ArcSoft SHOWBIZ 2 - Manual (Page 62)

Chapter 6: Menus
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6.2 Edit
The following commands are available under the Edit menu:
Undo – Reverses the last command.
Redo – Reverses the last Undo command.
Cut – Removes the selected component and stores it in memory.
Copy – Places a copy of the selected component in memory.
Paste – Places the contents of the previous Cut or Copy command
into the selected location.