422 lines
11 KiB
Groff
422 lines
11 KiB
Groff
.\" $NetBSD: groff_tmac.5,v 1.2 2002/06/13 00:00:30 wiz Exp $
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.\"
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.\" -*- nroff -*-
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.ig /
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groff_tmac.5
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This file is part of groff, the GNU roff type-setting system.
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Copyright (C) 2000 Free Software Foundation, Inc.
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written by Bernd Warken <bwarken@mayn.de>
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Last update: 17 May 2000
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.1 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being this .ig-section and AUTHOR, with no
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Front-Cover Texts, and with no Back-Cover Texts.
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A copy of the Free Documentation License is included as a file called
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FDL in the main directory of the groff source package.
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./
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.
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.\" --------------------------------------------------------------------
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.\" Setup
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.\" --------------------------------------------------------------------
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.
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.if n \{\
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. mso tmac.tty-char
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. ftr CR R
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. ftr CI I
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. ftr CB B
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.\}
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.
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.\" text lines in macro definitions or bracketed sections \{...\}
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.de text
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. if 1 \&\\$*\&
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..
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.
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.de BIR
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. ie (\\n[.$] < 3) \
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. BI $@
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. el \{\
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. ds @tmp@ \fB\\$1\fP\fI\\$2\fP
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. shift 2
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. text \\*[@tmp@]\fR\\$*\fP
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. rm @tmp@
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. \}
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..
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.
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.de 'char
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. ds @tmp@ `\f(CB\\$1\fP'
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. shift
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. text \\*[@tmp@]\\$*
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. rm @tmp@
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..
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.
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.de option
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. ds @tmp@ \f(CB\\$1\fP
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. shift 1
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. text \\*[@tmp@]\\$*
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. rm @tmp@
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..
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.
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.als shellcommand option
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.
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.de argument
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. ds @tmp@ \f(CI\\$1\fP
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. shift 1
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. text \\*[@tmp@]\\$*
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. rm @tmp@
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..
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.
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.de request
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. ds @tmp@ \f(CB\\$1\fP
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. shift 1
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. text \\*[@tmp@]\\$*
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. rm @tmp@
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..
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.
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.\" --------------------------------------------------------------------
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.\" Title
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.\" --------------------------------------------------------------------
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.TH GROFF_TMAC 5 "April 8, 2001" "Groff Version 1.16.1"
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.SH NAME
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groff_tmac \- macro files in the roff typesetting system
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.\" --------------------------------------------------------------------
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.SH DESCRIPTION
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.\" --------------------------------------------------------------------
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The
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.BR roff (7)
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type-setting system provides a set of macro packages suitable for
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special kinds of documents. Each macro package stores its macros and
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definitions in a file called the package's
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.BR "tmac file" .
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The name is deduced from
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.RB ` T roff
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.BR MAC ros'.
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.LP
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The tmac files are normal roff source documents, except that they
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usually contain only definitions and setup commands, but no text. All
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tmac files are kept in a single or a small number of directories, the
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.B tmac
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directories.
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.\" --------------------------------------------------------------------
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.SH NAMING
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.\" --------------------------------------------------------------------
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In classical roff systems, there was a funny naming scheme.
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If the name of a macro package started with
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.'char m
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this letter was omitted, e.g., the macro package for the man pages
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.I man
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was called
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.I an
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and its macro file
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.IR tmac.an .
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.LP
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By a similar reasoning, macro packages that did not start with an
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.'char m
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were often referred to by adding an
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.'char m ,
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e.g., the package corresponding to
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.I tmac.doc
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was called
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.I mdoc
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because the command-line for activating it reads
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.RS
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.LP
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.BIR "troff\ \-m" doc .
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.RE
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.LP
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Actual versions of
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.BR groff (1)
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provide both naming schemes for the inflicted macro packages, with and
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without the leading
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.'char m .
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So in
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.IR groff ,
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the
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.I man
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macro package may be specified as
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.RS
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.LP
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.BIR "groff\ \-m\ " man ,
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.br
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.BIR "groff\ \-m" an ,
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.br
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.BIR "groff\ \-m" man , or
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.br
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.BIR "groff\ \-m " an .
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.RE
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.LP
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The easiest way to find out which macro packages are available on a
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system is to check the content of the
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.I tmac
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directories.
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For example, a file called
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.BI tmac. anything
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determines a macro package named
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.IR anything .
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.LP
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In
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.IR groff ,
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most macro packages are described in man pages called
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.BR groff_<name> (7),
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with a leading
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.'char m
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for the classical packages.
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.\" --------------------------------------------------------------------
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.SH INCLUSION
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.\" --------------------------------------------------------------------
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There are several ways to use a macro package in documents. At
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run-time, the groff option
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.option \-m \ \c
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.argument name
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makes the definitions in the macro file
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.BI tmac. name
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available as described in the section
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.BR NAMING .
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.LP
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It is also possible to include the macro file into the document by using
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the groff requests
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.request .so
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or
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.request .mso .
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For
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.request .so
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the full filename of the macro file must be specified \(em including the
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directory where it is kept.
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If the macro file is stored in one of the tmac directories it is more
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convenient to use
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.request .mso
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instead because it additionally searches the tmac path for the filename.
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.LP
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Note that in order to resolve the
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.request .so
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and
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.request .mso
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requests the roff preprocessor
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.shellcommand soelim
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must be called. This can be done either directly by a pipeline on the
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command line or by using the
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.option \-s
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option of
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.shellcommand groff .
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.LP
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You can also supply the letter
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.'char s
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in the preprocessor word as described in section
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.BR CONVENTION .
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.LP
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For example, suppose a macro file is stored as
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.I /usr/share/groff/tmac/tmac.macros
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and is used in some document called
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.IR docu.roff .
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.LP
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At run-time, the formatter call for this is
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.RS
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.LP
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.ft CR
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.shellcommand "groff\ \-m"
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.argument macros
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.argument docu.roff
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.ft P
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.RE
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.LP
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To include the macro file directly in the document either
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.RS
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.ft CR
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\&\.mso tmac.macros
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.ft P
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.RE
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is used or
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.RS
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.ft CR
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\&\.so /usr/share/groff/tmac/tmac.macros
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.ft P
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.RE
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.LP
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In both cases, the formatter is called with
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.ft CR
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.RS
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groff\ \-s docu.roff
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.RE
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.ft P
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.
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.\" --------------------------------------------------------------------
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.SH CONVENTION
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.\" --------------------------------------------------------------------
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.LP
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There is a convention that is supported by many modern roff
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type-setters: the
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.B preprocessor word
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described in the following.
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.LP
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If the first line in a document is a comment, the first word (after the
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comment characters and a blank) constitutes the
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.B preprocessor
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.BR word .
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That means that the letters of this word are interpreted as
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abbreviations for those preprocessor commands that should be run
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when formatting the document. Mostly, only the letters corresponding to
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the options for the preprocessors are recognized,
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.'char e ,
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.'char G ,
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.'char g ,
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.'char p ,
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.'char R ,
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.'char s , and
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.'char t
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(see
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.BR roff (7)).
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.LP
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Besides being a good reminder for the user, some formatters (like the
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.BR man (1)
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program) are even able to automatically start the preprocessors
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specified in the preprocessor word, but do not bet on this.
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.\" --------------------------------------------------------------------
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.SH "WRITING A MACRO FILE"
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.\" --------------------------------------------------------------------
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Writing a groff macro file is easy. Design a set of macros, strings,
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registers, etc. Store them in a single file. Documents that use the
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macros include this macro file with the
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.request .so
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request as described in the
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.B INCLUSION
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section.
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.LP
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To use the tmac functionality, call the macro file
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.BI tmac. whatever
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and put it in some directory of the tmac path, cf. section
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.BR FILES .
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Then documents can include it with the
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.request .mso
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request or the
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.shellcommand "groff\ \-m"
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option as described in the
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.B INCLUSION
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section.
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.LP
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If your macros might be of general usage contact the groff maintainers
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to have them included in the groff
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.I contrib
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source directory.
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.LP
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Some general guidelines might be helpful in writing macros.
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.IP \(bu 2m
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Double all functional backslashes,
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.'char \e
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->
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.'char \e\e .
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.IP \(bu 2m
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All printable backslashes must be written as
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.'char \ee .
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.IP \(bu 2m
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Escape all dots,
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.'char .
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->
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.'char \e. .
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.IP \(bu 2m
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Make ample use of the non-printable character
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.'char \e&
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in text parts, esp. before
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.'char \e
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and at the beginning of a line, but not before a delayed command.
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.IP \(bu 2m
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Use the character
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.'char @
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in temporary variable names.
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.IP \(bu 2m
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Test your macros for text and graphical devices, e.g.,
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.I latin1
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and
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.IR ps .
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.\" --------------------------------------------------------------------
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.SH FILES
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.\" --------------------------------------------------------------------
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All macro names that want to use the tmac mechanism must be named
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according to the form
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.BIR tmac. name .
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.LP
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The macro files are kept in the
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.B tmac
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.BR directories ,
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all of which constitue the
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.B tmac
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.BR path.
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In accordance with the Filesystem Hierarchy Standard (FHS), the standard
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tmac directory location for groff is
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.IR /usr/share/groff/tmac ,
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a local installation will use
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.IR /usr/local/share/groff/tmac .
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Older systems used a subdirectory of
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.IR /usr/lib .
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Independently of the default tmac path, the tmac path actually used by a
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document can always be set by a shell environment variable, cf. section
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.BR ENVIRONMENT .
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.\" --------------------------------------------------------------------
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.SH ENVIRONMENT
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.\" --------------------------------------------------------------------
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.TP
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.B GROFF_TMAC_PATH
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A colon separated list of tmac directories in which to search for macro
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files, the
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.B tmac
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.BR path .
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If unset a default path is used as is outlined in the
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.B FILES
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section.
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.\" --------------------------------------------------------------------
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.SH BUGS
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.\" --------------------------------------------------------------------
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The groff documentation is in evolution at the moment. It is possible
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that small inconsistencies between different documents exist
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temporarily.
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.\" --------------------------------------------------------------------
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.SH AUTHOR
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.\" --------------------------------------------------------------------
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This document is part of groff, the GNU roff distribution. It was
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written by Bernd Warken <bwarken@mayn.de>.
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.LP
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It is distributed under the terms of the FDL (GNU Free Documentation
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License) version 1.1 or later. You should have received a copy of the
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FDL on your system, it is also available on-line under
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.RS
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.LP
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.IR <http://www.gnu.org/copyleft/fdl.html> .
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.RE
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.\" --------------------------------------------------------------------
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.SH "SEE ALSO"
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.\" --------------------------------------------------------------------
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The authoritative source of information for all details of the groff
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system is the groff
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.BR info (1)
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file.
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.LP
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For a groff overview, see
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.BR roff (7)
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and the file
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.I README
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in the groff source package.
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.LP
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The groff tmac macro packages are
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.BR groff_man (7),
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.BR groff_markup (7),
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.BR groff_mm (7),
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.BR groff_ms (7),
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.BR groff_msafer (7),
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.BR mdoc (7),
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.BR mdoc.samples (7),
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.BR me (7).
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.LP
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The groff language is described in
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.BR groff (7)
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and the formatters in
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.BR groff (1),
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.BR troff (1).
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.LP
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The Filesystem Hierarchy Standard (FHS) is available at
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.BR http://www.pathname.com/fhs/ .
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