The ASN command assigns the logical device name LL: to a physical device PP:. In addition it can either display all logical assignments, delete specific assignments, or delete all logical assignments. Files, and terminal I/O may be directed to a logical device instead of a physical device. ASN Displays all logical assignments ASN PP:=LL: Assigns logical device LL: to physical device PP: ASN =LL: Deletes the logical assignment LL: ASN = Deletes all logical assignments.  example: use a shot data disk normally on DK2(where the report programs expect it to be) which is on DK4:. ASN DK4:=DK2: