Chapter 8. History
In this chapter you’ll learn how to use the History palette to selectively undo up to 1,000 previous stages (called “states”) of a work session. You’ll also learn how to restore selective areas to a prior state using the History Brush or Art History Brush tool, by filling a selection with a history state, and by erasing to a history state.
The History palette displays a list of the most recent states (edits) that were made to an image, with the bottommost state being the most recent. Clicking on a prior state restores the image to that stage of the editing process. What happens to the image when you do this depends on whether the palette is in linear or non-linear mode, so the first step is to learn the difference between these ...
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