Here's a list of the variables it fetches initially:
PHP Code:
$vbulletin->input->clean_array_gpc('r', array(
'forumid' => TYPE_UINT,
'forumids' => TYPE_STR,
'type' => TYPE_STR,
'lastpost' => TYPE_BOOL,
'nohtml' => TYPE_BOOL,
'fulldesc' => TYPE_BOOL,
'do' => TYPE_STR,
'count' => TYPE_UINT,
'id' => TYPE_UINT,
'grouped' => TYPE_UINT,
'days' => TYPE_UINT,
'detail' => TYPE_STR,
'name' => TYPE_STR,
));