# File lib/gruff/base.rb, line 402
    def draw
      make_stacked if @stacked
      setup_drawing
      
      debug {
        # Outer margin
        @d.rectangle( LEFT_MARGIN, TOP_MARGIN, 
                            @raw_columns - RIGHT_MARGIN, @raw_rows - BOTTOM_MARGIN)
        # Graph area box
        @d.rectangle( @graph_left, @graph_top, @graph_right, @graph_bottom)
      }
    end