自编均线+简单BOLL主图，很直观！！买卖提示！

MA5:MA(CLOSE,5);
MA10:MA(CLOSE,10);
MA30:MA(CLOSE,30);
MA60:MA(CLOSE,60);
MA120:MA(CLOSE,120);
MA250:MA(CLOSE,250);
N:=20;
中轨:=MA(CLOSE,N);
上轨:=中轨+2*STD(CLOSE,N);
下轨:=中轨-2*STD(CLOSE,N);
DRAWICON(LOW<=下轨,LOW,1);{把LOW改成LOW-1，主图就压缩了}
DRAWICON(HIGH>=上轨,HIGH,2);{同上}