I don’t usually take advantage of the modern conveniences of cartooning. I seldom cut and paste art. I laboriously and slavishly just draw a scene again if need be, although Arlo & Janis can be (Let’s face it!) rather static. The last two panels in this old A&J are an exception. They’re identical, because it enhances the joke. This, I think, is an acceptable use of Photoshop, or whatever.