Lcd

[savnik]

I have found this code , but i don't understand that.
If some know how to work , please to explain;

   value       var Word
    fullbars	VAR	BYTE			' Number of full bars at left of graph
    barval		VAR	BYTE			' Value passed to bargraph routine
    partbar		VAR	BYTE			' ASCII code for partial bar character
    pad			VAR	BYTE			' Number of spaces to pad to the right of graph

    LCDOut $FE,64,REP $0\8			' Load blank character (ascii $0)

    
    LCDOut $FE, 1					' Clear the display	
    

    barval = (value/9)+1	            ' Scale 0-500 to 60 segment bargraph (1-56)
    
  	fullbars = (barval MIN 60)/3		' Calculate number of full bars (|||). 
  	
	' partbar holds the ascii code for the partial bar character: $0=" ", $1="|", or $2="||"

  	partbar = (barval MIN 60)//3		' Calculate ascii code for partial bar character		 
  	
  	pad = 19 - fullbars					' Number of spaces to fill display width.
  	  	
	LCDOut $FE,$D0,"VU: ", REP $3\fullbars, partbar, REP " "\pad