源代码：
mid=(3*close+low+open+high)/6;
牛线=(20*mid+19*refBefore(mid,1)+18*refBefore(mid,2)+17*refBefore(mid,3)+16*refBefore(mid,4)+15*refBefore(mid,5)+14*refBefore(mid,6)+13*refBefore(mid,7)+12*refBefore(mid,8)+11*refBefore(mid,9)+10*refBefore(mid,10)+9*refBefore(mid,11)+8*refBefore(mid,12)+7*refBefore(mid,13)+6*refBefore(mid,14)+5*refBefore(mid,15)+4*refBefore(mid,16)+3*refBefore(mid,17)+2*refBefore(mid,18)+refBefore(mid,20))/210;
draw(牛线,color="red");
马线=ma(牛线,6);
draw(马线,color="green");
五日线=ma(close,5);
draw(五日线,color="#liblue");
水平面=ma(close,60);
draw(水平面,color="yellow");
