SHORT:=7;LONG:=19;
MA5:MA(CLOSE,5);
MA13:MA(CLOSE,13);
MA21:MA(CLOSE,21);
MA34:MA(CLOSE,34);
MA55:MA(CLOSE,55);
MA89:MA(CLOSE,89);
MA144:MA(CLOSE,144);
MA233:MA(CLOSE,233);
T:=PERIOD;

DIFF:EMA(CLOSE,12)-EMA(CLOSE,27);
DEA:EMA(DIFF,9);
MACD:2*(DIFF-DEA), COLORSTICK,LINETHICK2;
A1:=BARSLAST(REF(CROSS(DIFF,DEA),1));
底背离:=REF(CLOSE,A1+1)>CLOSE AND DIFF>REF(DIFF,A1+1) AND CROSS(DIFF,DEA);
底背:DRAWLINE(A1=0