# File lib/rd/rd2html-lib.rb, line 342
    def apply_to_RefToOtherFile(element, content)
      content = content.join("")
      filename = element.label.filename.sub(/\.(rd|rb)(\.\w+)?$/, "." +
                                            OUTPUT_SUFFIX)
      anchor = refer_external(element)
      if anchor
        %Q[<a href="#{filename}\##{anchor}">#{content}</a>]
      else
        %Q[<a href="#{filename}">#{content}</a>]
      end
    end