At the moment there is no easy way to collect all documentation from the metamodel. If you are fluent in SQL, you could perform a query on the Modeler database to extract this data. However, a more friendly way to generate a documentation overview would be a nice feature request.
In what kind of structure would you like this print? It is now possible to document nearly everything in the modeler (from attributes to xml-mappings).
A simple dump of all this documentation wouldn't be helpfull for the communication purposes I think...