API Reference and Tutorials please check/update your libraries

I've been collecting pointers to (and generating) documentation for the 
various components in the system into what I'm intending to become 
central locations for developer documentation on the project.  If you 
see some resource that developers need or would find useful that I've 
missed, please add it.

There are two pages, the first is for tutorial-style documentation pointers:

    http://wiki.laptop.org/go/Tutorials

if you have or know about a developer's tutorial that isn't there, 
please add it. Eventually I'd like to get a lot more sample code and 
tutorials in there.

The second is a collection of pointers to reference documentation for 
developers:

    http://wiki.laptop.org/go/API_Reference

At present a lot of this documentation is actually auto-generated pydoc 
stuff, particularly for the in-house stuff.  For much of the GTK-related 
stuff this is of little value due to the lack of method signatures or 
useful docstrings.  If you are the owner of any of these packages (e.g. 
abiword, hippo, hulahop) and have documentation available online, please 
update your package's entry to point to the documentation.

Note: the various Sugar services and the Sugar GUI Shell are not 
documented because they are not importable and are using top-level 
executable code.  We should probably fix that structuring at some point.