[dev] OTRS documentation contribution

Hello, I was thinking about participating in the documentation of OTRS. We are using OTRS ourselves and I'm following the OTRS mailing list for some time now. I think the manual lags some basic explaination of term and of what certain configurations and actions implicate (what is eskalation, what is forward etc.). Those should be cleared out so that one can say "rtfm" Questions are: How to contriubute ? Which format ? Which language ? Is there some kind of guide ? Thank you, Robert Heinzmann p.s. I know that there is a "doc" mailinglist but unfortunately I don't know the e-mail address anymore. :)