编写条件：
请教老师怎么把大盘K线作为附图指标？请老师出手编个指标编写方法：
DRAWKLINE(INDEXH,INDEXO,INDEXL,INDEXC);
大盘:INDEXC,COLORWHITE,NODRAW;
X:INDEXC-REF(INDEXC,1),COLORLIGRAY,NODRAW;
沪深:"000300$CLOSE",NODRAW;
Y:"000300$CLOSE"-REF("000300$CLOSE",1),COLORLIGRAY,NODRAW;
MA5:MA(INDEXC,5),COLORFFFFFF;
MA10:MA(INDEXC,10),COLOR00FFFF;
MA20:MA(INDEXC,20),COLORFF00FF;
MA60:MA(INDEXC,60),COLOR00FF00;
