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SWFGradient->addEntry -- Adds an entry to the gradient list.
Description
void swfgradient->addentry (double ratio, integer red, integer green, integer blue [, integer a])
swfgradient->addentry() adds an entry to the gradient list.
ratio is a number between 0 and 1 indicating where in
the gradient this color appears. Thou shalt add entries in order of increasing ratio.
red, green, blue
is a color (RGB mode). Last parameter a is optional.