hi, i'm new to terragen 2, but already made a couple of nice things using terragen 0.9

, anyway, i'm using the free non-commercial version, and i wondered, i saw terragen 2 uses a complete planet, but how do you see move your camera around the planet? the only thing i've found so far is orbit and the 'higher-lower thingy, alt+lmb'
also, when i made a map, and i decide to use it for a game, which game engines support terragen 0.9/2 maps, if any?
*edit* i've also seen you can add trees etc. with terragen 2, is there are tutorial somewhere on 'planting' trees? if that is possible witht he free version