Not directly related to the EAD, but perhaps still useful to EAD
implementors looking at delivery systems..
Another alternative system for indexing and retrieval is the
Structured Information Manager
(SIM). Info at: http://www.kti.com/docs/sim.html
Some potential advantages there perhaps worth investigating in terms
of high performance full text indexing and retrieval, Z39.50 and web server
integration, plus native support for SGML/XML (and Marc).