Write @code{spam-blackbox-register-routine} and
@code{spam-blackbox-unregister-routine} using the bogofilter
-register/unregister routines as a start, or other restister/unregister
+register/unregister routines as a start, or other register/unregister
routines more appropriate to Blackbox, if Blackbox can
register/unregister spam and ham.