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Posted: 2006-03-27T12:27:47-07:00
by magick
You are right, the documentation is unclear about the color reduction operator. The options -colors, -dither, and -treedepth all are settings but they trigger a color reduction operator if an image is available.

Posted: 2006-03-27T17:32:36-07:00
by anthony
In other words these are hold overs from the IM version 5 and before situation.

One of the reasons I have not actually gotten around to generating the planned section about these operators at the bottom of the "Colors" section of IM examples. I did however give a few examples in the "GIF transparency Handling" area.