{仿镊子线}
AL点:=L=REFX(L,1) OR L=REFX(L,2) OR L=REFX(L,3) OR L=REFX(L,4) OR L=REFX(L,5);
BL点:=BARSLAST(AL点)>0 AND L=REF(L,BARSLAST(AL点));
DRAWLINE(AL点,L,BL点,L,0);
AH点:=H=REFX(H,1) OR H=REFX(H,2) OR H=REFX(H,3) OR H=REFX(H,4) OR H=REFX(H,5);
BH点:=BARSLAST(AH点)>0 AND H=REF(H,BARSLAST(AH点));
DRAWLINE(AH点,H,BH点,H,0);