Edit Palette
From ZBrush Info
The Edit palette controls undo and redo operations. It can actually undo or redo two types of operations seperately; edits on the canvas, or edits on tools.
[edit]
Controls
UNDO: Undoes drawing operations, i.e. operations that affect pixols on the canvas. If you are modeling, this control is not available.
REDO: If you have just performed one or more Edit:UNDO operations, REDO will let you cancel them.
Tool:Undo: Allows you to undo operations on tools. This includes not only sculpting operations, but also changes made using settings such as those in Tool:Deformation.
Tool:Redo: Allows you to cancel Edit:Tool:Undo operations.
Note: The Undo and Redo operations may be hidden if neither can be applied.
