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To set the options for the history panel, mouse down on the fly-out menu and select History Options. Note that if you reduce the number of history states allowed via the Preferences, any subsequent action will immediately cause all earlier states beyond this new limit to be discarded.įigure 2The number of history states can be set via the Performance section of the Photoshop preferences dialog. When the maximum number of history states has been reached, the earliest history state at the top of the list will be discarded. The number of recorded histories can be set in the Photoshop Performance preferences (see Figure 2). When you make further edits to the image, the dimmed history states after the selected history state will become deleted (you can change this behavior by selecting Allow Non-linear History in the History panel options). When the History panel is set to its default configuration, you will notice how the history states that appear after the one selected will be dimmed.
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In Figure 1 below, I carried out a simple one-step undo by clicking on the one but last history step.įigure 1 A previous history state can be selected by clicking on the history state name in the History panel. To select a previous state, just click to select the desired history state to make it active. The History panel displays the sequence of Photoshop states recorded during a Photoshop session and its main purpose is to let you manage and access the history states recorded by Photoshop.