Found it:
http://www.project1999.com/forums/sh...03#post1713103
OK. So 20 feet away while standing up and the level difference should maybe agro (where is the proof?), this is hard to say. Sitting down with the same distances sounds about right, meaning agro should occur no matter level difference.
Sitting down, with no LOS, or even LOS and the closest NPC is 30+ range/feet or whatever, shouldn't agro. Z access needs to be checked as well for correct mathematical equation.
Maybe the poster has some clout or is trusted, but certainly there is something that isn't correct.
Certain mobs throughout many zones seem to have different agro rules, like level 1 skeletons who will attack anyone no matter the level unlike a threatening level 1 *non-skelly* pathing over you.