$output=t('You can use !BBCode tags in the text.',array('!BBCode'=>l(t('BBCode'),"filter/tips/$format",array('fragment'=>'filter-bbcode-'.$delta))));
$output=t('You can use !BBCode tags in the text.',array('!BBCode'=>l(t('BBCode'),"filter/tips/$format",NULL,NULL,'filter-bbcode-'.$delta)));
#D6: $output = t('You can use !BBCode tags in the text.', array('!BBCode' => l(t('BBCode'), "filter/tips/$format", array('fragment' => 'filter-bbcode-' . $delta))));