.sh GSI
Simulate Model 37 Teletype facilities on
GSI-300, DASI and other Diablo-mechanism terminals.
.op
Gives half-line and reverse platen motions.
.op
Approximates Greek letters and other special characters
by overstriking.
.op
Usable as a filter.
.sh COL
Canonicalize files with reverse line feeds
for one-pass printing.
.op
Usable as a filter.