training a backprop network using odor world data

Hi,

Thanks for putting up Sim brain. it is a very useful tool to teach neural nets.

I am trying to play with training backprop networks using odor world. backprop 3-5-3.sim and backprop auto-3.sim are the demos. But they are networks that are already trained, and we can just run them. How was the training acheived? using what data?

Thanks