Ozone Widget Framework (OWF) is an event-based web platform for lightweight integration of widget applications. This technical report presents a formal model of OWF's widget composition mechanism. First, we present a detailed description of Ozone's end user composition Then, we describe our architectural modeling approach and its value for analysis of OWF widget compositions. We go through the process of creating an architectural style to represent assemblies of Ozone widgets, reviewing modeling decision points and style alternatives.

39 pages

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