# File vocdoc.rb, line 953
  def parse_prefixes
    puts "Parsing prefixes..." if @options.verbose
    # @prefix fast: <http://purl.oclc.org/fast/ontology/gadget#> .
    prefix_array = File.open(@owl_file_name).read.scan(/@prefix (.*?): <(.*?)> ./)
    $prefix_mapping = Hash.new
    prefix_array.each do |pair|
      $prefix_mapping[pair[1]] = pair[0]
    end
    pp $prefix_mapping if @options.verbose
    puts "done!\n\n" if @options.verbose
  end