function doSection ($attrstr) {
$attrstr = html_entity_decode($attrstr);
$attr = new Attributes($attrstr);
$preface = $attr->getAttrib('preface');
if ($preface !== false) {
/* flush_section(0);
if ($preface == 'start')
$ret = "<abstract>";
elseif ($preface == 'end')
$ret = "</abstract>"; */
}
else {
global $current_section;
$level = $attr->getAttrib('level');
$ret = flush_section($level) . "<section";
$current_section = $level;
$label = trim($attr->getAttrib('label'));
if ($label != '') {
$ret .= ' id="'.substitute_umlauts($label).'"';
$ret .= ' wikipage="'.substitute_umlauts($label).'"';
}
$title = $attr->getAttrib('title');
$ret.= "><title>".xmlencode($attr->getAttrib('title'))."</title>";
}
return $ret;
}