region The vertical parts of the World Tree: the sides of the branches, the trunk, etc. Primes are rarely willing to spend the effort required to tame and live in the Verticals, so they are generally wild and dangerous; monsters live there. Since world-branches are only so wide, the Verticals are never more than about thirty miles from the heart of even the most civilized city.

Same as uprights.

Industry-specific (e.g., healthcare or retail sales) markets.