First: I´m from Germany, so sorry for my bad english!

I've been playing very long TTD, now OpenTTD.
In last time I´m interested in developing own graphics, specially trains.
I´m using GRFMaker, because I think it´s very clear and simply to use.
I think here are more users of GRFMaker than in the german forum, so I´m asking my question here.
I want to know how to make railcars (I mean trains with includet wagons that you must not buy seperatly) or steam locomotives with tenders using the GRFMaker.
I used the search function already, and I had not found anything about doing it with the GRFMaker.
If the question is already answered somewhere, it would be very kind when you´re giving me the Link!
