Hello, folks.
I've made a small free/OSS utility that helps me to document and/or understand the existing connectivity within an OSB domain, and to communicate my ideas in a easier to understand form. I believe it may help other OSB developers, too, hence I'm sharing it here.
The utility scans the OSB 11g sources (or the domain osb/ directory) and builds a connectivity map. A typical output looks like this:

Please feel free to try and give me your feedback:
Intro: Generating diagram of an OSB domain
Open repository on Bitbucket: https://bitbucket.org/vladimirdyuzhev/transitmap-for-osb/overview
Thanks!
Vlad.