input: N(1,1,100);
A1:=ref(h,N)=hhv(h,2*N+1); 
B1:=filter(A1,N); 
C1:=backset(B1,N+1); 
D1:=filter(C1,n);A2:=ref(l,N)=llv(l,2*N+1); 
B2:=filter(A2,N);
C2:=backset(B2,N+1); 
D2:=filter(C2,N);
E1:=(ref(llv(l,2*N),1)+ref(hhv(h,2*N),1))/2; 
E2:=(h+l)/2;H1:=(D1 AND not(D2 AND E1>=E2)) OR barstatus=2 OR barscount(c)=1;
L1:=(D2 AND not(D1 AND E1<E2));  
H2:=D1 AND not(D2 AND E1>=E2);
X1:=ref(barslast(H1),1)+1; F1:=backset(H1 AND count(L1,X1)>0,llvbars
(if(L1,l,10000),X1));
G1:=F1>ref(F1,1); I1:=backset(G1,2); LD:=I1>ref(I1,1);
L2:=LD OR barstatus=2 OR barscount(c)=1;
X2:=ref(barslast(L2),1)+1; 
F2:=backset(L2 AND count(H2,X2)>0,hhvbars(if(H2,h,0),X2));
G2:=F2>ref(F2,1); I2:=backset(G2,2); HD:=I2>ref(I2,1);
R1:=backset(barstatus=2,barslast(HD)+1); S1:=R1>ref(R1,1); 
T1:=backset(barstatus=2,barslast(LD)+1); U1:=T1>ref(T1,1);
R2:=backset(S1,ref(barslast(HD),1)+2); S2:=R2>ref(R2,1);
T2:=backset(U1,ref(barslast(LD),1)+2); U2:=T2>ref(T2,1);
T3:=backset(U2,ref(barslast(LD),1)+2); U3:=T3>ref(T3,1);
T4:=backset(U3,ref(barslast(LD),1)+2); U4:=T4>ref(T4,1);
R3:=backset(S2,ref(barslast(HD),1)+2); S3:=R3>ref(R3,1); 
R4:=backset(S3,ref(barslast(HD),1)+2); S4:=R4>ref(R4,1); 
短期压力:drawline(S2,h,S1,h,1),Colorred;
短期支撑:drawline(U2,l,U1,l,1),Colorgreen;
中期压力:drawline(S3,h,S2,h,1),Coloryellow; 
中期支撑:drawline(U3,l,U2,l,1),Colorffcccc;    
长期压力:drawline(S4,h,S3,h,1),COLORwhite;
长期支撑:drawline(U4,l,U3,l,1),Colorff00ff;
DRAWICON(S1,H*1.01,10),ALIGN1;
DRAWICON(S2,H*1.01,10),ALIGN1; 
DRAWICON(S3,H*1.01,10),ALIGN1;
DRAWICON(S4,H*1.01,10),ALIGN1;
DRAWICON(U1,L*0.99,9),ALIGN1; 
DRAWICON(U2,L*0.99,9),ALIGN1;
DRAWICON(U3,L*0.99,9),ALIGN1;
DRAWICON(U4,L*0.99,9),ALIGN1;