Megahex

All creatures within five megahexes of the wizard will be thrown to the ground, and take one hit damage from cuts, bruises, and contusions.

To avert this, hexes are grouped into 'sevens' to give large "megahexes", a unit can search it's [sic] own "megahex" or up to two "megahexes" away.

If a Walker (fire power 6) shoots at a Rebel Trooper (Armor 2) one megahex away, the Imperial baddie has to roll 6 dice (for the firepower) minus 1 (for the one hex range).

There's one irregular and over-sized "mega hex" on the map: the "Shobu Group Base Area" in west-central Luzon.