Copies one or more existing classes to form one or more new
    classes. If you copy a class to the same library, the new
    class must have a different name. The COPY CLASS transaction
    preserves all class attributes and inserts element generations
    that belong to each input class. The elements to be inserted
    into the new class must already exist in the target library.

       Format:

          COPY CLASS  old-class-expression new-class-name "remark"