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/contrib/groff/tmac/devtag.tmac

https://bitbucket.org/freebsd/freebsd-head/
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  1.ig
  2devtag.tmac - macro package for adding tags to roff documents.
  3
  4File position: <groff_source_top>/tmac/devtag.tmac
  5Installed position: groff's main macro directory.
  6
  7------------------------------------------------------------------------
  8    Legalize
  9------------------------------------------------------------------------
 10
 11This file is part of groff, the GNU roff type-setting system.
 12
 13Copyright (C) 2004 Free Software Foundation, Inc.
 14written by Gaius Mulley <gaius@glam.ac.uk>.
 15
 16groff is free software; you can redistribute it and/or modify it under
 17the terms of the GNU General Public License as published by the Free
 18Software Foundation; either version 2, or (at your option) any later
 19version.
 20
 21groff is distributed in the hope that it will be useful, but WITHOUT
 22ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 23FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 24for more details.
 25
 26You should have received a copy of the GNU General Public License
 27along with groff; see the file COPYING.  If not, write to the Free
 28Software Foundation, 51 Franklin St - Fifth Floor, Boston, MA
 2902110-1301, USA.
 30
 31
 32------------------------------------------------------------------------
 33    Description
 34------------------------------------------------------------------------
 35
 36A simple set of macros to provide markup devices (currently only grohtml)
 37with tags that define the meaning of the formatted text and also
 38basic formatting instructions.  It generalizes the tag concept used within
 39grohtml and in the future it is hoped that more markup based devices
 40can capitalize on this work.  It also clearly defines those tags which are
 41honoured by grohtml.  Note that not all tags are included here.  Some
 42of the grohtml specific tags (header specific and jobname, etc.) are
 43called directly from within www.tmac.  The tags defined here are
 44reasonably generic and could be applied to other devices.
 45..
 46.
 47.do if d DEVTAG-NH .nx
 48.
 49.nr _C \n(.C
 50.cp 0
 51.
 52.\" --------------------------------------------------------------------
 53.\" DEVTAG <name>
 54.\"
 55.\"   Emit a tag <name>
 56.\"
 57.de DEVTAG
 58.  tag devtag:\\$*
 59..
 60.\" --------------------------------------------------------------------
 61.\" DEVTAG-NEXT <name>
 62.\"
 63.\"   When the troff state changes, emit tag <name>
 64.\"
 65.de DEVTAG-NEXT
 66.  taga devtag:\\$*
 67..
 68.
 69.\" --------------------------------------------------------------------
 70.\"  SH <level>
 71.\"  NH <level>
 72.\"       tell device we are starting a numbered heading
 73.\"       Takes a single parameter <level>. <level> 1
 74.\"       is the outer most level.
 75.
 76.de DEVTAG-NH
 77.   DEVTAG ".NH \\$1"
 78..
 79.als DEVTAG-SH DEVTAG-NH
 80.
 81.\" --------------------------------------------------------------------
 82.\"  COL <n>
 83.\"     indicate that the following text is aligned for the column <n>
 84.\"     n: [1..MAX(n)]
 85.
 86.de DEVTAG-COL
 87.   DEVTAG ".col \\$1"
 88..
 89.
 90.\" --------------------------------------------------------------------
 91.\"  EO-H
 92.\"     indicate that a header has finished.
 93.
 94.de DEVTAG-EO-H
 95.   DEVTAG ".eo.h"
 96..
 97.\" --------------------------------------------------------------------
 98.\"  EO-TL
 99.\"     indicate that a title has finished.
100.
101.de DEVTAG-EO-TL
102.   DEVTAG ".eo.tl"
103..
104.\" --------------------------------------------------------------------
105.\"  TL
106.\"     indicate that the following text forms a title.
107.
108.de DEVTAG-TL
109.   DEVTAG ".tl"
110..
111.
112.\" --------------------------------------------------------------------
113.\"  COL-NEXT <n>
114.\"     emit a column tag just before the next glyph.
115.
116.de DEVTAG-COL-NEXT
117.   DEVTAG-NEXT ".col \\$1"
118..
119.
120.
121.cp \n[_C]
122.
123.
124.\" --------------------------------------------------------------------
125.\" Emacs settings
126.\" --------------------------------------------------------------------
127.
128.\" Local Variables:
129.\" mode: nroff
130.\" End:
131.\" EOF