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.

Source: wiktionary

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.

Source: wiktionary

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).

Source: wiktionary

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

Source: wiktionary