                <div class="block">

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            <p><span class="changed_modified_2_0_rev_a">This</span>
            element declares the usage contract for a composite
            component.  Optionally, and at the component author's
            discretion, this contract exposes the features of one or
            more inner components to the page author.  The page author
            can work with the composite component as a single component
            whose feature set is