Invisible collision hulls
Triggers: GoalCompleteTrigger and SkillAwardTrigger
Triggers: SpecialEvent (triggering sounds, messages, and damage)
Triggers: FlagTrigger
Triggers: LogicTrigger
Triggers: SenseTrigger (do you have the key?)
Navigation points (Path nodes, hide points, home base)
Controlling NPC behavior: Orders and order triggers
Controlling NPC behavior: AI, Combat, Fears, Reactions, and Stimuli settings
Particle generators and Effects (displaying electricity, gas, fire, smoke, sparks,
water drips)