There are also several environment variables (of the operating system,
gtroff) which can modify the behavior of
PATH, is used for commands executed by
gtroff. This also applies to
soelim. It does not apply to
The default command prefix is determined during the installation
process. If a non-GNU troff system is found, prefix ‘g’ is used,
preconvpreprocessor to select the encoding of input files. Setting this option implies
groff's command line option -k (this is,
groffactually always calls
preconv). If set without a value,
preconvwithout arguments. An explicit -K command line option overrides the value of GROFF_ENCODING. See the manual page of
devname directory (before the default directories are tried). See Font Directories.
groffcreates temporary files. If this is not set and TMPDIR is set, temporary files are created in that directory. Otherwise temporary files are created in a system-dependent default directory (on Unix and GNU/Linux systems, this is usually /tmp).
post-grohtmlcan create temporary files in this directory.
Note that MS-DOS and MS-Windows ports of
groff use semi-colons,
rather than colons, to separate the directories in the lists described