A1:=REF(H,N)=HHV(H,2*N+1); A2:=BACKSET(A1,N+1); A3:=FILTER(A2,N) AND H=HHV(H,N+1); A4:=BARSLAST(A3); DRAWICON(A3,H*1.02,10); A5:=REF(A3,1); A6:=BARSLAST(A5); A7:=A3 DRAWLINE(A6,H,A4,H,1);