1st [Enter] - Confirm 2nd [Enter] - Terminate
[Spacebar] = [Enter ]
Press [Spacebar] or [Enter] when Command Line is empty - Repeats last command
[TAB] - Move from field to field
Main points for AutoCAD 2009 Essential. The topics cover here are follow the Autodesk Official Training Courseware AOTC. You can take this as the revision of the training course