fvwm1(1) on Linux
The text d3ce038c7113, as Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
F(?) Virtual Window Manager for X11, version 1.x
Flags it lists
-
-d -
-debug -
-f -
-m4-equote -
-m4-prefix -
-m4-squote -
-m4opt -
-m4prog -
-no-m4 -
-s -
-version