code: function RenderMarkdown() {
    this.options = {}; // Default value only.
  
    this.routeMe = function(req, res) {
      var md = new Markdown();
      var debug = req.param('debug', false);
      md.debug = debug;
      md.bufmax = 2048;
      var fileName = path.join(viewsDir, req.params.filename);
      if (debug) console.error('>>>renderMarkdown: fileName="' + fileName + '"');
      res.write(jade.renderFile(
        path.join(viewsDir, 'mdheader.jade'),
        {title: this.options.title, subtitle: 'Markdown', pretty: true}));
      md.once('end', function() {
        res.write(jade.renderFile(path.join(viewsDir, 'mdtrailer.jade'), {pretty: true}));
        res.end();
      });
      md.render(fileName, mdOpts, function(err) {
        if (debug) console.error('>>>renderMarkdown: err=' + err);
        if (err) { res.write('>>>' + err); res.end(); return; }
        else md.pipe(res);
      });
    };
  }
docs: Class RenderMarkdown.