Atomic Systems

I've just found this route, and it is pretty nice.

One thing that would really help me though is a route map. For example, I can't tell how all of the tram routes work, which ones are in which city, etc. For example are Barrie and Bury the same place with slightly different routes or is it a different city.

A map or some other help in orienting myself would be good...

I've been exploring this route quite a bit.

I've found London on the route, but it doesn't show up as an option to start from (along with many of the huge selection of stations available on this route...)

How do you set it to start from London?