[racket] Destroy object ?

I don't immediately find an *introduction* to Racket's automatic memory 
management, in the Guide, Reference, or Quick manual.

Perhaps the Guide could say something briefly about this early on, for 
the benefit of people coming directly from C or C++?  As soon as they 
start seeing values being allocated, they'll be waiting for the other 
shoe to drop.

-- 
http://www.neilvandyke.org/