通达信主力进出副图，吃定主力源码

A:=VOL*CLOSE; B:=SUM(A,1)/SUM(VOL,1); B1:=EMA(B,17); 主力:(B-B1)*100/B,COLORRED; 进:STICKLINE(主力 =0 AND 0 =REF(0,1),0,主力,3,0),COLORRED; 出:STICKLINE(主力 0 AND 0 =REF(0,1),0,主力,3,0),COLORGREEN;