Hi,

I agree wholeheartedly with Adreas's sentiments - The Right Thing is to 
have nice OO methods on Class/Behavior which delegate to SystemNavigation.

Having submitted the Deprecatiob changeset, I still think the two 
Object>>#deprecatedExplanation: methods are awkward.

We should only use something terse like Object>>#deprecated: anExplanation, 
ala Object>>#error:

-Brent