You'll get red edges when there are edges in the red plane, yellow edges when there are edges in the red and green planes, and so on. Then, the results will also be grey. It is a sort of localized smearing. This is much easier to see than it is to explain. You will be prompted to enter a rotation amount, in degrees.
Positive values rotate the image counter-clockwise, negative values rotate the image clockwise.
The Copy Rotate function makes a copy of the selection, rotates it, and pastes it back on top of the original. Pops open a dialog box which prompts for either a single value ' m ', or a pair of values ' m x n '. Each area is filled with the average color of all pixels contained within the area. Pops up a dialog box which prompts for either a single value ' m ', or a pair of values ' m x n '. In the case of the single value, each pixel in the image is swapped with some other random pixel located within a distance of m pixels from the first pixel.