"procedure" vs. "function"

[Urs Liska]

Hi all,

I just stumbled over a terminology issue: are "procedure" and "function" 
synonyms in Scheme or do they refer to different things?

From my earliest experiences with programming I'd recall the difference 
to be that functions return a value and procedures don't. But that's 
clearly not the case in Scheme.

Any enlightenment available?

--
Urs Liska
www.openlilylib.org