The options -v and --version print the version information of the program to standard output and exit. The options -h and --help print a usage information of the program to standard output and stop the program instantly.
All other options are assumed to be groffer options. They are internally passed to groffer. They override the behavior of the program. The options are optional, they can be omitted.
The filespec arguments correspond to the filespec arguments of groffer. So they are either the names of existing, readable files or - for standard input, or the name of a man page or a groffer(1) man page search pattern. If no filespec is specified standard input is assumed automatically.
There are more of these programs for generating other formats of roff input.
This file is part of groffer, which is part of groff, a free software project. You can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version~2, or (at your option) any later version.
You should have received a copy of the GNU General Public License along with groff, see the files COPYING and LICENSE in the top directory of the groff source package. Or read the man~page gpl(1). You can also write to the Free Software Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA.