DeLorme 6 - Manual (Page 16)

XMap User Guide
8
• What's the difference between adding and inserting a stop or via?
The Insert Stop/Via function arranges stops/vias geographically in the route.
The Add Stop/Via function adds stops/vias in the order you add them to the
route.
• Why did my route fail to calculate?
Your route will fail to calculate if you create a route:
• With a route start, stop, via, or finish point in an area that you have
designated as a Route Avoid.
• That includes route points outside the United States, Mexico, or
Canada.
• On an island without roads. In this case, XMap will look for the nearest
road to that island to place the route point. If the nearest road is not
routable (for example, it is the only road on the island and/or the
island does not have ferry access), you will get an error message
saying "Route failed to calculate."