168   gp_Vec dnplan,d1u1,d1v1,d1,temp,ns,ns2,ncrossns,resul;  in IsSolution()  local
183     dnplan.SetLinearForm(1./normtg,d2gui,  in IsSolution()
187     secmember(1) = normtg - dnplan.Dot(temp);  in IsSolution()
190     secmember(2) = normtg - dnplan.Dot(temp);  in IsSolution()
197     grosterme = ncrossns.Dot(dnplan.Crossed(ns))/norm/norm;  in IsSolution()
198     temp.SetLinearForm(ray/norm*(dnplan.Dot(ns)-grosterme*ndotns),nplan,  in IsSolution()
199 		       ray*ndotns/norm,dnplan,  in IsSolution()
577   gp_Vec ns,dnplan,dnw,dn2w,ncrn,dncrn,ns2;  in GetSection()  local
590   dnplan.SetLinearForm(1./normtg,d2gui,  in GetSection()
601   secmember(1) = normtg - dnplan.Dot(temp);  in GetSection()
604   secmember(2) = normtg - dnplan.Dot(temp);  in GetSection()
613   grosterme = ncrossns.Dot(dnplan.Crossed(ns))/norm/norm;  in GetSection()
614   dnw.SetLinearForm((dnplan.Dot(ns)-grosterme*ndotns)/norm,nplan,  in GetSection()
615 		     ndotns/norm,dnplan,  in GetSection()
656       dnplan.Reverse();  in GetSection()
676       dncrn = dnplan.Crossed(ns).Added(nplan.Crossed(dnw));  in GetSection()
882   gp_Vec ns,ns2,dnplan,dnw,dn2w; //,np2,dnp2;  in Section()  local
901   dnplan.SetLinearForm(1./normtg,d2gui,  in Section()
913   secmember(1) = normtg - dnplan.Dot(temp);  in Section()
916   secmember(2) = normtg - dnplan.Dot(temp);  in Section()
925   grosterme = ncrossns.Dot(dnplan.Crossed(ns))/norm/norm;  in Section()
926   dnw.SetLinearForm((dnplan.Dot(ns)-grosterme*ndotns)/norm,nplan,  in Section()
927 		     ndotns/norm,dnplan,  in Section()
1005     dnplan.Reverse();  in Section()
1011 			       nplan, dnplan,   in Section()