thanx,

I will make a patch probably next week, I'm collecting bugs too...

definitely, the most difficult and time consuming thing is a good GUI...

I'm always postponing dealing with terrain manipulation, because there are some really nice free tools for it, and I'm not sure it would worth the time and energy... I have collected some stuff for it, so maybe once I will do it... but I will make a L3DT+3DGS tutorial first, because I really like that.