PTmasker(1) on Linux
The text cb0b11d5dfce, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
Compute stitching masks
Flags it lists
-
-e -
-f -
-h -
-m -
-p -
-q -
-s -
-w -
-x -
-z