Helicon Soft Forum

I tried searching for documentation regarding the 3 types of undos for retouching:
Brush, stroke and point.
Would someone kindly direct me to documentation on the differences between these.
Thanks

A point is just one (last) application of the brush. If you single-click your mouse button in retouching mode, that's a point.
A stroke is when you click and move your mouse to paint a line. A stoke ends when you release the left mouse button, and consists of a series of points.
"Undo brush" reverts all the changes made by the last active brush. "Copy from source" with different source images is different brushes.

P. S. You're right that it's not explained in the manual, thanks for pointing it out, we will improve the documentation.