Tim-
It was good seeing you at HASUG.
With regard to reusable prompts, what we mean is that you can define a prompt and, well, reuse it in any of your stored process definitions. For example, suppose you always want to restrict users to a few ODS styles. You can define an "ODS Style" prompt, enter the few valid styles and save it. Whenever you make a stored process, you can simply include, or "reuse" this prompt, instead of having to define it from scratch in each stored process.
Your question regarding Enterprise Guide seems to be a question of maintaining "state". I don't know whether or not that is possible with EG, but in streaming stored processes, you can do it via SAS sessions. In EG you can try to maintain state by writing the information to permanent SAS table or flat file, but there might be better ways. I suggest you pose the question in the Enterprise Guide forum, if you have not already done so:
http://support.sas.com/forums/forum.jspa?forumID=10&start=0
Vince
SAS R&D
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