goop(1): squishy transparent oil/bubble ...

NAME

-window: Draw on a newly-created window. This is the default.
-root: Draw on the root window.
-mono: If on a color display, pretend we're on a monochrome display.
-install: Install a private colormap for the window.
-visual visual: Specify which visual to use. Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual.
-count integer: How many bubbles to draw per layer. Default: random.
-planes integer: How many planes to draw. Default: random, based on screen depth.
-delay microseconds: How much of a delay should be introduced between steps of the animation. Default 12000, or about 0.012 seconds.
-transparent: If -layers is greater than 1, then each layer will be drawn in one color, and when they overlap, the colors will be mixed. This is the default.
-non-transparent: Turns off -transparent.
-additive: If -transparent is specified, then this option means that the colors will be mixed using an additive color model, as if the blobs were projected light. This is the default.
-subtractive: If -transparent is specified, then this option means that the colors will be mixed using a subtractive color model, as if the blobs were translucent filters.
-xor: Draw with xor instead of the other color tricks.

DISPLAY: to get the default host and display number.
XENVIRONMENT: to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.