（题外话：今天5月28日沪大盘跌6.5%）现在也适合波段操作：下图，红色区域：趋势线上穿底部，坚决买进。绿色区域：顶部，予以关注。
波段操作 发红包
{通达信波段操作发红包副图指标}
VAR1:=(CLOSE-LLV(LOW,20))/(HHV(HIGH,20)-LLV(LOW,20))*100;
VAR2:=SMA(VAR1,3,1);
VAR3:=SMA(VAR2,3,1);
VAR4:=3*VAR2-2*VAR3;
VAR5:=CROSS(VAR2,VAR3) AND VAR2<20;
VAR6:=CROSS(VAR3,VAR2) AND VAR2>80;
VAR7:=CROSS(VAR2,VAR4) AND VAR2<20;
VAR8:=CROSS(VAR4,VAR2) AND VAR2>80;
DRAWICON(VAR5,LOW*0.98,1);
DRAWICON(VAR6,HIGH*1.02,2);
DRAWICON(VAR7,LOW*0.96,1);
DRAWICON(VAR8,HIGH*1.04,2);
STICKLINE(VAR5,0,30,4,0),COLORRED;
STICKLINE(VAR6,70,100,4,0),COLORGREEN;
STICKLINE(VAR7,0,30,2,0),COLORYELLOW;
STICKLINE(VAR8,70,100,2,0),COLORBLUE;
DRAWTEXT(VAR5,15,'买'),COLORRED;
DRAWTEXT(VAR6,85,'卖'),COLORGREEN;
DRAWTEXT(VAR7,10,'加仓'),COLORYELLOW;
DRAWTEXT(VAR8,80,'减仓'),COLORBLUE;
