NPC's, allies, etc., ratings

From: Steve Lieb <styopa_at_...>
Date: Thu, 24 Feb 2000 07:00:24 -0800

I noticed in Wesley's character listings allies with ratings like "Jest 4/16"

I don't have the rules in front of me - could someone explain this notation and how/why it's different from the simple "skill" of Jest 16?

Thanks!!