Controls how you create selection sets
At a prompt to select objects, enter one of the valid selection modes described in the SELECT command
Valid modes include: Window/Last/Crossing/BOX/ALL/Fence/WPolygon/CPolygon/Group/Add/Remove/Multiple/Previous/Undo/AUto/SIngle/SUbobject/Object
The selection mode you enter remains active only for the current Select Objects prompt.