Please Explain the code below

Halo EXPERTS , I am new to amibroker code , please explain the below code ,It is working very well with RIL 10min frame .I want know the code details completely. It is from kpl swing system with ishimaku clouds . Thanks in advace

messageboard = ParamToggle("Message Board","Show|Hide",0);
showsl = ParamToggle("Stop Loss Line", "Show|Hide", 0);
no=10;
res=HHV(H,no);
sup=LLV(L,no);
avd=IIf(C>Ref(res,-1),1,IIf(C<Ref(sup,-1),-1,0));
avn=ValueWhen(avd!=0,avd,1);
s5d=IIf(avn==1,sup,res);

if (showsl == 0)
//{Plot(s5d,"Stop Loss",colorCustom14,styleDots);}
exitlong = Cross(s5d, H);
PlotShapes(exitlong * shapeNone, colorBlack,0,H,-10);
exitshort = Cross(L, s5d);
PlotShapes(exitshort * shapeNone, colorBlack,0,L,-15);

Buy = exitshort;
Sell = exitlong;
//Short = Sell;
//Cover = Buy;
Buy = ExRem(Buy,Sell);
Sell = ExRem(Sell,Buy);
//Short = ExRem(Short, Cover);
//Cover = ExRem(Cover, Short);
AlertIf( Buy, "", "BUY @ " + C, 1 );
AlertIf( Sell, "", "SELL @ " + C, 2 );

for(i=BarCount-1;i>1;i--)
{
if(Buy == 1)
{
entry = C;
sig = "BUY";
sl = s5d;
tar1 = entry + (entry * .0050);
tar2 = entry + (entry * .0092);
tar3 = entry + (entry * .0179);

bars = i;
i = 0;
}
if(Sell == 1)
{
sig = "SELL";
entry = C;
sl = s5d;
tar1 = entry - (entry * .0050);
tar2 = entry - (entry * .0112);
tar3 = entry - (entry * .0212);


bars = i;
i = 0;
}
}
Offset = 20;
Clr = IIf(sig == "BUY", colorLime, colorRed);
ssl = IIf(bars == BarCount-1, s5d[BarCount-1], Ref(s5d, -1));
sl = ssl[BarCount-1];

Plot(LineArray(bars-Offset, tar1, BarCount, tar1,1), "", Clr, styleLine|styleDots, Null, Null, Offset);
Plot(LineArray(bars-Offset, tar2, BarCount, tar2,1), "", Clr, styleLine|styleDots, Null, Null, Offset);
Plot(LineArray(bars-Offset, tar3, BarCount, tar3,1), "", Clr, styleLine|styleDots, Null, Null, Offset);

Plot(LineArray(bars-Offset, sl, BarCount, sl,1), "", colorDarkRed, styleLine|styleLine, Null, Null, Offset);
Plot(LineArray(bars-Offset, entry, BarCount, entry,1), "", colorGreen, styleLine|styleLine, Null, Null, Offset);

for (i=bars; i <BarCount;i++)
{
PlotText(""+sig+"@"+entry, BarCount+1,entry,Null,colorBlue);
PlotText("T1@"+tar1,BarCount+3,tar1,Null,Clr);PlotText("T2@"+tar2,BarCount+3,tar2,Null,Clr);PlotText ("T3@"+tar3,BarCount+3,tar3,Null,Clr);

}


printf("Last " + sig + " Signal came " + (BarCount-bars) + " bars ago");
printf("\n" + sig + " @ : " + entry + "\nStop Loss : " + sl + " (" + WriteVal(IIf(sig == "SELL",entry-sl,sl-entry), 2.2) + ")"+ "\nTarget_1 : " + tar1 + "\nTarget_2 : " + tar2 + "\nTarget_3 : " + tar3);
printf("\nCurrent P/L : " + WriteVal(IIf(sig == "BUY",(C-entry),(entry-C)),2.2));

if (messageboard == 0 )
{
GfxSelectFont( "Tahoma", 13, 100 );
GfxSetBkMode( 1 );
GfxSetTextColor( colorWhite );

if ( sig =="BUY")
{
GfxSelectSolidBrush( colorBlue ); // this is the box background color
}
else
{
GfxSelectSolidBrush( colorRed ); // this is the box background color
}
pxHeight = Status( "pxchartheight" ) ;
xx = Status( "pxchartwidth");
Left = 1100;
width = 310;
x = 5;
x2 = 290;

y = pxHeight;

GfxSelectPen( colorGreen, 1); // broader color
GfxRoundRect( x, y - 163, x2, y , 7, 7 ) ;
GfxTextOut( ( " GSVTRADES "),25,y-165);
GfxTextOut( (" "),27,y-160);
GfxTextOut( ("Last " + sig + " Signal came " + (BarCount-bars-1) * Interval()/60 + " mins ago"), 13, y-140) ; // The text format location
GfxTextOut( ("" + WriteIf(sig =="BUY",sig + " @ ",sig + " @") + " : " + entry), 13, y-120);
GfxTextOut( ("Trailing SL : " + sl + " (" + WriteVal(IIf(sig == "SELL",entry-sl,sl-entry), 2.2) + ")"), 13, y-100);
GfxTextOut( ("TGT:1 : " + tar1), 13, y -80);
GfxTextOut( ("TGT:2 : " + tar2), 13,y-60);
GfxTextOut( ("TGT:3 : " + tar3), 13,y-40);
GfxTextOut( ("Current P/L : " + WriteVal(IIf(sig == "BUY",(C-entry),(entry-C)),2.2)), 88, y-22);;

}

Halo is there any one help me for above code detailing ,because I want to try it in FALCON
which I am using get scan and alerts . One more thing How can I scan scrips " First bar of the day or 9.15 to 9.25 am bar cross high above or low below " for every 15 sec with a afl code .Advance Thanks for help