What skills do strong academic writers possess?

What skills do strong academic writers possess?
The academic writer is someone who has a good command of the language generally and of the jargon of the particular profession they are writing for. They know how to organize a research paper, article or book in a way that makes sense and they are family with the various writing manuals that show them how to document, make references, etc. as part of their paper. They have something to say and they can say it and while some academics may like to show off their intelligence with the uses of long words, complex concepts, etc. I think the skilled writer is someone who can write in a way that satisfied the fellow academic but also is understandable to much of the general public.