grdimage(1) on Linux
The text e1539a7d2220, as Debian 3.0 (Woody) shipped it. The page shows this text now.
Create grayshaded or colored image from a 2-D netCDF grd file
Flags it lists
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-B -
-C -
-E -
-G -
-I -
-J -
-K -
-M -
-O -
-P -
-R -
-S -
-T -
-U -
-V -
-X -
-Y -
-c