用反K线抄底，正K线底点与反K线高点离得越近，安全性越高

反K线代码：
MF1:MA(-C,5);
MF2:MA(-C,10);
MF3:MA(-C,20);
STICKLINE(C<REF(C,1),-H,-L,0,1),COLORRED;
STICKLINE(C>=REF(C,1),-H,-L,0,1),COLORCYAN;
STICKLINE(C<REF(C,1),-C,-O,3,1),COLORRED;
STICKLINE(C>=REF(C,1),-C,-O,3,0),COLORCYAN;