драйвер вывода groff для Portable Document Format (groff output driver for Portable Document Format)
Окружение (Environment)
GROFF_FONT_PATH
A list of directories in which to seek the selected output
device's directory of device and font description files.
If, in the download file, the font file has been specified
with a full path, no directories are searched. See
troff(1) and groff_font(5).
GROPDF_NOSLIDE
If this is set true, gropdf will ignore all commands which
produce a presentation pdf, and produce a normal pdf
instead.
SOURCE_DATE_EPOCH
A timestamp (expressed as seconds since the Unix epoch) to
use as the creation timestamp in place of the current
time. The time is converted to human-readable form using
Perl's localtime() function and recorded in a PDF comment.
TZ The time zone to use when converting the current time (or
value of SOURCE_DATE_EPOCH) to human-readable form; see
tzset(3).
