def as_href(from_path)
      if @options.all_one_file
        "#" + path
      else
        RDoc::Markup::ToHtml.gen_relative_url from_path, path
      end
    end
def as_href(from_path)
      if @options.all_one_file
        "#" + path
      else
        RDoc::Markup::ToHtml.gen_relative_url from_path, path
      end
    end
Returns a reference to outselves to be used as an href= the form depends
 on whether we're all in one file or in multiple files