Photoshop action to automatically duplicate item before editing
Using Photoshop I often mistakenly saved my original photo/document after working on it. Alas! I could never change my mind or do something different to the original. I designated a function key to perform an easy action to 1-copy the original, 2 open a new window, and 3- paste into the new window. I only work on this copy. My original is never touched beyond this.