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PRSNOI

       INTEGER FUNCTION  PRSNOI (STATUS, STRING, LENGTH)
 C$    (Parse - Noise String)
 C$    Parse a noise string, leaving it in COMMON.  The  arguments
 C$    are:
 C$
 C$    STATUS.........Parsing status  value (and  function  value)
 C$                   returned; one  of  NOPABT,  NOPIFL,  NOPIGW,
 C$                   NOPUNK, OKAY,  OVRFLO,  or REPARS.   If  the
 C$                   returned  value  is  not  OKAY,  the   input
 C$                   pointer is backed up to its value at  entry,
 C$                   allowing a retry with another field type.
 C$    STRING(*)......Packed Hollerith  noise string.   The  noise
 C$                   string  does  NOT  include  the  surrounding
 C$                   parenthesis which appear when it is typed.
 C$    LENGTH.........Length of STRING(*).
 C$    (10-OCT-84)