w = rset_create (rset_kind_temp, &parms);
wfd = rset_open (w, RSETF_WRITE|RSETF_SORT_SYSNO);
rfd = rset_open (*r, RSETF_READ|RSETF_SORT_SYSNO);
w = rset_create (rset_kind_temp, &parms);
wfd = rset_open (w, RSETF_WRITE|RSETF_SORT_SYSNO);
rfd = rset_open (*r, RSETF_READ|RSETF_SORT_SYSNO);