What do data flow diagrams specify about control flow?

What information contains in data flow diagrams about control flow?
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"Data flow diagrams do not specify control flow. Some sequence information may be inferred but nothing else."
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Any information flowchart (DFD) is really a in writing(p) portrayal on the "circulation" of web data by using an data system, custom modeling rendering the course of action facets. Often they are a preliminary phase employed to generate an overview of the device which can in the future be elaborated.
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