Map edge half hexes?

[crak]

Are half hexes on the edge on the map and usable for movement or off the map?

I'm going with on map for now. I'm playing Desert Heat and it matters for some movement around a minefield, bringing on reinforcements, and needing to move troops off the edge of the map for victory.

 

[Wickedvicar]

I just saw your post and wondering this as well for Desert Heat.