roff2dvi in groffer 2.2.5 is part of groff version 1.22.3. GNU groff and groffer come with ABSOLUTELY NO WARRANTY. You may redistribute copies of groff and its subprograms under the terms of the GNU General Public License.

usage: roff2dvi [option]... [--] [filespec]... -h | --help print usage information -v | --version print version information All other options are arbitrary options of `groffer'; the options override the behavior of this program. filespec's are the same as in `groffer': either the names of existing, readable files or `-' for standard input or a search pattern for man pages. No `filespec' assumes standard input automatically.