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x/ zvipone

status = xvipone(name, value, instance, maxlen)
status = zvipone(name, value, instance, maxlen);

Interactive version of x/ zvpone.

This routine returns a single value from a multivalued interactive parameter. It is most useful to get a string from a list of strings without having to mess with string arrays, but can be used for integer or real (single-precision) values as well. Note that xvipone is a Fortran function with a status return, which differs from most Fortran RTL routines.