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Name Description HED: Heading: Separates programs, possibly written separately, which are being assembled together. It can specify a character to be appended to symbol names in this section to avoid naming conflicts. REL: Relocatable Library Program: Defines the start of a relocatable library program being assembled ahead of the main program.
The optional statement label or name is a string alphanumeric characters beginning in column 1. The first character has to be alphabetic. Later versions added @, #, $, and _ to the legal characters used in labels, and increased the size from the initial six, to eight characters, then to almost unlimited lengths.
It is used in character data on IBM mainframes by languages such as COBOL, PL/I, and RPG. [1] Its purpose is to save a character that would otherwise be used by the sign digit. [2] The code is derived from the Hollerith Punched Card Code, where both a digit and a sign can be entered in the same card column. It is called an overpunch because the ...
The Symbolic Assembly Program (SAP) is an assembler program for the IBM 704 computer. It was written by Roy Nutt at United Aircraft Corporation, and was distributed by the SHARE user's group beginning in 1956 as the Share Assembly Program .
IEFBR14 was created because while DD statements can create or delete files easily, they cannot do so without a program to be run due to a certain peculiarity of the Job Management system, which always requires that the Initiator actually execute a program, even if that program is effectively a null statement. [2]
An early version was called Structured Programming Facility (SPF) and introduced in SVS and MVS systems in 1974. [4] IBM chose the name because SPF was introduced about the same time as structured programming concepts. In 1979 IBM introduced a new version and a compatible product for CMS [5] under Virtual Machine Facility/370 Release 5.
Originally developed by IBM in 1959, the name Report Program Generator was descriptive of the purpose of the language: generation of reports from data files. [12] FOLDOC accredits Wilf Hey with work at IBM that resulted in the development of RPG. [13] FARGO (Fourteen-o-one Automatic Report Generation Operation) was the predecessor to RPG on the ...
The Control Language (CL) is a scripting language originally created by IBM for the System/38 Control Program Facility [1] and later used in OS/400 (now known as IBM i). It bears a resemblance to the IBM Job Control Language and consists of a set of command objects (*CMD) used to invoke traditional programs or get help on what those programs do.