Undo All

Menu: Edit > Undo All

Default Shortcut Key: none

Macro function: UndoAll()

The Undo All command can be used to reverse the effect of all changes for which undo information is available.  Unless you feel sure about the number of changes which have been recorded by Undo, it is often safer to use the Undo command to step singly through the changes so that their effect can be seen on-screen before proceeding.  Should the Undo All command go 'too far', the  Redo Allcommand can be used to reverse its effect, or the Redo command can be used to restore the changes one at a time.