The
Nf
parameter enables range filter functionality.
Unlike a record filter, the
Nf
parameter does not act as a prefilter. Instead, when
used with the
Nrs
parameter, the resulting record set will be an
intersection of the results of the
Nf
and
Nrs
parameters. That is, an
Nf
range filter and an EQL filter together form an AND
Boolean request. For more information about range filters, see “Using Range
Filters.”