Help with explaining code

Hello
Can somebody give me an explanation of this code, I attempt to re-code it for another scripting language. the part I don¿t get at all is in red

#property indicator_separate_window
#property indicator_buffers 7
#property indicator_color1 Red
#property indicator_color2 DeepSkyBlue
#property indicator_color3 Yellow
#property indicator_color4 Lime
#property indicator_color5 White
#property indicator_color6 Magenta
#property indicator_color7 Maroon

#property indicator_width1 2
#property indicator_width2 2
#property indicator_width3 2
#property indicator_width4 2
#property indicator_width5 2
#property indicator_width6 2


extern int NumberOfBars = 500;
extern string Note = "0 means Display all bars";
extern int MAPeriod = 100;
extern int LookBack = 20;


double red[],blue[],yellow[],green[],white[],magenta[],v4[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- indicators
SetIndexBuffer(0,red);
SetIndexStyle(0,DRAW_HISTOGRAM);
SetIndexLabel(0,"Climax High ");

SetIndexBuffer(1,blue);
SetIndexStyle(1,DRAW_HISTOGRAM);
SetIndexLabel(1,"Neutral");

SetIndexBuffer(2,yellow);
SetIndexStyle(2,DRAW_HISTOGRAM);
SetIndexLabel(2,"Low ");

SetIndexBuffer(3,green);
SetIndexStyle(3,DRAW_HISTOGRAM);
SetIndexLabel(3,"HighChurn ");

SetIndexBuffer(4,white);
SetIndexStyle(4,DRAW_HISTOGRAM);
SetIndexLabel(4,"Climax Low ");

SetIndexBuffer(5,magenta);
SetIndexStyle(5,DRAW_HISTOGRAM);
SetIndexLabel(5,"ClimaxChurn ");

SetIndexBuffer(6,v4);
SetIndexStyle(6,DRAW_LINE,0,2);
SetIndexLabel(6,"Average("+MAPeriod+")");

IndicatorShortName("Better Volume 1.4" );


//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----

//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{

double VolLowest,Range,Value2,Value3,HiValue2,HiValue3,LoValue3,tempv2,tempv3,tempv;
int limit;
int counted_bars=IndicatorCounted();
//---- last counted bar will be recounted
if(counted_bars>0) counted_bars--;
if ( NumberOfBars == 0 )
NumberOfBars = Bars-counted_bars;
limit=NumberOfBars; //Bars-counted_bars;


for(int i=0; i<limit; i++)
{
red[i] = 0; blue[i] = Volume[i]; yellow[i] = 0; green[i] = 0; white[i] = 0; magenta[i] = 0;
Value2=0;Value3=0;HiValue2=0;HiValue3=0;LoValue3=99999999;tempv2=0;tempv3=0;temp
v=0;


VolLowest = Volume[iLowest(NULL,0,MODE_VOLUME,20,i)];
if (Volume[i] == VolLowest)
{
yellow[i] = NormalizeDouble(Volume[i],0);
blue[i]=0;
}

Range = (High[i]-Low[i]);
Value2 = Volume[i]*Range;

if ( Range != 0 )
Value3 = Volume[i]/Range;


for ( int n=i;n<i+MAPeriod;n++ )
{
tempv= Volume[n] + tempv;
}
v4[i] = NormalizeDouble(tempv/MAPeriod,0);


for ( n=i;n<i+LookBack;n++)
{
tempv2 = Volume[n]*((High[n]-Low[n]));
if ( tempv2 >= HiValue2 )
HiValue2 = tempv2;

if ( Volume[n]*((High[n]-Low[n])) != 0 )
{
tempv3 = Volume[n] / ((High[n]-Low[n]));
if ( tempv3 > HiValue3 )
HiValue3 = tempv3;
if ( tempv3 < LoValue3 )
LoValue3 = tempv3;
}
}

if ( Value2 == HiValue2 && Close[i] > (High[i] + Low[i]) / 2 )
{
red[i] = NormalizeDouble(Volume[i],0);
blue[i]=0;
yellow[i]=0;
}

if ( Value3 == HiValue3 )
{
green[i] = NormalizeDouble(Volume[i],0);
blue[i] =0;
yellow[i]=0;
red[i]=0;
}
if ( Value2 == HiValue2 && Value3 == HiValue3 )
{
magenta[i] = NormalizeDouble(Volume[i],0);
blue[i]=0;
red[i]=0;
green[i]=0;
yellow[i]=0;
}
if ( Value2 == HiValue2 && Close[i] <= (High[i] + Low[i]) / 2 )
{
white[i] = NormalizeDouble(Volume[i],0);
magenta[i]=0;
blue[i]=0;
red[i]=0;
green[i]=0;
yellow[i]=0;
}


}
//----

//----
return(0);
}
//+------------------------------------------------------------------+

Thanks in advance

OK, I'm progressing and almost done, but please someone can explain what is the meaning of "!=0"
Thank you

Not equal to zero.

Thank you very much Codemeister, I supossed that but wasn't sure, because doesn't make sense in the code (for me)
Best regards

Can I ask a second one?

tempv3 = Volume[n] / ((High[n]-Low[n]));
if ( tempv3 > HiValue3 )
HiValue3 = tempv3;
if ( tempv3 < LoValue3 )
LoValue3 = tempv3;

The above script means if tempv3 is greater than HiValue3, Imust use the Hig value and if it's lower than LoValue3, the Low value is used?

It is keeping track of the lowest and highest values from the calculation Volume[n] / ((High[n]-Low[n])).

if ( Volume[n]*((High[n]-Low[n])) != 0 )

is just a fancy way of saying:

if (Volume[n] != 0 && High[n] != Low[n])

it means if volume is non-zero AND high - low is non-zero.



&& is logical AND,
|| is logical OR
see also the section about operators in the manual.

Also click through the complete reference manual (don't read it entirely, just click through it) so you will at least have seen anything at least once and can remember that it is there and where to find it.