I'm not sure what state the gimp is in (I think you guys are in a feature freeze right?), but I would like to humbly propose the following (if there isn't a way to do it already): A lot of plugins (obviously) work over an image on a tile by tile basis, and since the selection mask is applied automatically to the tiles, why not have a way of giving tile iterators only the tiles that have pixels that are in the selection...although I can't come up with an example I'm sure that if this was applied transparently there would be problems, but what about something like a "in_selection" bit that is a member of the pixel reigon (the bit is set for the tile when the user makes a selection) that tells you whether or not all the pixels of the tile are outside the selection, so the plugins has a chance to skip the tile... Am I making any sense or is there already an easy way to do this (it seems easy enough to impliment <famouns last words>)...