JADE has extended the number of user classes permitted to just under one million. The:
First user class number is 2,048.
Maximum user class number is 999,999. (System classes have class numbers starting at 1,000,000.)
Number of user classes is 997,952.
Maximum number of exclusive collections (subobjects), binary large objects (blobs), and string large objects (slobs) in a class is 65,535.