[Cuis-dev] The Preference model

[ken.dickey at whidbey.com]

I was thinking of something very simple.
   A setter which takes a prop and a new value
   An informer, which notifies on value change

Attached is a design sketch (I sketch in code ;^).

Where does this come up short?

What refinements might be required?

Is there a simpler way?

Good on ya,
-KenD

PS: Again, my eyes are a bit wacky.  Please do the real work of making 
this useful. Thkx!
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