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An 88 level-number declares a condition name (a so-called 88-level) which is true when its parent data item contains one of the values specified in its VALUE clause. [142] For example, the following code defines two 88-level condition-name items that are true or false depending on the current character data value of the wage-type data item.
COBOL. In fixed format code, line indentation is significant. Columns 1–6 and columns from 73 onwards are ignored. If a * or / is in column 7, then that line is a comment. Until COBOL 2002, if a D or d was in column 7, it would define a "debugging line" which would be ignored unless the compiler was instructed to compile it. Cobra
Use of IBM COBOL was so widespread that Capex Corporation, an independent software vendor, made a post-code generation phase object code optimizer for it. [3] The Capex Optimizer became a quite successful product. [4] Although the IBM COBOL Compiler Family web site [5] only mentions AIX, Linux, and z/OS, IBM still offers COBOL on z/VM and z/VSE.
A single program deck, with individual subroutines marked. The markings show the effects of editing, as cards are replaced or reordered. Many early programming languages, including FORTRAN, COBOL and the various IBM assembler languages, used only the first 72 columns of a card – a tradition that traces back to the IBM 711 card reader used on the IBM 704/709/7090/7094 series (especially the ...
The format of assembler language statements reflects the layout of an 80-column punched card, though successive versions have relaxed most of the restrictions. The optional statement label or name is a string alphanumeric characters beginning in column 1. The first character has to be alphabetic.
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 ...
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Columns 1, 2, and 3 of a JCL comment statement contain //* Name-Field: The name field identifies a particular statement so that other statements and the system can refer to it. For JCL statements, it should be coded as follows: The name must begin in column 3. The name is 1 through 8 alphanumeric or national ($, #, @) characters.