Buy/Sell for Amibroker (AFL)

_SECTION_BEGIN("Buy/Sell");
M1=EMA(((2*EMA(C,29/2))-EMA(C,29)),2);
M2=EMA(((2*EMA(C,29/2))-EMA(C,29)),5);
Buy     = Cross(M1, M2) ;
Sell    = Cross(M2, M1) ;
 
Buy     = ExRem(Buy, Sell);
Sell    = ExRem(Sell, Buy);
mycolor = IIf(M1 > M2, colorLime, colorRed);
shape   = Buy * shapeUpArrow + Sell * shapeDownArrow ;
 
 
PlotShapes( shape, IIf( Buy, colorGreen, colorRed ),0, IIf( Buy, Low, High ) );
dist = 1.5*ATR(20);
for( i = 0; i < BarCount; i++ ) {
       if( Buy[i] ) PlotText( "Buy\n@" + Close[i], i, Low[i] - dist[i], colorGreen );
       if( Sell[i] ) PlotText( "sell\n@" + Close[i], i, Low[i] + dist[i], colorRed );
    }
 
Plot( Close, "Close", mycolor, styleNoTitle | styleBar | styleThick   );
_SECTION_END();