To free memory used by the Undo command, the History palette, or the Clipboard (Photoshop):

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Choose Edit > Purge, and choose the item type or buffer you want to clear. If already empty, the item type or buffer is dimmed.

Important: The Purge command permanently clears from memory the operation stored by the command or buffer; it cannot be undone. For example, choosing Edit > Purge > Histories deletes all history states from the History palette. Use the Purge command when the amount of information held in memory is so large that Photoshop's performance is noticeably diminished.

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  • Sirpa
    Which command lets you free memory used by the undo command the history palette or the clipboard?
    8 years ago

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