cangen(1) on Linux
The text 9109e7360de2, as Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
manual page for cangen 2020.11.0-1
Flags it lists
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-D -
-E -
-I -
-L -
-R -
-b -
-c -
-e -
-f -
-g -
-i -
-m -
-n -
-p -
-v -
-x