usage: pdfmom [--roff] [-Tpdf] [groff-option ...] [file ...]
usage: pdfmom [--roff] -Tps [pdfroff-option ...] [groff-option ...] [file ...]
usage: pdfmom {-v | --version}
usage: pdfmom --help

Handle forward references in groff(1) documents to be formatted as PDF.
See the pdfmom(1) manual page.