How does line of sight work when the line between two hexes crosses "blank" space. Is the blank space treated as elevation 0 (doesn't interfere with line of sight at all) or as elevation infinity (blocks all line of sight)
For an example, consider Baron Blade Scenario 1. A line from the north end of tile 1 to the north end of tile 2 crosses an area with no map tiles. (assume north towards the top of the page, if you are looking at the map in the scenario guide)