code: protected void writeLink(Header header) throws IOException {
          addTabs(2);
          writeStart(HtmlTags.LINK);
          write(HtmlTags.REL, header.getName());
          write(HtmlTags.TYPE, HtmlTags.TEXT_CSS);
          write(HtmlTags.REFERENCE, header.getContent());
          writeEnd();
      }
docs: Writes a link in the header.
  
  @param   header   the element that has to be written
  @throws  IOException