This would be a good discussion for the Prawn mailing list.  Post there and I'll reply with some details (and the other devs will likely chime in as well).<p>Just let us know what sort of feature set you want to implement, and we can point you to the relevant spec sections and supporting materials.<p>Prawn's source is pretty readable, and will be even more so as we refactor.  A trip through the source might help, too:<p><a href="http://github.com/sandal/prawn" rel="nofollow">http://github.com/sandal/prawn</a>