hi,I am a new user of NS.Thanks for everybody to answer the question.My question is in wireless MIP simulation stations,how can i set the service area of BS.I have seen a toturial about Mobile IP simulation,in his article he use such as service-area <nr> <x> <y> [-r rng] [-d dy] [-t txr] [-p] [-c col].I want to know how can i do in tcl script. Thanks a lot.