AutoCAD 2007 OOPS Command

Command entry: oops

OOPS restores objects erased by the last ERASE command

You can also use OOPS after BLOCK or WBLOCK because these commands can erase the selected objects after creating a block. However, you cannot use OOPS to restore parameters, actions, or grips in the Block Editor.

You cannot use OOPS to restore objects on a layer that has been removed with the PURGE command.