System information
Reversing a series of Undo actions
When you reverse an Undo, you also reverse  all Undo actions above it in the list.
1.  Click the arrow    next to Redo  button  . A list of the most recent actions that you can redo is 
displayed.
2.  Select the action you want  to redo. If the action does not appear in the list, use the scroll bar  to 
scroll through the list. The selected action and all actions above  it are redone.
Undoing all edits
From the Edit menu, choose Undo  All to reverse all edits in the undo history.
You can view the edit history by clicking the arrow    next to Undo  button   .
Clearing the edit history
From the Edit menu, choose Clear  Edit History to clear all of the entries in the Undo/Redo History  list for the 
current project.
The edit history is also cleared when you close your project.
You will not be able undo or redo any previous   changes after clearing the history. 
Rebuild Audio Peaks
From the View menu, choose  Rebuild Audio Peaks  to rebuild peak  files  (.sfk) for all audio events in your 
project.  
Zooming and magnification
Use the controls in the lower-left corner of the timeline to change  the magnification level of your project.
Tips:
n 
Double-clicking  the Zoom Tool button     in the corner of the timeline adjusts the horizontal 
and vertical magnification  so that as much of the project is displayed as possible.
n  Roll the  mouse wheel forward or back to zoom out or in quickly.
Zoom in to track height
n 
Click the Zoom In Track Height button   to increase the track height zoom level to show more 
event detail.
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