Apple Logic Express 8 - Manual (Page 531)

Chapter 21 Editing Audio in the Sample Editor 531
 Clear Undo History when quitting: Switch this on to automatically delete the Undo
History for all edited audio files, when you quit Logic Express.
 Record selection changes in Undo History: Switch on if you wish to undo and redo
changes to selected areas in the Sample Editor.
 Record Normalize operations in Undo History: Turn off if you don’t want to create any
undo files once the Normalize function is invoked. As normalization is generally the
last step in sample editing, this parameter (if active) can destroy the undo history. As
a safety feature, a warning pops up if an undo history exists (and the switch is on),
providing you with the opportunity to create an undo file.
 Number of Undo Steps: Sets the maximum number of undo steps.
 Store undo files in project folder: Switch this parameter on (on by default) if you would
like the Undo History to be stored in a sub-folder of the current project.
 Global Undo File Path: All Undo History files are saved into a global location (a user-
defined folder) if the “Store undo files in project folder” option is not switched on.
Creating Manual Backups
You can make manual backups of the file you’re editing, or replace it with a backup
version at any time—using a variety of functions.
Although the Undo History and standard Undo functions are available, it’s a good
working practice to create backups before processing or editing. This provides a safety
copy of your precious audio recordings, should something unexpected happen, due to
a processing error or other unforeseen event.
To duplicate the audio file you’re working on:
m Choose Audio File > Create Backup (default key command: Command-B)
This creates a copy of the audio file (with the extension .dup) in the same folder as the
source file.
To revert to a backup file:
m Choose Audio File > Revert to Backup (default key command: Shift-Command-B).
This function completely replaces the current audio file with the backup (provided one
exists, of course).
Important: You can not reverse this function with Undo.