1845	 Loader Standardization for Overlay Programs	 The overlay capability is described for four of the third generation computer systems CDC- GE- IBM- and UNIVAC- . A critique of the first three systems is based on actual experience with a large overlaid trajectory simulation program a short history and description of this program is presented. A standardization of minimum capabilities for loaders is recommended so that programs which must operate under more than one computer system may be easily converted and maintained. A proposal that overlay software incorporates a memory occupation specification concept instead of the conditional tree structure is delineated. This concept provides more efficient and cost-effective utilization of the memory as well as increased flexibility in program structure. loader overlay partition region segmentation linkage linkage editor standardization memory utilization memory occupation tree structure CDC- GE- IBM- UNIVAC-
