Exists property is now 2 when entity is a level spawn. This allows a modder to confirm an entity is or is not a level spawn without resorting to unreliable metadata or additional variables. Depending on need and feasibility I may look into adding other spawn condition indicators as well (i.e. 1 = script spawn, 2 = level spawn, 3 = item drop, and so on). Note the various Exists evaluations already in place are all true/false, so there are no backward compatibility problems. Just take note of this change should you wish to make a specific numeric evaluation of the Exists property moving forward.