lexgrog(1) on Linux
The text c39afd373d3e, as Debian 10 (Buster) shipped it.
parse header information in man pages
Flags it lists
-
--cat -
--debug -
--encoding -
--filters -
--help -
--man -
--usage -
--version -
--whatis -
-? -
-E -
-V -
-c -
-d -
-f -
-m -
-w