送免费简单实用指标，简简单单俩根线，双线持有，单线空仓，大波段买卖点可以结合30和60K线

持仓参考

A:=MA(C,30);

A1:=A*1.1;

A4:=A*0.9;

A2:=A1-(A1-A4)*0.191;

持仓:IF(HIGH*1.01>A2 OR REF(HIGH,1)>REF(A2,1),A1,A4),LINETHICK3,COLOR00FF00;

IF(HIGH*1.01>A2 OR REF(HIGH,1)>REF(A2,1),A2,A4),LINETHICK3,COLORFFFFFF;