# get parameters
  if ($line) {
    $line=substr($line,2);
    $tag = strtok($line,' ');
    $type = strtok(' ');
    $extra = strtok('');
    /*
    if ($tag != 'vim') {
      $extra = $type;
      $type = $tag;
    }
    */
  }

  # comment out the following two lines to freely use any syntaxes.
  #if (!in_array($type,$syntax))
  #  return "<pre class='code'>\n$line\n".htmlspecialchars($src)."\n</pre>\n";