faxspool(1) on Linux
The text 8c232e912ac7, as Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
queue and convert files for faxing with sendfax(8)
Flags it lists
-
-A -
-D -
-F -
-P -
-c -
-n -
-p -
-q -
-t