网友求助:
	买线:EMA(C,2),COLORRED,LINETHICK1;
	卖线:EMA(SLOPE(C,21)*21+C,42),POINTDOT,COLORYELLOW;
	买:=CROSS(买线,卖线);
	卖:=CROSS(卖线,买线);
	DRAWTEXT(买,LOW-0.1,'▲B'),COLORF00FF0,LINETHICK5;
	DRAWTEXT(卖,HIGH+0.1,'▼S'),COLORWHITE,LINETHICK5;
	STICKLINE(买线>=卖线,LOW,HIGH,0.1,1),COLORRED;
	STICKLINE(买线>=卖线,CLOSE,OPEN,2,1),COLORRED;
	STICKLINE(买线<卖线,CLOSE,OPEN,2,0),COLORGREEN;
	STICKLINE(买线<卖线,LOW,HIGH,0.1,1),COLORGREEN;
	STICKLINE(CROSS(买线,卖线) OR CROSS(卖线,买线),OPEN,CLOSE,2,0),COLORRED;
	 
解答如下:
	买线:EMA(C,2),COLORRED,LINETHICK1;
	卖线:EMA(SLOPE(C,21)*21+C,42),COLORYELLOW;
	买:=CROSS(买线,卖线);
	卖:=CROSS(卖线,买线);
	DRAWTEXT(买,LOW-0.1,'▲B'),COLORF00FF0,LINETHICK5;
	DRAWTEXT(卖,HIGH+0.1,'▼S'),COLORWHITE,LINETHICK5;
	STICKLINE(买线>=卖线,LOW,HIGH,0.1,1),COLORRED;
	STICKLINE(买线>=卖线,CLOSE,OPEN,2,1),COLORRED;
	STICKLINE(买线<卖线,CLOSE,OPEN,2,0),COLORGREEN;
	STICKLINE(买线<卖线,LOW,HIGH,0.1,1),COLORGREEN;
	STICKLINE(CROSS(买线,卖线) OR CROSS(卖线,买线),OPEN,CLOSE,2,0),COLORRED;