super
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    The super message is a special type of message, which allows messages
    to be sent to an object's superclass.  This is a very important
    capability, since in a subclass method, it is often necessary to invoke
    a method of the same name in a superclass.  The way to do this is by
    using the super message, as follows:

        obj:super:message

    Many examples of this can be found in the sample code on the Class(y)
    distribution disk.

    Sending the super message to an object returns a reference object
    which is in fact the same object flagged as though it belonged to its
    superclass.