gap(1) on Linux
The text 9487ac3150ed, as Debian 3.1 (Sarge) shipped it.
manual page for GAP - Groups, Algorithms and Programming Version 4.4.2
Flags it lists
-
-A -
-B -
-D -
-K -
-L -
-M -
-N -
-R -
-T -
-X -
-Y -
-a -
-b -
-c -
-e -
-f -
-g -
-i -
-l -
-m -
-n -
-o -
-q -
-r -
-x -
-y