{HEAD ~ A need} exists for {TAIL ~ these principles} of OOP to be applied to a messaging interface of an electronic messaging system such that a set of OOP classes and objects for the messaging interface can be provided 
exists for
{ HEAD ~ A need } exists for { TAIL ~ these principles } of OOP to be applied to a messaging interface of an electronic messaging system such that a set of OOP classes and objects for the messaging interface can be provided
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