RSPT System - (Rune Stone Portal teleportation System)
Essentially this script will allow you to travel between towns/cities placed in your module by acquiring a rune stone for each portal. It works very similar to the system found in the PC game "Divine Divinity". There is no scripting required at all to use this system. You simply need to import the .erf file, place your portals and waypoints, rename them to fit your module and then distribute the rune stones how you see fit.
I have included an example module in the download and a readme with instructions for installation.