# File lib/sup/buffer.rb, line 70
  def initialize window, mode, width, height, opts={}
    @w = window
    @mode = mode
    @dirty = true
    @focus = false
    @title = opts[:title] || ""
    @force_to_top = opts[:force_to_top] || false
    @x, @y, @width, @height = 0, 0, width, height
    @atime = Time.at 0
    @system = opts[:system] || false
  end