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{薛斯通道}
N:=20;
M:=40;
P:=60;
Q:=80;
UPPER1:MA(H,N)*1.05;
LOWER1:MA(L,N)*0.95;
UPPER2:MA(H,M)*1.1;
LOWER2:MA(L,M)*0.9;
UPPER3:MA(H,P)*1.15;
LOWER3:MA(L,P)*0.85;
UPPER4:MA(H,Q)*1.2;
LOWER4:MA(L,Q)*0.8;
DRAWKLINE(HIGH,OPEN,LOW,CLOSE);
