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File No. S360-25
Form GY28-6831-2




Program LogiC




IBM System/360 Operating System

FORTRAN IV Syntax Checker


Program Number: 360S-PO-550


This publication describes the internal logic
of the FORTRAN IV Syntax Checker, which is a
component of the IBM System/360 Operating System
Conversational Remote Job Entry (CRJE) and of the
Time Sharing option (TSO) of System/360 Operating
System. Thus, the reader is required to have a
knowledge of FORTRAN IV and an understanding of
the concepts and facilities of CRJE and/or TSO.
The publication identifies areas of the syntax
checker that perform specific functions and
relates those areas to the program listings.

The FORTRAN IV Syntax Checker, a processing
program called via the terminal command language
of CRJE or TSO scans input written for the E, G,
Gl, H, or Code and Go levels of the FORTRAN. l;V
language for syntactical errors. The input is
checked on a single-statement basis, i. e., no
cross-checking between statements is performed.
The syntax checker: