therion(1) on Linux
The text d08249a009f2, as Debian 9 (Stretch) shipped it.
program to draw cave surveys
Flags it lists
-
--help -
--print-encodings -
--print-init-file -
--version -
-L -
-d -
-g -
-h -
-i -
-l -
-p -
-q -
-s -
-u -
-v