The Undo command allows you to cancel the effects of the last command given while in the graphics display area. In other words, you can take back any action that creates or modifies AGi32 entities. Example: Undo will reverse the Modify-Luminaire-Re Aim command, but will not undo a View-Elevation command.
The command subject to the Undo action is shown following the Undo command in the Edit Menu. An unlimited number of Undos are available until the job file is saved. When the job file is saved, the available Undo actions are purged.
From the Edit
menu choose Undo, or from the
Common toolbar select 
, or press Ctrl-Z.
If you are unsure of what action is going to be undone, open the Edit menu. The Undo action is appended to the Undo command.