This is a thread for creating a basic addon that feeds a pre-defined list of coordinates into TomTom, which would allow routing between waypoints in different zones in a specific order (first discussed in
this thread).
As an example, creating a series of waypoints for this route shown here:
http://i.imgur.com/xaCRdtq.jpg
Phanx had kindly offered to share some code to help get me started.