FreeBSD 11.0 - man page for psroff (freebsd section 1)
PSROFF(1) BSD General Commands Manual PSROFF(1)NAMEpsroff -- send troff to PostScript printerSYNOPSISpsroff [groff options] [file ...]DESCRIPTIONThe psroff program is actually just a shell script which invokes the groff(1) command to print the troff files to a PostScript printer.SEE ALSOgroff(1), lpr(1), vgrind(1), environ(7)BSDSeptember 15, 1997 BSD