Specifications

Chapter 24: Editing Basics 529
To redo operations in the Undo History window:
 Click the operation (italics) in the list to redo.
The operation you choose, as well as all the opera-
tions in the queue before it, are redone.
To toggle display of creation times in the Undo
History window:
 Click the Options pop-up menu and choose
Show Creation Times.
To undo all the operations in the Undo Queue:
 Click the Options pop-up menu and choose
Undo All.
To redo all the operations in the Redo Queue:
 Click the Options pop-up menu and choose
Redo All.
Clearing the Undo Queue
To manually clear the Undo Queue
 Click the Options pop-up menu and choose
Clear Undo Queue.
Other operations that clear the Undo Queue in-
clude:
• Deleting a track, or clearing a clip from the Clip
List
• Selecting
Select > Unused, or Select > Unused
Audio Except Whole Files
in the Clip List menu
When the number of operations in the Undo His-
tory reaches the maximum level of Undo, perform-
ing another undoable operation removes the oldest
operation at the top of the Undo History queue.
When the oldest operation is one operation away
from being pushed out of the queue, it is shown in
red.
Levels of Undo and Memory
Because Pro Tools needs to keep track of the play-
lists for all tracks that are edited, the use of multi-
ple levels of Undo can be memory intensive. You
can lower the
Levels of Undo setting (Editing Pref-
erences) in Pro Tools to reduce the amount of sys-
tem memory (RAM) used by the Undo queue. If
you have plenty of memory available for
Pro Tools, you can use a higher
Levels Of Undo
setting.
To set the Levels of Undo in Pro Tools:
1 Choose Setup > Preferences and click the
Editing tab.
2 Click in the Levels of Undo field and type a
value between 1–32.
3 Click OK.
Use the Undo History window to view a
queue of undo operations and return to a pre-
vious state.
Levels of Undo preference