# File lib/sup/label.rb, line 13
  def initialize fn
    @fn = fn
    labels = 
      if File.exists? fn
        IO.readlines(fn).map { |x| x.chomp.intern }
      else
        []
      end
    @labels = {}
    @new_labels = {}
    @modified = false
    labels.each { |t| @labels[t] = true }
  end