8.4 - Operator Details

8.4.1 - Alpha Modify

You can set the level of the alpha channel (transparency) in the area selection you've made in the image using this operator's Amount

Tip: Although the values here are from 0 to 255, they are modified into the 16-bit domain when they are applied. 01 becomes 0101, 99 becomes 9999, FE becomes FEFE and so on.
Warning: Only the PNG and iToolBox image formats save transparency. Save in PNG or iToolBox format (.elx or .ato) for anything that uses transparency, or the image's transparency information will be lost.

The alpha modify operator
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