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If I draw something with an animated brush which is set to random, each stroke starts with a different frame. If I, however, re-apply that brush, in each frame it will start with the same frame. I'd like to have re-apply behave more like re-drawing. This would make creating living lines of static objects more easier.

Markus,
Try this instead. It should work frame by frame or over selected frames... and it should apply to heads only. Sven