[plt-scheme] Typed Scheme and 3.99

Matthias Felleisen wrote:
> 
> Can you elaborate on this? It's for group members only.

The documentation doesn't say much.

     http://www.jazzscheme.org/manual.htm#types

But on the other hand it documtation has this disclaimer:

    Note that this manual is absolutely not complete and
    even contains obsolete or even wrong information. It
    is a work in progress. Consult at your own risk!!!


On the topic of JazzScheme, the screenshots:

     http://www.jazzscheme.org/screenshots.htm

/Jens Axel