在MACD上金叉时显示买字，死叉时显示卖字 编写条件：编写方法：DIF:EMA(CLOSE,S12-EMA(CLOSE,26);DEA:EMA(DIF,9);:(DIF-DEA)*2,COLORSTICK;DRAWTEXT(OSS(DIF,DEA),DIF,'买'),COLORRED;DRAWTEXT(CROSS(DEA,DIF),DEA,'卖'),COLOR88FF00;