Hi,

> * Writing Smalltalk code.
[...]
> I would really like to be
> able to navigate in packages, classes and methods within classes
> spatially, via a zoomable interface or such (3d?). Should I start to try
> to implement that, or is there already something similar?

Last year I started a project which main goal is to allow the user to work
graphically with code, as in UML and CASE tools, inside Squeak. The project
name is Jacaranda and you can find more info at it's swiki page at:
http://minnow.cc.gatech.edu/squeak/2958

Probably it's not what you are looking for but maybe it could help you find
a starting point.

Oh. And please while you are looking for this browser if you find some
interesting info please share it with me. I am very interested in this
topic. :)

> One other thing, it seems to me that I saw in a tutorial that there were
> an autocomplete feature in the browser, but I can not retrieve it. Is
> there such a thing? For instance, I start typing a class or message and
> press ctrl+space, and I can choose between the possible completions...

Try <alt>+<q> to autocomplete the message name

Regards,
Hernan