I'm new to nitro cars,I understand,(lhs,hsn,lsn)but that's about it.Could someone please post an explanation of the other ones,(here or in the FAQ,s)?Finaly,why must one have 100 or more posts to list something to sell? I am not a chatter and cannot visualize myself at 50 posts,much less 100.I have nothing to sell,just curious. Thanx, Gus