** Method-related Hooks

    * method_missing
    * method_added
    * singleton_method_added
    * method_removed
    * singleton_method_removed
    * method_undefined
    * singleton_method_undefined

** Class & Module Hooks

    * inherited
    * append_features
    * included
    * extend_object
    * extended
    * initialize_copy
    * const_missing

** Marshalling Hooks

    * marshal_dump
    * marshal_load

** Coercion Hooks

    * coerce
    * induced_from
    * to_xxx