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Object mathod inheritance
In old versions of T is was possible to specify in an object's method list
another object (or rather, a handler) to default to for calls to methods not
defined for the object. For example,
((print self port) (format port "zowie"))
would use DEFAULT-HANDLER's method clauses for all methods other than PRINT.
Does this functionality still exist?? JOIN will accomplish a similar thing,
but (1) I would prefer to do it at object definition time, and (2) I want to
do this will structures, which are not (yet) supported by JOIN.