The main interface to MMBase, also known as `MMCI' (MMBase Cloud Interface). One of the core
interfaces of this package is indeed `Cloud', which gives direct access to MMBase data.
Script languages can access MMBase in this way. JSP can e.g. do this rather directly, or a
little less directly by use of the MMBase Taglib.
This interface represents a node's type information object - what used to be the 'builder'.
It contains all the field and attribuut information, as well as GUI data for editors and
some information on deribed and deriving types.
A Node-Query is a query that queries node-lists, in contradiction to a normal Query which can
query 'cluster nodes' and even more generally 'result nodes' too.
This interface represents a relation constraint (or contex, if you like).
More specifically, it represents a relation manager (itself a node manager) as it applies between bnode belonging to
two other node managers.
Some of the information here is retrieved from the NodeManager used to build the catual relation node
(the data as described in the xml builder config file).