def paragraph(text)
        if text =~ %r{^NOTE:\s+Defined\s+in\s+<code>(.*?)</code>\.?$}
          %(<div class="note"><p>Defined in <code><a href="#{github_file_url($1)}">#{$1}</a></code>.</p></div>)
        elsif /^(TIP|IMPORTANT|CAUTION|WARNING|NOTE|INFO|TODO)[.:]/.match?(text)
          convert_notes(text)