A.{支撑压力}  (来源：www.yz21.org 中国股票网)

Var1:=IF(DATE>=10201201,0,1);
Var2:=EMA(SLOPE(CLOSE,21)*20+CLOSE,55);
Var3:=EMA(CLOSE,3);
Var4:=(2*CLOSE+LOW+HIGH)/4*Var1;
Var5:=Var2-Var3;
风险线:EMA(Var4,45)*1.15;
必卖线:EMA(Var4,55)*1.3;
底线:EMA(Var4,40)*0.85;
铁底线:EMA(Var4,88)*0.7,colorred;
成本线:EMA(Var4,55),colorgreen;
持仓:STICKLINE(Var5>=0,Var3,Var2,0.5,0),linethick2;
减仓:STICKLINE(Var5<0,Var3,Var2,0.5,0),linethick2,coloryellow;
价值中枢: (成本线+底线)/2,colorffff00;