{HEAD ~ The alternate object} toward which the message is dispatched may contain {TAIL ~ a method} required for execution by a message sent to a first object, but which is unfulfilled by absence of the desired method in the first object 
{ HEAD ~ The alternate object } toward which the message is dispatched may contain { TAIL ~ a method } required for execution by a message sent to a first object , but which is unfulfilled by absence of the desired method in the first object
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH