original_string: protected function start($tag, $attr = array())
      {
          return $this->generator->generateFromToken(
              new HTMLPurifier_Token_Start($tag, $attr ? $attr : array())
          );
      }
code: protected function start($tag, $attr = array())
      {
          return $this->generator->generateFromToken(
              new HTMLPurifier_Token_Start($tag, $attr ? $attr : array())
          );
      }
code_tokens: protected function start ( $ tag , $ attr = array ( ) ) { return $ this -> generator -> generateFromToken ( new HTMLPurifier_Token_Start ( $ tag , $ attr ? $ attr : array ( ) ) ) ; }
docstring: Returns a start tag
  @param string $tag Tag name
  @param array $attr Attribute array
  @return string
docstring_tokens: Returns a start tag