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COBOL and PL/I also have a system-independent method of specifying printer controls. The compiler or run-time will translate these options into the appropriate control character. The compiler or run-time will translate these options into the appropriate control character.
GnuCOBOL (formerly known as OpenCOBOL, and briefly as GNU Cobol) is a free implementation of the COBOL programming language that is part of the GNU project. GnuCOBOL translates the COBOL code into C and then compiles it using the native C compiler .
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.
COBOL uses the picture character 'S' for USAGE IS DISPLAY data without SIGN IS SEPARATE CHARACTER to indicate an overpunch. SIGN IS LEADING indicates that the overpunch is over the first character of the field. SIGN IS TRAILING, locates it over the last character. SIGN IS TRAILING is the default. [7]
Several elements of COMTRAN were incorporated into COBOL: Picture clause. Paragraphing: dividing code into paragraphs (with line breaks not significant). Paragraph names. Assigning names to paragraphs, and jumps (GO TO's) are to a paragraph name, not to a line number. AT END clause on file input operations. Figurative constant HIGH-VALUE.
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Job Control Language (JCL) is a scripting language used on IBM mainframe operating systems to instruct the system on how to run a batch job or start a subsystem. [1] The purpose of JCL is to say which programs to run, using which files or devices [2] for input or output, and at times to also indicate under what conditions to skip a step.
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