Integration tests? And online help?



I'm just enjoying testing maxima's symbolic integration strengths.  I've
discovered that Reduce comes with a test suite of integrals taken from a
variety of sources, which can then be run through the system.  Does maxima
have an integration test suite - and if so, where can I find it?

Also, I've just installed maxima 5.20.1 on Ubuntu, but for some reason the
online help doesn't work: commands like "?? int" return nothing.  What magic
is required to get this working?

Thanks,
Alasdair

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