Summary:
The IUE class scheme (2-digit, from 00 to 99) has been extended
to take account of additional objects. The class is determined
for FOS or GHRS datasets in different ways: free text terms in
the proposal title, proposal abstract, or proposal keywords; or
through matching coordinates with IUE coordinates, and picking
up the IUE class. A number of classes may be associated with a
dataset.