* displayed as '.'</li>
* <li>SORT_BY_TREE (false) sort the current alignment view according to the
* order of a newly displayed tree</li>
+ * <li>DBFETCH_USEPICR (false) use PICR to recover valid DB references from sequence ID strings before attempting retrieval from any datasource
+ * </li>
*
* <li></li>
*