# File mrplot/helpers.rb, line 50
    def initialize
      @styles                 = Hash.new

      # Possible entries:
      # color (Color)
      # font
      # font_size
      # font_style (:plain, :bold, :italic)
      # marker (:dot, :cross, :small_cross, :square, :image :circle)
      # arrow_head (:triangle, :sharp, :simple)
      # marker_image
      # fill_color (Color)
      # line_width      
    end