_SECTION_BEGIN("SDA2 Channel Trading System");
Derived=WMA(((H+L)/2)+(O-C),3);  i=WMA(Derived,3);  
Upper=(Derived+StDev(Derived,7))+ATR(2)/1.5;  
Lower=(Derived-StDev(Derived,7))-ATR(2)/1;  
color=IIf(BarsSince(Cross(Lower,C))>  BarsSince(Cross(C,Upper)), colorBrightGreen,colorRed); 
 Plot(C,"",Color,64);  Plot(Upper,"upper band",colorGreen);  Plot(Lower,"lower band",colorDarkRed);  
Title=Name()+" "+Date()+" "+EncodeColor(colorBlack)+" SDA2 Channel System "+EncodeColor(colorRed)+" 
Vol="+NumToStr(Volume,1.0)+" "+" O="+Open+" H="+HHV(H,1)+" L="+LLV(L,1)+ "Close="+ Close+""+"("+NumToStr((Close-Ref(C,-1))/Ref(C,-1)*100,1.2)+" %)";   


/* Buy or Sell Condition */
Buy = Cross(Close,Upper); 
Sell = Cross(Lower,Close); 
Buy = ExRem(Buy,Sell); 
Sell = ExRem(Sell,Buy);   
Filter = Buy OR Sell; 
/* Exploration Parameters */
AddTextColumn( FullName(), "Company Name" );
 AddColumn( Buy, "Buy", 1 ); 
AddColumn( Sell, "Sell", 1 ); 
AddColumn( C, "Close", 1.3 );
AddColumn( H, "High", 1.3 ); 
AddColumn( Lower, "Lower Band", 1.3 ); 
AddColumn( Upper, "Upper Band", 1.3 );   
PlotShapes(IIf(Buy, shapeSquare, shapeNone),colorGreen, 0, L, Offset=-40); 
PlotShapes(IIf(Buy, shapeSquare, shapeNone),colorLime, 0,L, Offset=-50);                       
PlotShapes(IIf(Buy, shapeUpArrow, shapeNone),colorWhite, 0,L, Offset=-45);  
PlotShapes(IIf(Sell, shapeSquare, shapeNone),colorRed, 0, H, Offset=40); 
PlotShapes(IIf(Sell, shapeSquare, shapeNone),colorOrange, 0,H, Offset=50);                       
PlotShapes(IIf(Sell, shapeDownArrow, shapeNone),colorWhite, 0,H, Offset=-45);     
_SECTION_END();