named macro. The most popular is the
1139: imaginary macro
1.67 kristaps 1140: .Ar \&Ds ,
1.64 kristaps 1141: which resolves to
1142: .Ar 6n .
1143: .It
1144: As a scaling unit following the syntax described in
1145: .Sx Scaling Widths .
1146: .It
1147: As the calculated string length of the opaque string.
1148: .El
1149: .Pp
1150: If unset, it will revert to the value of
1151: .Ar 8n
1152: as described in
1153: .Sx Scaling Widths .
1154: .It Fl compact
1155: Do not assert a vertical space before the block.
1156: .It Fl file Ar file
1157: Prepend the file
1158: .Ar file
1159: before any text or macros within the block.
1160: .El
1161: .Pp
1162: Examples:
1163: .Bd -literal -offset indent
1164: \&.Bd \-unfilled \-offset two-indent \-compact
1.65 kristaps 1165: Hello world.
1.64 kristaps 1166: \&.Ed
1167: .Ed
1.66 kristaps 1168: .Pp
1169: See also
1170: .Sx \&D1
1171: and
1172: .Sx \&Dl .
1.64 kristaps 1173: .
1.63 kristaps 1174: .Ss \&Bf
1175: .Ss \&Bk
1176: .Ss \&Bl
1.80 kristaps 1177: .\" Begins a list composed of one or more list entries. A list entry is
1178: .\" specified by the
1179: .\" .Sx \&It
1180: .\" macro, which consists of a head and optional body. By default, a list
1181: .\" is preceded by a blank line. A list must specify one of the following
1182: .\" list types:
1183: .\" .Bl -tag -width 12n
1184: .\" .It Fl bullet
1185: .\" A list offset by a bullet. The head of list entries must be empty.
1186: .\" List entry bodies are justified after the bullet.
1187: .\" .It Fl column
1188: .\" A columnated list. The number of columns is specified as arguments to
1189: .\" the
1190: .\" .Sx \&Bl
1191: .\" macro (the deprecated form of following the invocation of
1192: .\" .Fl column
1193: .\" is also accepted). Arguments dictate the width of columns specified in
1194: .\" list entries. List entry bodies must be left empty. Columns specified
1195: .\" in the list entry head are justified to their position in the sequence
1196: .\" of columns.
1197: .\" .It Fl dash
1198: .\" A list offset by a dash (hyphen). The head of list entries must be
1199: .\" empty. List entry bodies are justified past the dash.
1200: .\" .It Fl diag
1201: .\" Like
1202: .\" .Fl inset
1203: .\" lists, but with additional formatting to the head.
1204: .\" .It Fl enum
1205: .\" A list offset by a number indicating list entry position. The head of
1206: .\" list entries must be empty. List entry bodies are justified past the
1207: .\" enumeration.
1208: .\" .It Fl hang
1209: .\" Like
1210: .\" .Fl tag ,
1211: .\" but instead of list bodies justifying to the head on the first line,
1212: .\" they trail the head text.
1213: .\" .It Fl hyphen
1214: .\" Synonym for
1215: .\" .Fl dash .
1216: .\" .It Fl inset
1217: .\" Like
1218: .\" .Fl tag ,
1219: .\" but list entry bodies aren't justified.
1220: .\" .It Fl item
1221: .\" An un-justified list. This produces blocks of text.
1222: .\" .It Fl ohang
1223: .\" List bodies are placed on the line following the head.
1224: .\" .It Fl tag
1225: .\" A list offset by list entry heads. List entry bodies are justified
1226: .\" after the head.
1227: .\" .El
1228: .\" .Pp
1229: .\" More...
1230: .\" .
1.63 kristaps 1231: .Ss \&Bo
1.65 kristaps 1232: Begins a block enclosed by square brackets. Does not have any head
1233: arguments.
1234: .Pp
1235: Examples:
1236: .Bd -literal -offset indent
1237: \&.Bo 1 ,
1238: \&.Dv BUFSIZ Bc
1239: .Ed
1240: .Pp
1241: See also
1242: .Sx \&Bq .
1243: .
1.63 kristaps 1244: .Ss \&Bq
1.65 kristaps 1245: Encloses its arguments in square brackets.
1246: .Pp
1247: Examples:
1248: .Bd -literal -offset indent
1249: \&.Bq 1 , Dv BUFSIZ
1250: .Ed
1251: .Pp
1252: .Em Remarks :
1253: this macro is sometimes abused to emulate optional arguments for
1254: commands; the correct macros to use for this purpose are
1255: .Sx \&Op ,
1256: .Sx \&Oo ,
1257: and
1258: .Sx \&Oc .
1259: .Pp
1260: See also
1261: .Sx \&Bo .
1262: .
1.63 kristaps 1263: .Ss \&Brc
1.65 kristaps 1264: Closes a
1265: .Sx \&Bro
1266: block. Does not have any tail arguments.
1267: .
1.63 kristaps 1268: .Ss \&Bro
1.65 kristaps 1269: Begins a block enclosed by curly braces. Does not have any head
1270: arguments.
1271: .Pp
1272: Examples:
1273: .Bd -literal -offset indent
1274: \&.Bro 1 , ... ,
1275: \&.Va n Brc
1276: .Ed
1277: .Pp
1278: See also
1279: .Sx \&Brq .
1280: .
1.63 kristaps 1281: .Ss \&Brq
1.65 kristaps 1282: Encloses its arguments in curly braces.
1283: .Pp
1284: Examples:
1285: .Bd -literal -offset indent
1286: \&.Brq 1 , ... , Va n
1287: .Ed
1288: .Pp
1289: See also
1290: .Sx \&Bro .
1291: .
1.63 kristaps 1292: .Ss \&Bsx
1.65 kristaps 1293: Format the BSD/OS version provided as an argument, or a default value if
1294: no argument is provided.
1295: .Pp
1296: Examples:
1297: .Bd -literal -offset indent
1298: \&.Bsx 1.0
1299: \&.Bsx
1300: .Ed
1301: .Pp
1302: See also
1303: .Sx \&At ,
1304: .Sx \&Bx ,
1.66 kristaps 1305: .Sx \&Dx ,
1.65 kristaps 1306: .Sx \&Fx ,
1307: .Sx \&Nx ,
1308: .Sx \&Ox ,
1309: and
1310: .Sx \&Ux .
1311: .
1.63 kristaps 1312: .Ss \&Bt
1.66 kristaps 1313: Prints
1314: .Dq is currently in beta test.
1315: .
1.63 kristaps 1316: .Ss \&Bx
1.65 kristaps 1317: Format the BSD version provided as an argument, or a default value if no
1318: argument is provided.
1319: .Pp
1320: Examples:
1321: .Bd -literal -offset indent
1322: \&.Bx 4.4
1323: \&.Bx
1324: .Ed
1325: .Pp
1326: See also
1327: .Sx \&At ,
1328: .Sx \&Bsx ,
1.66 kristaps 1329: .Sx \&Dx ,
1.65 kristaps 1330: .Sx \&Fx ,
1331: .Sx \&Nx ,
1332: .Sx \&Ox ,
1333: and
1334: .Sx \&Ux .
1335: .
1.63 kristaps 1336: .Ss \&Cd
1.66 kristaps 1337: Configuration declaration (suggested for use only in section four
1338: manuals). This denotes strings accepted by
1339: .Xr config 8 .
1340: .Pp
1341: Examples:
1342: .Bd -literal -offset indent
1343: \&.Cd device le0 at scode?
1344: .Ed
1345: .Pp
1346: .Em Remarks :
1347: this macro is commonly abused by using quoted literals to retain
1348: white-space and align consecutive
1349: .Sx \&Cd
1350: declarations. This practise is discouraged.
1351: .
1.63 kristaps 1352: .Ss \&Cm
1.66 kristaps 1353: Command modifiers. Useful when specifying configuration options or
1354: keys.
1355: .Pp
1356: Examples:
1357: .Bd -literal -offset indent
1358: \&.Cm ControlPath
1359: \&.Cm ControlMaster
1360: .Ed
1361: .Pp
1362: See also
1363: .Sx \&Fl .
1364: .
1.63 kristaps 1365: .Ss \&D1
1.66 kristaps 1366: One-line indented display. This is formatted by the default rules and
1367: is useful for simple indented statements. It is followed by a newline.
1368: .Pp
1369: Examples:
1370: .Bd -literal -offset indent
1371: \&.D1 Fl abcdefgh
1372: .Ed
1373: .Pp
1374: See also
1375: .Sx \&Bd
1376: and
1377: .Sx \&Dl .
1378: .
1.63 kristaps 1379: .Ss \&Db
1380: .Ss \&Dc
1.66 kristaps 1381: Closes a
1382: .Sx \&Do
1383: block. Does not have any tail arguments.
1384: .
1.63 kristaps 1385: .Ss \&Dd
1.66 kristaps 1386: Document date. This is the mandatory first macro of any
1387: .Nm
1388: manual. Its calling syntax is as follows:
1389: .Pp
1390: .D1 \. Ns Sx \&Dd Cm date
1391: .Pp
1392: The
1393: .Cm date
1394: field may be either
1395: .Ar $\&Mdocdate$ ,
1396: which signifies the current manual revision date dictated by
1.72 kristaps 1397: .Xr cvs 1 ,
1.66 kristaps 1398: or instead a valid canonical date as specified by
1399: .Sx Dates .
1.72 kristaps 1400: If a date does not conform, the current date is used instead.
1.66 kristaps 1401: .Pp
1402: Examples:
1403: .Bd -literal -offset indent
1404: \&.Dd $\&Mdocdate$
1405: \&.Dd $\&Mdocdate: July 21 2007$
1406: \&.Dd July 21, 2007
1407: .Ed
1408: .Pp
1409: See also
1410: .Sx \&Dt
1411: and
1412: .Sx \&Os .
1413: .
1.63 kristaps 1414: .Ss \&Dl
1.66 kristaps 1415: One-line intended display. This is formatted as literal text and is
1416: useful for commands and invocations. It is followed by a newline.
1417: .Pp
1418: Examples:
1419: .Bd -literal -offset indent
1420: \&.Dl % mandoc mdoc.7 | less
1421: .Ed
1422: .Pp
1423: See also
1424: .Sx \&Bd
1425: and
1426: .Sx \&D1 .
1427: .
1.63 kristaps 1428: .Ss \&Do
1.66 kristaps 1429: Begins a block enclosed by double quotes. Does not have any head
1430: arguments.
1431: .Pp
1432: Examples:
1433: .Bd -literal -offset indent
1434: \&.D1 Do April is the cruellest month Dc \e(em T.S. Eliot
1435: .Ed
1436: .Pp
1437: See also
1438: .Sx \&Dq .
1439: .
1.63 kristaps 1440: .Ss \&Dq
1.66 kristaps 1441: Encloses its arguments in double quotes.
1442: .Pp
1443: Examples:
1444: .Bd -literal -offset indent
1445: \&.Dq April is the cruellest month
1446: \e(em T.S. Eliot
1447: .Ed
1448: .Pp
1449: See also
1450: .Sx \&Do .
1451: .
1.63 kristaps 1452: .Ss \&Dt
1.66 kristaps 1453: Document title. This is the mandatory second macro of any
1454: .Nm
1455: file. Its calling syntax is as follows:
1456: .Pp
1457: .D1 \. Ns Sx \&Dt Cm title section Op Cm volume | arch
1458: .Pp
1459: Its arguments are as follows:
1460: .Bl -tag -width Ds -offset Ds
1461: .It Cm title
1462: The document's title (name). This should be capitalised and is
1463: required.
1464: .It Cm section
1465: The manual section. This may be one of
1466: .Ar 1
1467: .Pq utilities ,
1468: .Ar 2
1469: .Pq system calls ,
1470: .Ar 3
1471: .Pq libraries ,
1472: .Ar 3p
1473: .Pq Perl libraries ,
1474: .Ar 4
1475: .Pq devices ,
1476: .Ar 5
1477: .Pq file formats ,
1478: .Ar 6
1479: .Pq games ,
1480: .Ar 7
1481: .Pq miscellaneous ,
1482: .Ar 8
1483: .Pq system utilities ,
1484: .Ar 9
1485: .Pq kernel functions ,
1486: .Ar X11
1487: .Pq X Window System ,
1488: .Ar X11R6
1489: .Pq X Window System ,
1490: .Ar unass
1491: .Pq unassociated ,
1492: .Ar local
1493: .Pq local system ,
1494: .Ar draft
1495: .Pq draft manual ,
1496: or
1497: .Ar paper
1498: .Pq paper .
1499: It is also required and should correspond to the manual's filename
1500: suffix.
1501: .It Cm volume
1502: This overrides the volume inferred from
1503: .Ar section .
1504: This field is optional, and if specified, must be one of
1505: .Ar USD
1506: .Pq users' supplementary documents ,
1507: .Ar PS1
1508: .Pq programmers' supplementary documents ,
1509: .Ar AMD
1510: .Pq administrators' supplementary documents ,
1511: .Ar SMM
1512: .Pq system managers' manuals ,
1513: .Ar URM
1514: .Pq users' reference manuals ,
1515: .Ar PRM
1516: .Pq programmers' reference manuals ,
1517: .Ar KM
1518: .Pq kernel manuals ,
1519: .Ar IND
1520: .Pq master index ,
1521: .Ar MMI
1522: .Pq master index ,
1523: .Ar LOCAL
1524: .Pq local manuals ,
1525: .Ar LOC
1526: .Pq local manuals ,
1527: or
1528: .Ar CON
1529: .Pq contributed manuals .
1530: .It Cm arch
1531: This specifies a specific relevant architecture. If
1532: .Cm volume
1533: is not provided, it may be used in its place, else it may be used
1534: subsequent that. It, too, is optional. It must be one of
1535: .Ar alpha ,
1536: .Ar amd64 ,
1537: .Ar amiga ,
1538: .Ar arc ,
1539: .Ar arm ,
1540: .Ar armish ,
1541: .Ar aviion ,
1542: .Ar hp300 ,
1543: .Ar hppa ,
1544: .Ar hppa64 ,
1545: .Ar i386 ,
1546: .Ar landisk ,
1547: .Ar luna88k ,
1548: .Ar mac68k ,
1549: .Ar macppc ,
1550: .Ar mvme68k ,
1551: .Ar mvme88k ,
1552: .Ar mvmeppc ,
1553: .Ar pmax ,
1554: .Ar sgi ,
1555: .Ar socppc ,
1556: .Ar sparc ,
1557: .Ar sparc64 ,
1558: .Ar sun3 ,
1559: .Ar vax ,
1560: or
1561: .Ar zaurus .
1562: .El
1563: .Pp
1564: Examples:
1565: .Bd -literal -offset indent
1566: \&.Dt FOO 1
1567: \&.Dt FOO 4 KM
1568: \&.Dt FOO 9 i386
1569: \&.Dt FOO 9 KM i386
1570: .Ed
1571: .Pp
1572: See also
1573: .Sx \&Dd
1574: and
1575: .Sx \&Os .
1576: .
1.63 kristaps 1577: .Ss \&Dv
1.66 kristaps 1578: Defined variables such as preprocessor constants.
1579: .Pp
1580: Examples:
1581: .Bd -literal -offset indent
1582: \&.Dv BUFSIZ
1583: \&.Dv STDOUT_FILENO
1584: .Ed
1585: .Pp
1586: See also
1587: .Sx \&Er .
1588: .
1.63 kristaps 1589: .Ss \&Dx
1.71 kristaps 1590: Format the DragonFly BSD version provided as an argument, or a default
1.66 kristaps 1591: value if no argument is provided.
1592: .Pp
1593: Examples:
1594: .Bd -literal -offset indent
1595: \&.Dx 2.4.1
1596: \&.Dx
1597: .Ed
1598: .Pp
1599: See also
1600: .Sx \&At ,
1601: .Sx \&Bsx ,
1602: .Sx \&Bx ,
1603: .Sx \&Fx ,
1604: .Sx \&Nx ,
1605: .Sx \&Ox ,
1606: and
1607: .Sx \&Ux .
1608: .
1.63 kristaps 1609: .Ss \&Ec
1610: .Ss \&Ed
1611: .Ss \&Ef
1612: .Ss \&Ek
1613: .Ss \&El
1614: .Ss \&Em
1.66 kristaps 1615: Denotes text that should be emphasised. Note that this is a
1616: presentation term and should not be used for stylistically decorating
1617: technical terms.
1618: .Pp
1619: Examples:
1620: .Bd -literal -offset indent
1621: \&.Ed Warnings!
1622: \&.Ed Remarks :
1623: .Ed
1624: .
1.63 kristaps 1625: .Ss \&En
1626: .Ss \&Eo
1627: .Ss \&Er
1.66 kristaps 1628: Error constants (suggested for use only in section two manuals).
1629: .Pp
1630: Examples:
1631: .Bd -literal -offset indent
1632: \&.Er EPERM
1633: \&.Er ENOENT
1634: .Ed
1635: .Pp
1636: See also
1637: .Sx \&Dv .
1638: .
1.63 kristaps 1639: .Ss \&Es
1.66 kristaps 1640: .
1.63 kristaps 1641: .Ss \&Ev
1.66 kristaps 1642: Environmental variables such as those specified in
1643: .Xr environ 7 .
1644: .Pp
1645: Examples:
1646: .Bd -literal -offset indent
1647: \&.Ev DISPLAY
1648: \&.Ev PATH
1649: .Ed
1650: .
1.63 kristaps 1651: .Ss \&Ex
1.66 kristaps 1652: Inserts text regarding a utility's exit values. This macro must have
1653: first the
1654: .Fl std
1655: argument specified, then an optional
1656: .Ar utility .
1657: If
1658: .Ar utility
1659: is not provided, the document's name as stipulated in
1660: .Sx \&Nm
1661: is provided.
1.63 kristaps 1662: .Ss \&Fa
1663: .Ss \&Fc
1664: .Ss \&Fd
1665: .Ss \&Fl
1.79 kristaps 1666: Command-line flag. Used when listing arguments to command-line
1667: utilities. Prints a fixed-width hyphen
1668: .Sq \-
1669: before each delimited argument. If no arguments are provided, a hyphen
1670: is still printed.
1671: .Pp
1672: Examples:
1673: .Bd -literal -offset indent
1674: \&.Fl a b c
1675: \&.Fl
1676: \&.Op Fl o Ns Ar file
1677: .Ed
1678: .Pp
1679: See also
1680: .Sx \&Cm .
1681: .
1.63 kristaps 1682: .Ss \&Fn
1683: .Ss \&Fo
1684: .Ss \&Fr
1685: .Ss \&Ft
1686: .Ss \&Fx
1.65 kristaps 1687: Format the FreeBSD version provided as an argument, or a default value
1688: if no argument is provided.
1689: .Pp
1690: Examples:
1691: .Bd -literal -offset indent
1692: \&.Fx 7.1
1693: \&.Fx
1694: .Ed
1695: .Pp
1696: See also
1697: .Sx \&At ,
1.66 kristaps 1698: .Sx \&Bsx ,
1.65 kristaps 1699: .Sx \&Bx ,
1.66 kristaps 1700: .Sx \&Dx ,
1.65 kristaps 1701: .Sx \&Nx ,
1702: .Sx \&Ox ,
1703: and
1704: .Sx \&Ux .
1705: .
1.63 kristaps 1706: .Ss \&Hf
1707: .Ss \&Ic
1708: .Ss \&In
1709: .Ss \&It
1710: .Ss \&Lb
1711: .Ss \&Li
1712: .Ss \&Lk
1.70 kristaps 1713: Format a hyperlink. The calling syntax is as follows:
1714: .Pp
1715: .D1 \. Ns Sx \&Lk Cm uri Op Cm name
1716: .Pp
1717: Examples:
1718: .Bd -literal -offset indent
1719: \&.Lk http://bsd.lv "The BSD.lv Project"
1720: \&.Lk http://bsd.lv
1721: .Ed
1722: .Pp
1723: See also
1724: .Sx \&Mt .
1725: .
1.63 kristaps 1726: .Ss \&Lp
1727: .Ss \&Ms
1728: .Ss \&Mt
1729: .Ss \&Nd
1730: .Ss \&Nm
1731: .Ss \&No
1732: .Ss \&Ns
1733: .Ss \&Nx
1.65 kristaps 1734: Format the NetBSD version provided as an argument, or a default value if
1735: no argument is provided.
1736: .Pp
1737: Examples:
1738: .Bd -literal -offset indent
1739: \&.Nx 5.01
1740: \&.Nx
1741: .Ed
1742: .Pp
1743: See also
1744: .Sx \&At ,
1.66 kristaps 1745: .Sx \&Bsx ,
1.65 kristaps 1746: .Sx \&Bx ,
1.66 kristaps 1747: .Sx \&Dx ,
1.65 kristaps 1748: .Sx \&Fx ,
1749: .Sx \&Ox ,
1750: and
1751: .Sx \&Ux .
1752: .
1.63 kristaps 1753: .Ss \&Oc
1754: .Ss \&Oo
1755: .Ss \&Op
1756: .Ss \&Os
1.66 kristaps 1757: Document operating system version. This is the mandatory third macro of
1758: any
1759: .Nm
1760: file. Its calling syntax is as follows:
1761: .Pp
1762: .D1 \. Ns Sx \&Os Op Cm system
1763: .Pp
1764: The optional
1765: .Cm system
1766: parameter specifies the relevant operating system or environment. Left
1767: unspecified, it defaults to the local operating system version. This is
1768: the suggested form.
1769: .Pp
1770: Examples:
1771: .Bd -literal -offset indent
1772: \&.Os
1773: \&.Os KTH/CSC/TCS
1774: \&.Os BSD 4.3
1775: .Ed
1776: .Pp
1777: See also
1778: .Sx \&Dd
1779: and
1780: .Sx \&Dt .
1781: .
1.63 kristaps 1782: .Ss \&Ot
1.66 kristaps 1783: Unknown usage.
1784: .Pp
1785: .Em Remarks :
1786: this macro has been deprecated.
1787: .
1.63 kristaps 1788: .Ss \&Ox
1.65 kristaps 1789: Format the OpenBSD version provided as an argument, or a default value
1790: if no argument is provided.
1791: .Pp
1792: Examples:
1793: .Bd -literal -offset indent
1794: \&.Ox 4.5
1795: \&.Ox
1796: .Ed
1797: .Pp
1798: See also
1799: .Sx \&At ,
1800: .Sx \&Bsx ,
1801: .Sx \&Bx ,
1.66 kristaps 1802: .Sx \&Dx ,
1.65 kristaps 1803: .Sx \&Fx ,
1804: .Sx \&Nx ,
1805: and
1806: .Sx \&Ux .
1807: .
1.63 kristaps 1808: .Ss \&Pa
1809: .Ss \&Pc
1810: .Ss \&Pf
1811: .Ss \&Po
1812: .Ss \&Pp
1813: .Ss \&Pq
1814: .Ss \&Qc
1815: .Ss \&Ql
1816: .Ss \&Qo
1817: .Ss \&Qq
1.64 kristaps 1818: .
1.63 kristaps 1819: .Ss \&Re
1820: Closes a
1821: .Sx \&Rs
1822: block. Does not have any tail arguments.
1.64 kristaps 1823: .
1.63 kristaps 1824: .Ss \&Rs
1825: Begins a bibliographic
1826: .Pq Dq reference
1.68 kristaps 1827: block. Does not have any head arguments. The block macro may only
1.63 kristaps 1828: contain
1829: .Sx \&%A ,
1830: .Sx \&%B ,
1831: .Sx \&%C ,
1832: .Sx \&%D ,
1833: .Sx \&%I ,
1834: .Sx \&%J ,
1835: .Sx \&%N ,
1836: .Sx \&%O ,
1837: .Sx \&%P ,
1838: .Sx \&%Q ,
1839: .Sx \&%R ,
1840: .Sx \&%T ,
1841: and
1842: .Sx \&%V
1843: child macros (at least one must be specified).
1844: .Pp
1.64 kristaps 1845: Examples:
1.63 kristaps 1846: .Bd -literal -offset indent
1847: \&.Rs
1848: \&.%A J. E. Hopcroft
1849: \&.%A J. D. Ullman
1850: \&.%B Introduction to Automata Theory, Languages, and Computation
1851: \&.%I Addison-Wesley
1852: \&.%C Reading, Massachusettes
1853: \&.%D 1979
1854: \&.Re
1855: .Ed
1856: .Pp
1857: If an
1858: .Sx \&Rs
1859: block is used within a SEE ALSO section, a vertical space is asserted
1860: before the rendered output, else the block continues on the current
1861: line.
1.64 kristaps 1862: .
1.63 kristaps 1863: .Ss \&Rv
1864: .Ss \&Sc
1865: .Ss \&Sh
1866: .Ss \&Sm
1867: .Ss \&So
1868: .Ss \&Sq
1869: .Ss \&Ss
1870: .Ss \&St
1871: .Ss \&Sx
1872: .Ss \&Sy
1873: .Ss \&Tn
1874: .Ss \&Ud
1875: .Ss \&Ux
1.65 kristaps 1876: Format the UNIX name. Accepts no argument.
1877: .Pp
1878: Examples:
1879: .Bd -literal -offset indent
1880: \&.Ux
1881: .Ed
1882: .Pp
1883: See also
1884: .Sx \&At ,
1.66 kristaps 1885: .Sx \&Bsx ,
1.65 kristaps 1886: .Sx \&Bx ,
1.66 kristaps 1887: .Sx \&Dx ,
1.65 kristaps 1888: .Sx \&Fx ,
1889: .Sx \&Nx ,
1890: and
1891: .Sx \&Ox .
1892: .
1.63 kristaps 1893: .Ss \&Va
1894: .Ss \&Vt
1895: .Ss \&Xc
1896: .Ss \&Xo
1897: .Ss \&Xr
1898: .Ss \&br
1899: .Ss \&sp
1900: .
1901: .
1.4 kristaps 1902: .Sh COMPATIBILITY
1.28 kristaps 1903: This section documents compatibility with other roff implementations, at
1.50 kristaps 1904: this time limited to
1.57 kristaps 1905: .Xr groff 1 .
1.50 kristaps 1906: The term
1.57 kristaps 1907: .Qq historic groff
1.50 kristaps 1908: refers to those versions before the
1.57 kristaps 1909: .Pa doc.tmac
1.50 kristaps 1910: file re-write
1.57 kristaps 1911: .Pq somewhere between 1.15 and 1.19 .
1912: .
1913: .Pp
1914: .Bl -dash -compact
1915: .It
1.81 ! kristaps 1916: The comment syntax
! 1917: .Sq \e."
! 1918: is no longer accepted.
! 1919: .It
1.80 kristaps 1920: In
1921: .Xr groff 1 ,
1922: the
1923: .Sx \&Pa
1924: macro does not format its arguments when used in the FILES section under
1925: certain list types. This irregular behaviour has been discontinued.
1926: .It
1.79 kristaps 1927: Historic
1928: .Xr groff 1
1929: does not print a dash for empty
1930: .Sx \&Fl
1931: arguments. This behaviour has been discontinued.
1932: .It
1.77 kristaps 1933: .Xr groff 1
1934: behaves strangely (even between versions) when specifying
1935: .Sq \ef
1936: escapes within line-macro scopes. These aberrations have been
1937: normalised.
1938: .It
1.61 kristaps 1939: Negative scaling units are now truncated to zero instead of creating
1940: interesting conditions, such as with
1.78 kristaps 1941: .Sx \&sp
1.80 kristaps 1942: .Fl 1i .
1.61 kristaps 1943: Furthermore, the
1944: .Sq f
1945: scaling unit, while accepted, is rendered as the default unit.
1946: .It
1.48 kristaps 1947: In quoted literals, groff allowed pair-wise double-quotes to produce a
1948: standalone double-quote in formatted output. This idiosyncratic
1949: behaviour is no longer applicable.
1.57 kristaps 1950: .It
1.64 kristaps 1951: Display types
1.78 kristaps 1952: .Sx \&Bd
1.77 kristaps 1953: .Fl center
1.64 kristaps 1954: and
1955: .Fl right
1956: are aliases for
1957: .Fl left .
1.50 kristaps 1958: The
1.64 kristaps 1959: .Fl file Ar file
1960: argument is ignored. Since text is not right-justified,
1961: .Fl ragged
1962: and
1963: .Fl filled
1964: are aliases, as are
1965: .Fl literal
1966: and
1967: .Fl unfilled .
1.57 kristaps 1968: .It
1.35 kristaps 1969: Blocks of whitespace are stripped from both macro and free-form text
1970: lines (except when in literal mode), while groff would retain whitespace
1971: in free-form text lines.
1.57 kristaps 1972: .It
1.28 kristaps 1973: Historic groff has many un-callable macros. Most of these (excluding
1974: some block-level macros) are now callable, conforming to the
1975: non-historic groff version.
1.57 kristaps 1976: .It
1.50 kristaps 1977: The vertical bar
1.57 kristaps 1978: .Sq \(ba
1.28 kristaps 1979: made historic groff
1.57 kristaps 1980: .Qq go orbital
1.28 kristaps 1981: but is a proper delimiter in this implementation.
1.57 kristaps 1982: .It
1.78 kristaps 1983: .Sx \&It
1.77 kristaps 1984: .Fl nested
1.28 kristaps 1985: is assumed for all lists (it wasn't in historic groff): any list may be
1986: nested and
1.64 kristaps 1987: .Fl enum
1.4 kristaps 1988: lists will restart the sequence only for the sub-list.
1.57 kristaps 1989: .It
1.4 kristaps 1990: Some manuals use
1.64 kristaps 1991: .Sx \&Li
1.4 kristaps 1992: incorrectly by following it with a reserved character and expecting the
1993: delimiter to render. This is not supported.
1.57 kristaps 1994: .It
1.50 kristaps 1995: In groff, the
1.64 kristaps 1996: .Sx \&Fo
1.41 kristaps 1997: macro only produces the first parameter. This is no longer the case.
1.57 kristaps 1998: .El
1.56 kristaps 1999: .
2000: .
1.2 kristaps 2001: .Sh SEE ALSO
1.57 kristaps 2002: .Xr mandoc 1 ,
2003: .Xr mandoc_char 7
1.56 kristaps 2004: .
2005: .
1.2 kristaps 2006: .Sh AUTHORS
2007: The
1.57 kristaps 2008: .Nm
1.50 kristaps 2009: reference was written by
1.57 kristaps 2010: .An Kristaps Dzonsons Aq kristaps@kth.se .
1.64 kristaps 2011: .\"
2012: .\" XXX: this really isn't the place for these caveats.
2013: .\" .
2014: .\" .
2015: .\" .Sh CAVEATS
2016: .\" There are many ambiguous parts of mdoc.
2017: .\" .
2018: .\" .Pp
2019: .\" .Bl -dash -compact
2020: .\" .It
2021: .\" .Sq \&Fa
2022: .\" should be
2023: .\" .Sq \&Va
2024: .\" as function arguments are variables.
2025: .\" .It
2026: .\" .Sq \&Ft
2027: .\" should be
2028: .\" .Sq \&Vt
2029: .\" as function return types are still types. Furthermore, the
2030: .\" .Sq \&Ft
2031: .\" should be removed and
2032: .\" .Sq \&Fo ,
2033: .\" which ostensibly follows it, should follow the same convention as
2034: .\" .Sq \&Va .
2035: .\" .It
2036: .\" .Sq \&Va
2037: .\" should formalise that only one or two arguments are acceptable: a
2038: .\" variable name and optional, preceding type.
2039: .\" .It
2040: .\" .Sq \&Fd
2041: .\" is ambiguous. It's commonly used to indicate an include file in the
2042: .\" synopsis section.
2043: .\" .Sq \&In
2044: .\" should be used, instead.
2045: .\" .It
2046: .\" Only the
2047: .\" .Sq \-literal
2048: .\" argument to
2049: .\" .Sq \&Bd
2050: .\" makes sense. The remaining ones should be removed.
2051: .\" .It
2052: .\" The
2053: .\" .Sq \&Xo
2054: .\" and
2055: .\" .Sq \&Xc
2056: .\" macros should be deprecated.
2057: .\" .It
2058: .\" The
2059: .\" .Sq \&Dt
2060: .\" macro lacks clarity. It should be absolutely clear which title will
2061: .\" render when formatting the manual page.
2062: .\" .It
2063: .\" A
2064: .\" .Sq \&Lx
2065: .\" should be provided for Linux (\(`a la
2066: .\" .Sq \&Ox ,
2067: .\" .Sq \&Nx
2068: .\" etc.).
2069: .\" .It
2070: .\" There's no way to refer to references in
2071: .\" .Sq \&Rs/Re
2072: .\" blocks.
2073: .\" .It
2074: .\" The \-split and \-nosplit dictates via
2075: .\" .Sq \&An
2076: .\" are re-set when entering and leaving the AUTHORS section.
2077: .\" .El
2078: .\" .
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