fors_zeropoint(7) on Linux
The text 81f089510bb4, as Debian 10 (Buster) shipped it.
Compute zeropoint
Flags it lists
-
--magcutE -
--magcutk -
--magsyserr -
--maxoffset -
--sex_config -
--sex_exe -
--sex_mag -
--sex_magerr -
--sex_radius