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INTEGER FUNCTION PRSBGF (STATUS)
C$ (Parse Internal - Begin Field)
C$ After any white space has been flushed, this routine should
C$ be called to initiate the beginning of a parse of a single
C$ field type. It updates the recognition flags and takes
C$ care of the opening of any indirect command file. On
C$ return, the function value and STATUS are set to OKAY, or
C$ if an indirect file open failed, to NOPIFL. In the latter
C$ case, the input pointer is repositioned to its value at
C$ entry.
C$ (25-APR-84)