therion(1) on Linux
The text 0572d2e05a8b, as Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
program to draw cave surveys
Flags it lists
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--help -
--print-encodings -
--print-init-file -
--version -
-L -
-d -
-g -
-h -
-i -
-l -
-p -
-q -
-s -
-u -
-v