grdmask(1) on Linux
The text 883c7eab7e08, as Debian 3.0 (Woody) shipped it. The page shows this text now.
Create mask grdfiles from xy paths.
Flags it lists
-
-F -
-G -
-H -
-I -
-L -
-M -
-N -
-R -
-S -
-V -
-bi