Jazz Metamodel available?

Hence my question: Is there something like a one page class diagram of
the Jazz / RTC elements and their relationships? Also useful would be
an Instance Diagram with a small example.

I try to understand how things like Work Item, Work Item Category,
Team Area, Development Line, Iteration, Process Template, Process
Settings, Plan etc. relate to each other.

The same I'd like to do for the configuration part of Jazz (Stream,
Change Set etc.).

I was able to reverse-engineer parts of this, based on using RTC and
reading the end user documentation, but I am not convinced that I got
it right...

Hence my question: Is there something like a one page class diagram of
the Jazz / RTC elements and their relationships? Also useful would be
an Instance Diagram with a small example.

Thanks! Martin