The long-term community goal is to implement all existing OPAC features in TPac. Not all features have yet been added. Some new features have been implemented along the way.
<link type='application/opensearchdescription+xml' rel='search' title='Evergreen' href='http://hostname/opac/extras/opensearch/1.1/-/osd.xml' />
so that users can automatically add a search widget for the catalog to their browser.