I somehow just hope the emergence of yet-another conceptual models would slow down and eventually vanish. No kidding, this whole variety of diagramming techniques (or grammars, languages, scripts) sometime gets me into my nerves. Just stick with standardized model and dig knowledge would have been better I suppose.
Anyway, quoting from the resource directly, please read this fine reference (at least for me as newbie). There will be more to feed.
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