Hi Robert,
I would also appreciate some help, apart from the usual testing. While there is probably nobody familiar enough with the internals (or am I wrong?), the topic accessible to some of you is the documentation, namely the 'functions' keyword and change to materials definition - if you feel like fixing this at [1], go ahead, please.
I would also like to set-up a sphinx-based documentation site for sfepy, like [2] or [3], probably using github. Any volunteers out there? I have made some attempts to learn how to do it, but have currently no time to go on. And yes, new functions added to sfepy are documented and use the sphinx-compatible format, following the numpy's standards.
[1] http://code.google.com/p/sfepy/wiki/ProblemDescription
[2] http://docs.scipy.org/doc/
[3] http://docs.sympy.org/