There isn't any yet, but it's a great idea. I'll see if I can pull together a list with and post it as a document in the Contributed Documentation community. That way, anyone can add descriptions for those they've come into contact with.
How's the list coming?
If anyone is aware of a document that lists out all the possible system properties, I'd appreciate a pointer.
In the meantime, I'll continue to google / search for it ... hoping for better results.
Thanks a bunch in advance.