I wrote something about the basic file format at
http://www.fx2100.com/eq1ff_1.txt
Please check it as it is from memory and may have fields in the wrong order or have detail wrong.
And this is just some very early thoughts. It needs a lot of tidying up and putting in a nicer format but I though it useful to at least get it down on "paper".
I'll add what detail I can on the static model format when I get the chance.