[plt-scheme] using mzscheme from command line

Mac os x, and plt 2.4

bash-2.05a$ echo $PLTHOME
/Applications/PLT_v204/
bash-2.05a$ mzscheme
Welcome to MzScheme version 204, Copyright (c) 1995-2003 PLT
 > (require (lib "compat.ss"))
 > (rest '(a b c))
reference to undefined identifier: rest
 >

but it works fine from drscheme:

Welcome to DrScheme, version 204.
Language: Pretty Big (includes MrEd and Advanced).
 > (require (lib "compat.ss"))
 > (rest '(a b c))
(b c)
 >

I don't understand this...and await the brick-to-the-head which will 
lead to enlightenment!

cheers and thanks

Chris




Dr. Chris Wright
Medical Director
Intensive Care Unit
Monash Medical Centre, Clayton VIC