subroutine i25buc_vox1(x, irect, nsv, bumult, nmn, nrtm, nsn, intbuf_tab, gap, i_stok, dist, tzinf, maxbox, minbox, msr, stf, stfn, iddlevel, gap_s, gap_m, igap, gapmin, gapmax, inacti, gap_s_l, gap_m_l, marge, id, titr, nbinflg, mbinflg, ilev, msegtyp, gap_n, bgapsmx, iparts, knod2els, nod2els, kremnode, remnode, ixs, ixs10, ixs16, ixs20, icode, iskew, drad, dgapload, nrtmt, flag_removed_node, ielem_m, nin, npari, ipari)