A:=(CLOSE-LLV(LOW,8))/(HHV(HIGH,8)-LLV(LOW,8))*100;
趋势线: (EMA(A,3)-50)*2; 极弱:-80; 强势:60; 风险:80; 弱势:-60;
DRAWICON(CROSS(趋势线,弱势),极弱,5); DRAWICON(CROSS(60,趋势线),强势,6);
