* <li>SORT_ALIGNMENT (No sort|Id|Pairwise Identity)</li>
* <li>SEQUENCE_LINKS list of name|URL pairs for opening a url with
* $SEQUENCE_ID$</li>
+ * <li>GROUP_LINKS list of name|URL[|<separator>] tuples - see jalview.utils.GroupURLLink for more info
+ * </li>
* <li>DAS_REGISTRY_URL the registry to query</li>
* <li>DEFAULT_BROWSER for unix</li>
* <li>DAS_ACTIVE_SOURCE list of active sources</li>