NAB -- Help???

Hello All,
          I am a beginner to sensor network simulation. I found out NAB
simple and powerful enough for my application. A big "Thanks" to
all who developed it. I would like to know, that the set of
commands (or the NAB APIs) that we type in at the prompt (I
believe its the ocaml toplevel), is the ocaml language? (Sorry
guys, I didnt get really started on reading yet). Also another
question I have is that is there a radio model implemented in
NAB? . Any help in this direction is greatly appreciated. Thank
you all for your precious time.

Senthil Rajan,
Systems Administrator
Dept Of Computer Science,
#148 Martin Speare Bldg
NMT, Socorro 87801, U.S.A
Phone: Off - 505 835 5049
       Res - 505 385 4244