Setting a directory on the project classpath ...

Hi, I hope this doesn't sound stupid ... I've just started playing around with Aurora #944 and have a simple question. How do I set a directory on my project classpath?

This is easy enough to do in 3.0.5 : from the Paths -> Classpaths tab in "Project Properties", but the "Paths" section of "Project Properties" appears to have been replaced by "Main Module" in #944. "Main Module" would only seem to allow you to set java source and libraries of jars/class files on your project classpath.

cheers,
Hoppy