[plt-scheme] scheme/mlist missing?

The Reference discusses mutable pairs and mutable lists. I came  
across this looking for set-car! and set-cdr! Apparently, they are  
not there, but there is a set-mcar! and set-mcdr! for mutable lists -  
or so I thought

 > (require scheme/mlist)
open-input-file: cannot open input file: "/Applications/PLT Scheme  
v4.0.2/collects/scheme/mlist.ss" (No such file or directory; errno=2)


Is this module obsolete, or am I missing a file?

At any rate, shared bindings do seem to offer the same kind of  
capabilities, so I'm not worried about this. I just wonder if the  
documentation is out of date or if I'm missing a file.


"You can't win if you don't finish the race."
--Richard Petty

http://www.gwoodhouse.com
http://GregWoodhouse.ImageKind.com




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