How to Use the History Options Dialog Box in Photoshop CS6
In Adobe Photoshop Creative Suite 6, the History panel has five options that change its behavior. To access these options, select History Options from the History panel pop-up menu, which opens the History Options dialog box.
|Option||What It Does||Recommended Setting|
|Automatically Create First Snapshot||This option, selected by default, tells Photoshop to create a
snapshot of the image when you first open it, before you make any
changes. You can return to this snapshot at any time by clicking
its name in the History panel.
|Checked. Consider it free insurance — you can always
return to your original image, if necessary.
|Automatically Create New Snapshot When Saving||This option tells Photoshop to create a new snapshot each time
you save the image.
|Depends. If you like to save every couple of minutes, you
probably don’t want to select this option; otherwise, you end
up with a panel filled with unwanted snapshots.
|Allow Non-Linear History||Selecting this option lets you edit or delete a state without
removing all the states that follow it. When the Non-Linear History
capability is active, you can edit an intermediate state in the
history list, leaving the other steps below it unchanged.
|Unchecked. Use this option with caution because steps are
interdependent. A change that you remove may form the basis for
another edit later on, so deleting it can cause weird results.
|Show New Snapshot Dialog by Default||This option ensures that Photoshop asks you to name any new
snapshot that you create.
|Checked. Applying names to snapshots makes remembering the
state of the image when you saved the snapshot easy. Even if this
option is unchecked, however, you can still access the dialog box
by pressing the Alt (Option on the Mac) key when you click the
|Make Layer Visibility Changes Undoable||This option records the toggling on and off of the visibility
of your layers.
|Unchecked. Showing and hiding layers doesn’t affect image