Re: evaluating buffer w/o re-initializing environment?

FWIW, I suspect that DrScheme would find more converts from Emacs if 
there were power-user features like send-last-sexp-to-repl and 
send-selection-to-repl.  Even if they don't work very well.

These rapid/exploratory features could be disabled for the student 
languages.  Otherwise you'll have hotshot students showing other 
students the features and subverting the pedagogic intent.

I'm not arguing too strongly for making DrScheme more friendly to power 
users.  If the Scheme consulting revenue permits, I have a plan to 
rewrite all the Emacs Scheme support from scratch, to make it much 
closer to DrScheme, while supporting more rapid/exploratory 
development.  I'm willing to add some kind of automatic HTDP student 
detection and lockout behavior. :)

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