Pointless code in rom

So I was reading some lines in the current paint program in computercraft and noticed something really weird on lines 179 - 198

-- Left and Right Selected Colours
for i=18,18 do
   term.setCursorPos(w-1, i)
   if leftColour ~= nil then
	  term.setBackgroundColour( leftColour )
	  term.write(" ")
   else
	  term.setBackgroundColour( canvasColour )
	  term.setTextColour( colours.grey )
	  term.write("X")
   end
   if rightColour ~= nil then
	  term.setBackgroundColour( rightColour )
	  term.write(" ")
   else
	  term.setBackgroundColour( canvasColour )
	  term.setTextColour( colours.grey )
	  term.write("X")
   end
end

the for loop in that seems rather pointless honestly….I just figured people would get a kick out of it as well :P/>

anyone else know any funny lines within the rom files?