The class of the first object establishes {HEAD ~ alternate dispatch variables} which can be set at {TAIL ~ run time} by a user making entries in a graphical user interface effective to cause redispatch of the message to the alternate object 
The class of the first object establishes { HEAD ~ alternate dispatch variables } which can be set at { TAIL ~ run time } by a user making entries in a graphical user interface effective to cause redispatch of the message to the alternate object
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL 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