# File karel/karel_window.rb, line 418
        def place()
            sizeFactor = 0.5 #Change this to change beeper size. The others scale from it. 
            placeFactor = 0.5 * sizeFactor
            val = @number.to_s
            # if @number < 0
              # val = 'N'
            # end
            val = 'N' if @number < 0
            x,y = scaler(@street+placeFactor, @avenue-placeFactor)
??
            oval = TkcOval.new(@canvas, x, y, x + scale_factor*sizeFactor, y + scale_factor*sizeFactor, :fill=> 'black', :tags => @tag)
            TkcText.new(oval, x + scale_factor*placeFactor,  y + scale_factor*placeFactor,
                   :tags => @tag, :width => 1, :text =>val, :fill => 'white')
        end