// set the relatedtags field of the $tag object that will be passed to the form
// need to use html_entity_decode because formslib does it for us later on.
-$tag->relatedtags = html_entity_decode(tag_get_related_tags_csv(tag_get_related_tags($tag->id), TAG_RETURN_TEXT));
+$tag->relatedtags = html_entity_decode(tag_get_related_tags_csv(tag_get_related_tags($tag->id, TAG_RELATED_MANUAL), TAG_RETURN_TEXT));
if (can_use_html_editor()) {
$options = new object();