+ <LI> To avoid memory leaks and seg faults the user intended classes
+ use now a Reference Counter.<br>
+ <UL>
+ <LI> <TT>new()</TT> and <TT>delete()</TT> are replaced by
+ <TT>New()</TT> and <TT>Delete()</TT>
+ <LI> <TT>Register()</TT> and <TT>Unregister()</TT> methods are
+ available.
+ </UL>