apollonian(6x) on Linux
The text d3016e178b3e, as Debian 10 (Buster) shipped it.
Descartes Circle Theorem.
Flags it lists
-
-altgeom -
-cycles -
-delay -
-fps -
-label -
-ncolors -
-no-altgeom -
-no-label -
-root -
-visual -
-window