Adobe 23101335 User Guide - Page 78

Correcting mistakes, the Keyboard Zoom Resizes Windows preference.

Page 78 highlights

68 CHAPTER 1 Looking at the Work Area To automatically resize the window when magnifying or reducing the view using keyboard shortcuts: Choose Edit > Preferences > General, then select the Keyboard Zoom Resizes Windows preference. Correcting mistakes Most operations can be undone if you make a mistake. Alternatively, you can restore all or part of an image to its last saved version. But available memory may limit your ability to use these options. For information on how to restore your image to how it looked at any point in the current work session, see "Reverting to any state of an image" on page 69. To undo the last operation: Choose Edit > Undo. If an operation can't be undone, the command is dimmed and changes to Can't Undo. To redo the last operation: Choose Edit > Redo. You can set the Redo keystroke preference to be the same for Photoshop and ImageReady. Choose Edit > Preferences > General and select a preference for the Redo key. You can also set the key to toggle between Undo and Redo. To free memory used by the Undo command, the History palette, or the Clipboard: 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. To revert to the last saved version: Choose File > Revert. Note: Revert is added as a history state in the History palette and can be undone. To restore part of an image to its previously saved version (Photoshop): Do one of the following: • Use the history brush tool ( ) to paint with the selected state or snapshot on the History palette. For more information, see "Painting with a state or snapshot of an image (Photoshop)" in online Help. • Use the eraser tool ( ) with the Erase to History option selected. For more information, see "Using the eraser tool" in online Help.

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CHAPTER 1
68
Looking at the Work Area
To automatically resize the window when magnifying
or reducing the view using keyboard shortcuts:
Choose Edit > Preferences > General, then select
the Keyboard Zoom Resizes Windows preference.
Correcting mistakes
Most operations can be undone if you make a
mistake. Alternatively, you can restore all or
part of an image to its last saved version.
But available memory may limit your ability
to use these options.
For information on how to restore your image to
how it looked at any point in the current work
session, see “Reverting to any state of an image” on
page 69.
To undo the last operation:
Choose Edit > Undo.
If an operation can’t be undone, the command is
dimmed and changes to Can’t Undo.
To redo the last operation:
Choose Edit > Redo.
You can set the Redo keystroke preference to be
the same for Photoshop and ImageReady.
Choose Edit > Preferences > General and select a
preference for the Redo key. You can also set the key
to toggle between Undo and Redo.
To free memory used by the Undo command, the
History palette, or the Clipboard:
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.
To revert to the last saved version:
Choose File > Revert.
Note:
Revert is added as a history state in the History
palette and can be undone.
To restore part of an image to its previously saved
version (Photoshop):
Do one of the following:
Use the history brush tool (
) to paint with the
selected state or snapshot on the History palette.
For more information, see “Painting with a
state or snapshot of an image (Photoshop)”
in online Help.
Use the eraser tool (
) with the Erase to History
option selected.
For more information, see “Using the eraser
tool” in online Help.