Papyrus/Papyrus Developer Guide
To ease the development on Papyrus, each member of the team works with basically the same configuration :
-  Eclipse Modelling 3.5
-  SVN Subversive (or Subclipse)
-  CheckStyle
-  JAutoDoc
Getting the code
Connecting to the svn
The code is available under svn at this location http://dev.eclipse.org/svnroot/modeling/org.eclipse.mdt.papyrus/
PSF Files can be found on the plugin org.eclipse.mdt.papyrus.releng under the folder psf.
Check out this project, and import the "Papyrus-ALL-pserver.psf".
Retrieve configuration files
A note is also available to explain how to install the templates in your environment.