@benkar
TOPO maps have traditionally been without routing. Main usage would be for activities like walking, hiking & trekking. They aren't intended to be used for road navigation with vehicles.
Some of the newer TOPO maps have introduced a mix of road navigation and trail usage. In that case they are also candidates to use NT compression. NT is only used for maps with routing.
You have to navigate to get to the good.
Galaxy S5 Kitkat 4.4.2 / Nuvi1200->1250 / Nuvi3790T->34xx / Nuvi 2200 / Nuvi 66 / Oregon 600
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