can anyone explain the difference between these two tranform commands? I can't figure it out
"Distort" is free form, you always move any vertice any direction at any time.
"Skew" is a little more formalized in that it tries to be orthogonal, preferring to restrict vertice movement to strictly vertical or strictly horizontal, or in a slight variation on orthogonal, only along one of the marching ants boundaries.
I usually use "Distort" with the grid turned on as an orthogonal reference. Maybe "skew" is better for certain kinds of technical work where precise ratios or geometries already exist in the photo and need to modified in a geometrically systematic way. Or maybe it's a left-brain / right-brain kind of thing.
