我想把美国线左边的开盘价去掉，应该怎么修改啊？我从文华移植过来的。谢谢。DRAWSL(BARSLAST(C>REF(C,1))<BARSLAST(C<REF(C,1)),C,0,0.35,0,COLORRED),LINETHICK2;

DRAWSL(BARSLAST(C>REF(C,1))>BARSLAST(C<REF(C,1)),C,0,0.35,0,COLORCYAN),LINETHICK2;

DRAWLINE(BARSLAST(C>REF(C,1))<BARSLAST(C<REF(C,1)),L,1,H,COLORRED),LINETHICK2;

DRAWLINE(BARSLAST(C>REF(C,1))>BARSLAST(C<REF(C,1)),H,1,L,COLORCYAN),LINETHICK2;