Def                 Undef                 Display
        deffunction           undeffunction            ppdeffunction
                                                       list-deffunctions

        defglobal                                      ppdefglobal

        defmodule                                      ppdefmodule

        defclass              undefclass               ppdefclass
                                                       list-defclasses
                                                       browse-classes
                                                       describe-class

        make-instance         unmake-instance          instances
                                                       modify-instance
                                                       duplicate-instance
                                                       save-instances
                                                       load-instances

        definstances          undefinstances           ppdefinstances
                                                       list-definstances

        defmessage-handler    undefmessage-handler     ppdefmessage-handler

        defmethod             undefmethod              ppdefmethod