# File lib/thor/actions.rb, line 50
      def add_runtime_options!
        class_option :force, :type => :boolean, :aliases => "-f", :group => :runtime,
                             :desc => "Overwrite files that already exist"

        class_option :pretend, :type => :boolean, :aliases => "-p", :group => :runtime,
                               :desc => "Run but do not make any changes"

        class_option :quiet, :type => :boolean, :aliases => "-q", :group => :runtime,
                             :desc => "Supress status output"

        class_option :skip, :type => :boolean, :aliases => "-s", :group => :runtime,
                            :desc => "Skip files that already exist"
      end