吃.吐为快线，母子带为趋势.
V1:=(C*2+H+L)/4*10;
V2:=EMA(V1,13)-EMA(V1,34);
V3:=EMA(V2,2);
V4:2*(V2-V3)*5.5;
吃: IF(V4 =0,V4,0),COLOR7F00FF,LINETHICK3;
吐: IF(V4 =0,V4,0),COLOR66FFF0,LINETHICK2;
母:MA(V3,1);
子:REF(母,3);
DRAWBAND(子,RGB(0,255,0),母,RGB(255,0,0));
