“By: Mikio Hirabayashi - 2009-08-31 13:22
BTW, the project site of Tokyo products have been moved onto my own server.
http://1978th.net/
Though it has not been completed yet, I’ll write more English information about Tokyo products.”
So, to get the latest, head there.

Scripting definition files (sdefs) are XML files that describe everything
about an application scripting interface: terminology, implementation
information, and complete documentation. Applications may incorporate
them to define their own scriptability, and scripting clients such as
AppleScript and Scripting Bridge read them to determine what operations
an application supports.
man sdef

“Neo4j is a graph database. It is an embedded, disk-based, fully transactional Java persistence engine that stores data structured in graphs rather than in tables. A graph (mathematical lingo for a network) is a flexible data structure that allows a more agile and rapid style of development.”
From the site:

graph-oriented model for flexible data representation;
graph network […]