ex_readfp
if (ex_readfp(sp, "filter", ofp, fm, &nread, 1))
if (ex_readfp(sp, "filter", ofp, tm, &nread, 1))
rval = ex_readfp(sp, name, fp, &cmdp->addr1, &nlines, 0);
int ex_readfp(SCR *, char *, FILE *, MARK *, recno_t *, int);