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The client tier consists of a client program that makes requests to the middle tier (composite version)

The composite structure of a source text «wrapper» Component can be used directly to illustrate a scenario using "instance-like" Properties typed by analysis elements. While this approach can lead to compact commentaries, it has however one huge drawback for UML™ Parsing Analysis:

This approach does not easily admit the creation of models as the union of bindings from many source text wrappers to analysis elements,
because the wrapper's Properties are unique to the context provided by the «wrapper» Component.

Nevertheless, such diagrams can make a useful contributions to interpreting a technical text as UML.

In many cases it will be found that a domain analysis element that can provide a context for reusable Properties is indicated elsewhere, which can then likewise be used to illustrate such composite structures with flows.