goop(1) on Linux
The text 494f909f21f5, as Debian 2.1 (Slink) shipped it.
squishy transparent oil and bubble screenhack
Flags it lists
-
-additive -
-count -
-delay -
-install -
-layers -
-mono -
-non-transparent -
-root -
-subtractive -
-transparent -
-visual -
-window -
-xor