Please take a look at
This Thread. It explains how Carbonites gather routing function works rather well.
You can also make custom routes (for any reason) by following the instructions in
This Thread.
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Ahhhh, the vagueries of the aging mind. Wait.... What was I saying?
Carbonite <----- GitHub main module (Maps ONLY) download link. The other modules are also available on GitHub.
Carbonite-CLASSIC<----- GitHub link to Carbonite Classic. Thanks to ircdirk for this!