507         $this->_open('textbf');
522         $this->_open('emph');
537         $this->_open('underline');
553         $this->_open('texttt');
571         $this->_open('textsubscript');
588         $this->_open('textsuperscript');
606         $this->_open('sout');
621         $this->_open('footnote');
776         $this->_open('lstset');
1273         $this->_open('textbf');
1348     protected function _open($command, $params = NULL, $brackets = true) {  function in renderer_plugin_latexit
1390         $this->_open($command, $params, $brackets);
1508         $this->_open($level);
1511         $this->_open('texorpdfstring');