and the address of the first "text record", which is different from the address of the first member data. Executable programs are written to libraries by the linkage editor and loaded into user-acquired storage by the Loader (an application program) or into system-acquired storage by Program Fetch (a component of the OS supervisor). The Linkage Editor organizes a load module in a specialized format consisting of alternating "text records" and "control/relocation dictionary records". This organization allows a load module to be completely loaded and relocated with one input/output operation by Program Fetch (EXCP on pre-MVS systems, or STARTIO on MVS/370 and later systems). References IBM mainframe operating systems Computer file systems