Annotation of mandoc/mandoc.1, Revision 1.96
1.96 ! kristaps 1: .\" $Id: mandoc.1,v 1.95 2011/10/06 22:29:12 kristaps Exp $
1.1 kristaps 2: .\"
1.92 schwarze 3: .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 4: .\"
5: .\" Permission to use, copy, modify, and distribute this software for any
1.16 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: .\"
1.16 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.
1.1 kristaps 16: .\"
1.96 ! kristaps 17: .Dd $Mdocdate: October 6 2011 $
1.14 kristaps 18: .Dt MANDOC 1
1.1 kristaps 19: .Os
20: .Sh NAME
21: .Nm mandoc
1.8 kristaps 22: .Nd format and display UNIX manuals
1.1 kristaps 23: .Sh SYNOPSIS
24: .Nm mandoc
1.58 kristaps 25: .Op Fl V
1.8 kristaps 26: .Op Fl m Ns Ar format
1.58 kristaps 27: .Op Fl O Ns Ar option
1.37 kristaps 28: .Op Fl T Ns Ar output
1.77 schwarze 29: .Op Fl W Ns Ar level
1.89 kristaps 30: .Op Ar
1.1 kristaps 31: .Sh DESCRIPTION
32: The
33: .Nm
1.26 kristaps 34: utility formats
1.8 kristaps 35: .Ux
1.57 kristaps 36: manual pages for display.
37: The arguments are as follows:
1.19 kristaps 38: .Bl -tag -width Ds
39: .It Fl m Ns Ar format
1.57 kristaps 40: Input format.
41: See
1.8 kristaps 42: .Sx Input Formats
1.57 kristaps 43: for available formats.
44: Defaults to
1.58 kristaps 45: .Fl m Ns Cm andoc .
46: .It Fl O Ns Ar option
1.57 kristaps 47: Comma-separated output options.
1.19 kristaps 48: .It Fl T Ns Ar output
1.57 kristaps 49: Output format.
50: See
1.1 kristaps 51: .Sx Output Formats
1.57 kristaps 52: for available formats.
53: Defaults to
1.58 kristaps 54: .Fl T Ns Cm ascii .
1.1 kristaps 55: .It Fl V
56: Print version and exit.
1.77 schwarze 57: .It Fl W Ns Ar level
58: Specify the minimum message
59: .Ar level
60: to be reported on the standard error output and to affect the exit status.
61: The
62: .Ar level
63: can be
64: .Cm warning ,
65: .Cm error ,
66: or
67: .Cm fatal .
68: The default is
69: .Fl W Ns Cm fatal ;
1.58 kristaps 70: .Fl W Ns Cm all
1.77 schwarze 71: is an alias for
72: .Fl W Ns Cm warning .
73: See
74: .Sx EXIT STATUS
75: and
76: .Sx DIAGNOSTICS
77: for details.
78: .Pp
79: The special option
80: .Fl W Ns Cm stop
81: tells
82: .Nm
83: to exit after parsing a file that causes warnings or errors of at least
84: the requested level.
85: No formatted output will be produced from that file.
86: If both a
87: .Ar level
88: and
89: .Cm stop
90: are requested, they can be joined with a comma, for example
91: .Fl W Ns Cm error , Ns Cm stop .
1.58 kristaps 92: .It Ar file
93: Read input from zero or more files.
1.57 kristaps 94: If unspecified, reads from stdin.
95: If multiple files are specified,
1.2 kristaps 96: .Nm
97: will halt with the first failed parse.
1.1 kristaps 98: .El
99: .Pp
1.26 kristaps 100: By default,
101: .Nm
102: reads
1.8 kristaps 103: .Xr mdoc 7
1.12 kristaps 104: or
105: .Xr man 7
1.8 kristaps 106: text from stdin, implying
1.58 kristaps 107: .Fl m Ns Cm andoc ,
1.48 kristaps 108: and produces
1.58 kristaps 109: .Fl T Ns Cm ascii
1.48 kristaps 110: output.
1.8 kristaps 111: .Ss Input Formats
112: The
113: .Nm
114: utility accepts
115: .Xr mdoc 7
116: and
117: .Xr man 7
118: input with
1.58 kristaps 119: .Fl m Ns Cm doc
1.8 kristaps 120: and
1.58 kristaps 121: .Fl m Ns Cm an ,
1.57 kristaps 122: respectively.
123: The
1.8 kristaps 124: .Xr mdoc 7
125: format is
126: .Em strongly
1.26 kristaps 127: recommended;
1.8 kristaps 128: .Xr man 7
129: should only be used for legacy manuals.
1.11 kristaps 130: .Pp
1.12 kristaps 131: A third option,
1.58 kristaps 132: .Fl m Ns Cm andoc ,
1.13 kristaps 133: which is also the default, determines encoding on-the-fly: if the first
1.26 kristaps 134: non-comment macro is
1.27 kristaps 135: .Sq \&Dd
1.13 kristaps 136: or
1.27 kristaps 137: .Sq \&Dt ,
1.26 kristaps 138: the
1.13 kristaps 139: .Xr mdoc 7
140: parser is used; otherwise, the
141: .Xr man 7
142: parser is used.
143: .Pp
144: If multiple
1.26 kristaps 145: files are specified with
1.58 kristaps 146: .Fl m Ns Cm andoc ,
1.57 kristaps 147: each has its file-type determined this way.
148: If multiple files are
1.13 kristaps 149: specified and
1.58 kristaps 150: .Fl m Ns Cm doc
1.12 kristaps 151: or
1.58 kristaps 152: .Fl m Ns Cm an
1.12 kristaps 153: is specified, then this format is used exclusively.
1.1 kristaps 154: .Ss Output Formats
155: The
156: .Nm
157: utility accepts the following
158: .Fl T
1.66 kristaps 159: arguments, which correspond to output modes:
1.93 schwarze 160: .Bl -tag -width "-Tlocale"
1.58 kristaps 161: .It Fl T Ns Cm ascii
1.81 kristaps 162: Produce 7-bit ASCII output.
1.57 kristaps 163: This is the default.
164: See
1.48 kristaps 165: .Sx ASCII Output .
1.58 kristaps 166: .It Fl T Ns Cm html
1.81 kristaps 167: Produce strict CSS1/HTML-4.01 output.
1.57 kristaps 168: See
1.48 kristaps 169: .Sx HTML Output .
1.58 kristaps 170: .It Fl T Ns Cm lint
171: Parse only: produce no output.
172: Implies
1.77 schwarze 173: .Fl W Ns Cm warning .
1.93 schwarze 174: .It Fl T Ns Cm locale
175: Encode output using the current locale.
176: See
177: .Sx Locale Output .
1.91 schwarze 178: .It Fl T Ns Cm man
1.95 kristaps 179: Produce
1.91 schwarze 180: .Xr man 7
1.95 kristaps 181: format output.
182: See
183: .Sx Man Output .
1.73 kristaps 184: .It Fl T Ns Cm pdf
185: Produce PDF output.
186: See
187: .Sx PDF Output .
1.62 kristaps 188: .It Fl T Ns Cm ps
189: Produce PostScript output.
190: See
191: .Sx PostScript Output .
1.58 kristaps 192: .It Fl T Ns Cm tree
193: Produce an indented parse tree.
1.93 schwarze 194: .It Fl T Ns Cm utf8
195: Encode output in the UTF\-8 multi-byte format.
196: See
197: .Sx UTF\-8 Output .
1.58 kristaps 198: .It Fl T Ns Cm xhtml
1.81 kristaps 199: Produce strict CSS1/XHTML-1.0 output.
1.57 kristaps 200: See
1.50 kristaps 201: .Sx XHTML Output .
1.1 kristaps 202: .El
1.13 kristaps 203: .Pp
204: If multiple input files are specified, these will be processed by the
205: corresponding filter in-order.
1.66 kristaps 206: .Ss ASCII Output
207: Output produced by
208: .Fl T Ns Cm ascii ,
209: which is the default, is rendered in standard 7-bit ASCII documented in
210: .Xr ascii 7 .
211: .Pp
212: Font styles are applied by using back-spaced encoding such that an
213: underlined character
214: .Sq c
215: is rendered as
216: .Sq _ Ns \e[bs] Ns c ,
217: where
218: .Sq \e[bs]
219: is the back-space character number 8.
220: Emboldened characters are rendered as
221: .Sq c Ns \e[bs] Ns c .
222: .Pp
223: The special characters documented in
224: .Xr mandoc_char 7
225: are rendered best-effort in an ASCII equivalent.
1.87 kristaps 226: If no equivalent is found,
227: .Sq \&?
228: is used instead.
1.66 kristaps 229: .Pp
230: Output width is limited to 78 visible columns unless literal input lines
231: exceed this limit.
232: .Pp
233: The following
234: .Fl O
235: arguments are accepted:
1.19 kristaps 236: .Bl -tag -width Ds
1.66 kristaps 237: .It Cm width Ns = Ns Ar width
238: The output width is set to
239: .Ar width ,
240: which will normalise to \(>=60.
1.1 kristaps 241: .El
1.66 kristaps 242: .Ss HTML Output
243: Output produced by
244: .Fl T Ns Cm html
245: conforms to HTML-4.01 strict.
246: .Pp
1.61 kristaps 247: The
1.66 kristaps 248: .Pa example.style.css
1.83 kristaps 249: file documents style-sheet classes available for customising output.
250: If a style-sheet is not specified with
251: .Fl O Ns Ar style ,
252: .Fl T Ns Cm html
253: defaults to simple output readable in any graphical or text-based web
254: browser.
1.66 kristaps 255: .Pp
1.89 kristaps 256: Special characters are rendered in decimal-encoded UTF\-8.
1.66 kristaps 257: .Pp
258: The following
1.64 kristaps 259: .Fl O
1.66 kristaps 260: arguments are accepted:
1.37 kristaps 261: .Bl -tag -width Ds
1.94 kristaps 262: .It Cm fragment
263: Do not emit doctype, html, and body elements.
264: The
265: .Cm style
266: argument shall be unused.
267: This is useful when embedding manual content within existing documents.
1.64 kristaps 268: .It Cm includes Ns = Ns Ar fmt
1.40 kristaps 269: The string
270: .Ar fmt ,
1.49 kristaps 271: for example,
1.40 kristaps 272: .Ar ../src/%I.html ,
273: is used as a template for linked header files (usually via the
274: .Sq \&In
1.57 kristaps 275: macro).
276: Instances of
1.43 kristaps 277: .Sq \&%I
1.57 kristaps 278: are replaced with the include filename.
279: The default is not to present a
1.40 kristaps 280: hyperlink.
1.64 kristaps 281: .It Cm man Ns = Ns Ar fmt
1.39 kristaps 282: The string
283: .Ar fmt ,
1.49 kristaps 284: for example,
1.39 kristaps 285: .Ar ../html%S/%N.%S.html ,
286: is used as a template for linked manuals (usually via the
1.37 kristaps 287: .Sq \&Xr
1.57 kristaps 288: macro).
289: Instances of
1.43 kristaps 290: .Sq \&%N
1.40 kristaps 291: and
292: .Sq %S
293: are replaced with the linked manual's name and section, respectively.
1.57 kristaps 294: If no section is included, section 1 is assumed.
295: The default is not to
1.40 kristaps 296: present a hyperlink.
1.64 kristaps 297: .It Cm style Ns = Ns Ar style.css
1.58 kristaps 298: The file
299: .Ar style.css
300: is used for an external style-sheet.
301: This must be a valid absolute or
302: relative URI.
1.61 kristaps 303: .El
1.93 schwarze 304: .Ss Locale Output
305: Locale-depending output encoding is triggered with
306: .Fl T Ns Cm locale .
307: This option is not available on all systems: systems without locale
308: support, or those whose internal representation is not natively UCS-4,
309: will fall back to
310: .Fl T Ns Cm ascii .
311: See
312: .Sx ASCII Output
313: for font style specification and available command-line arguments.
1.95 kristaps 314: .Ss Man Output
315: Translate input format into
316: .Xr man 7
317: output format.
318: This is useful for distributing manual sources to legancy systems
1.96 ! kristaps 319: lacking
1.95 kristaps 320: .Xr mdoc 7
321: formatters.
322: .Pp
323: If
324: .Xr mdoc 7
325: is passed as input, it is translated into
326: .Xr man 7 ;
327: if the input format is
328: .Xr man 7 ,
329: it is parsed and re-outputted.
330: In either case, the
331: .Xr roff 7
332: .Sq so
333: macros are processed prior to producing output.
1.93 schwarze 334: .Ss PDF Output
335: PDF-1.1 output may be generated by
336: .Fl T Ns Cm pdf .
337: See
338: .Sx PostScript Output
339: for
340: .Fl O
341: arguments and defaults.
1.62 kristaps 342: .Ss PostScript Output
1.65 kristaps 343: PostScript
344: .Qq Adobe-3.0
345: Level-2 pages may be generated by
1.62 kristaps 346: .Fl T Ns Cm ps .
1.67 kristaps 347: Output pages default to letter sized and are rendered in the Times font
1.70 kristaps 348: family, 11-point.
349: Margins are calculated as 1/9 the page length and width.
1.71 kristaps 350: Line-height is 1.4m.
1.66 kristaps 351: .Pp
352: Special characters are rendered as in
353: .Sx ASCII Output .
354: .Pp
355: The following
356: .Fl O
357: arguments are accepted:
358: .Bl -tag -width Ds
359: .It Cm paper Ns = Ns Ar name
360: The paper size
361: .Ar name
362: may be one of
1.68 kristaps 363: .Ar a3 ,
364: .Ar a4 ,
365: .Ar a5 ,
366: .Ar legal ,
1.66 kristaps 367: or
368: .Ar letter .
1.68 kristaps 369: You may also manually specify dimensions as
370: .Ar NNxNN ,
371: width by height in millimetres.
372: If an unknown value is encountered,
373: .Ar letter
374: is used.
1.66 kristaps 375: .El
1.93 schwarze 376: .Ss UTF\-8 Output
377: Use
378: .Fl T Ns Cm utf8
379: to force a UTF\-8 locale.
1.73 kristaps 380: See
1.93 schwarze 381: .Sx Locale Output
382: for details and options.
1.50 kristaps 383: .Ss XHTML Output
384: Output produced by
1.58 kristaps 385: .Fl T Ns Cm xhtml
1.50 kristaps 386: conforms to XHTML-1.0 strict.
387: .Pp
388: See
389: .Sx HTML Output
390: for details; beyond generating XHTML tags instead of HTML tags, these
391: output modes are identical.
1.77 schwarze 392: .Sh EXIT STATUS
393: The
394: .Nm
395: utility exits with one of the following values, controlled by the message
396: .Ar level
397: associated with the
398: .Fl W
399: option:
400: .Pp
401: .Bl -tag -width Ds -compact
402: .It 0
403: No warnings or errors occurred, or those that did were ignored because
404: they were lower than the requested
405: .Ar level .
406: .It 2
407: At least one warning occurred, but no error, and
408: .Fl W Ns Cm warning
409: was specified.
410: .It 3
411: At least one parsing error occurred, but no fatal error, and
412: .Fl W Ns Cm error
413: or
414: .Fl W Ns Cm warning
415: was specified.
416: .It 4
417: A fatal parsing error occurred.
418: .It 5
419: Invalid command line arguments were specified.
420: No input files have been read.
421: .It 6
422: An operating system error occurred, for example memory exhaustion or an
423: error accessing input files.
424: Such errors cause
425: .Nm
426: to exit at once, possibly in the middle of parsing or formatting a file.
427: .El
428: .Pp
429: Note that selecting
430: .Fl T Ns Cm lint
431: output mode implies
432: .Fl W Ns Cm warning .
1.1 kristaps 433: .Sh EXAMPLES
1.13 kristaps 434: To page manuals to the terminal:
1.1 kristaps 435: .Pp
1.82 kristaps 436: .Dl $ mandoc \-Wall,stop mandoc.1 2\*(Gt&1 | less
437: .Dl $ mandoc mandoc.1 mdoc.3 mdoc.7 | less
1.28 kristaps 438: .Pp
1.41 kristaps 439: To produce HTML manuals with
440: .Ar style.css
441: as the style-sheet:
1.38 kristaps 442: .Pp
1.82 kristaps 443: .Dl $ mandoc \-Thtml -Ostyle=style.css mdoc.7 \*(Gt mdoc.7.html
1.38 kristaps 444: .Pp
1.28 kristaps 445: To check over a large set of manuals:
446: .Pp
1.77 schwarze 447: .Dl $ mandoc \-Tlint `find /usr/src -name \e*\e.[1-9]`
1.66 kristaps 448: .Pp
449: To produce a series of PostScript manuals for A4 paper:
450: .Pp
1.82 kristaps 451: .Dl $ mandoc \-Tps \-Opaper=a4 mdoc.7 man.7 \*(Gt manuals.ps
1.91 schwarze 452: .Pp
453: Convert a modern
454: .Xr mdoc 7
455: manual to the older
456: .Xr man 7
457: format, for use on systems lacking an
458: .Xr mdoc 7
459: parser:
460: .Pp
461: .Dl $ mandoc \-Tman foo.mdoc \*(Gt foo.man
1.77 schwarze 462: .Sh DIAGNOSTICS
463: Standard error messages reporting parsing errors are prefixed by
464: .Pp
465: .Sm off
466: .D1 Ar file : line : column : \ level :
467: .Sm on
468: .Pp
469: where the fields have the following meanings:
470: .Bl -tag -width "column"
471: .It Ar file
472: The name of the input file causing the message.
473: .It Ar line
474: The line number in that input file.
475: Line numbering starts at 1.
476: .It Ar column
477: The column number in that input file.
478: Column numbering starts at 1.
479: If the issue is caused by a word, the column number usually
480: points to the first character of the word.
481: .It Ar level
482: The message level, printed in capital letters.
483: .El
484: .Pp
485: Message levels have the following meanings:
486: .Bl -tag -width "warning"
487: .It Cm fatal
488: The parser is unable to parse a given input file at all.
489: No formatted output is produced from that input file.
490: .It Cm error
491: An input file contains syntax that cannot be safely interpreted,
492: either because it is invalid or because
493: .Nm
494: does not implement it yet.
495: By discarding part of the input or inserting missing tokens,
496: the parser is able to continue, and the error does not prevent
497: generation of formatted output, but typically, preparing that
498: output involves information loss, broken document structure
499: or unintended formatting.
500: .It Cm warning
501: An input file uses obsolete, discouraged or non-portable syntax.
502: All the same, the meaning of the input is unambiguous and a correct
503: rendering can be produced.
504: Documents causing warnings may render poorly when using other
505: formatting tools instead of
506: .Nm .
507: .El
508: .Pp
509: Messages of the
510: .Cm warning
511: and
512: .Cm error
513: levels are hidden unless their level, or a lower level, is requested using a
514: .Fl W
515: option or
516: .Fl T Ns Cm lint
517: output mode.
518: .Pp
519: The
520: .Nm
521: utility may also print messages related to invalid command line arguments
522: or operating system errors, for example when memory is exhausted or
1.78 schwarze 523: input files cannot be read.
524: Such messages do not carry the prefix described above.
1.20 kristaps 525: .Sh COMPATIBILITY
1.26 kristaps 526: This section summarises
1.20 kristaps 527: .Nm
1.76 kristaps 528: compatibility with GNU troff.
1.32 kristaps 529: Each input and output format is separately noted.
1.48 kristaps 530: .Ss ASCII Compatibility
1.37 kristaps 531: .Bl -bullet -compact
1.29 kristaps 532: .It
1.87 kristaps 533: Unrenderable unicode codepoints specified with
1.86 kristaps 534: .Sq \e[uNNNN]
535: escapes are printed as
536: .Sq \&?
537: in mandoc.
538: In GNU troff, these raise an error.
539: .It
1.49 kristaps 540: The
1.33 kristaps 541: .Sq \&Bd \-literal
1.49 kristaps 542: and
1.32 kristaps 543: .Sq \&Bd \-unfilled
544: macros of
545: .Xr mdoc 7
546: in
1.58 kristaps 547: .Fl T Ns Cm ascii
1.32 kristaps 548: are synonyms, as are \-filled and \-ragged.
1.26 kristaps 549: .It
1.86 kristaps 550: In historic GNU troff, the
1.27 kristaps 551: .Sq \&Pa
1.32 kristaps 552: .Xr mdoc 7
553: macro does not underline when scoped under an
1.30 kristaps 554: .Sq \&It
1.57 kristaps 555: in the FILES section.
556: This behaves correctly in
1.27 kristaps 557: .Nm .
558: .It
1.58 kristaps 559: A list or display following the
1.27 kristaps 560: .Sq \&Ss
1.32 kristaps 561: .Xr mdoc 7
562: macro in
1.58 kristaps 563: .Fl T Ns Cm ascii
1.20 kristaps 564: does not assert a prior vertical break, just as it doesn't with
1.27 kristaps 565: .Sq \&Sh .
1.20 kristaps 566: .It
1.32 kristaps 567: The
568: .Sq \&na
569: .Xr man 7
1.34 kristaps 570: macro in
1.58 kristaps 571: .Fl T Ns Cm ascii
1.34 kristaps 572: has no effect.
1.20 kristaps 573: .It
574: Words aren't hyphenated.
575: .El
1.50 kristaps 576: .Ss HTML/XHTML Compatibility
1.42 kristaps 577: .Bl -bullet -compact
578: .It
579: The
1.47 kristaps 580: .Sq \efP
581: escape will revert the font to the previous
582: .Sq \ef
583: escape, not to the last rendered decoration, which is now dictated by
1.57 kristaps 584: CSS instead of hard-coded.
585: It also will not span past the current scope,
586: for the same reason.
587: Note that in
1.47 kristaps 588: .Sx ASCII Output
589: mode, this will work fine.
590: .It
591: The
1.42 kristaps 592: .Xr mdoc 7
593: .Sq \&Bl \-hang
594: and
595: .Sq \&Bl \-tag
596: list types render similarly (no break following overreached left-hand
597: side) due to the expressive constraints of HTML.
598: .It
599: The
600: .Xr man 7
601: .Sq IP
602: and
603: .Sq TP
604: lists render similarly.
605: .El
1.1 kristaps 606: .Sh SEE ALSO
1.85 kristaps 607: .Xr eqn 7 ,
1.57 kristaps 608: .Xr man 7 ,
1.13 kristaps 609: .Xr mandoc_char 7 ,
1.84 kristaps 610: .Xr mdoc 7 ,
611: .Xr roff 7 ,
612: .Xr tbl 7
1.1 kristaps 613: .Sh AUTHORS
614: The
615: .Nm
1.26 kristaps 616: utility was written by
1.90 kristaps 617: .An Kristaps Dzonsons ,
618: .Mt kristaps@bsd.lv .
1.39 kristaps 619: .Sh CAVEATS
620: In
1.58 kristaps 621: .Fl T Ns Cm html
1.50 kristaps 622: and
1.58 kristaps 623: .Fl T Ns Cm xhtml ,
1.39 kristaps 624: the maximum size of an element attribute is determined by
625: .Dv BUFSIZ ,
1.57 kristaps 626: which is usually 1024 bytes.
627: Be aware of this when setting long link
1.58 kristaps 628: formats such as
629: .Fl O Ns Cm style Ns = Ns Ar really/long/link .
1.51 kristaps 630: .Pp
631: Nesting elements within next-line element scopes of
1.58 kristaps 632: .Fl m Ns Cm an ,
1.51 kristaps 633: such as
634: .Sq br
635: within an empty
636: .Sq B ,
637: will confuse
1.58 kristaps 638: .Fl T Ns Cm html
1.51 kristaps 639: and
1.58 kristaps 640: .Fl T Ns Cm xhtml
1.52 kristaps 641: and cause them to forget the formatting of the prior next-line scope.
1.53 kristaps 642: .Pp
1.54 kristaps 643: The
644: .Sq \(aq
1.55 kristaps 645: control character is an alias for the standard macro control character
646: and does not emit a line-break as stipulated in GNU troff.
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