Splat Maps?

Heys guys, i have been working hard on a produral terrain and i wanted it to auto texture and could not find a way, so i changed it from moddifing a plane to modifing terrain as a height map. The problem now is i still carnt auto texture it. splatmaps have come up alot on google searchesand seem like the right direction but i carnt find any documentation on this, do you guys have any help for me, thanks

If you are now using terrian (actual) and splatmaps, take another look at this blog post and adapt