trigger_callback

This entity is obsolete. Using this is discouraged.

Code classes:

• CTriggerCallback
• CBaseTrigger (triggers)
• CBaseToggle
• CBaseEntity (all ents)

trigger_callback is a brush entity present in Left 4 Dead 2. It's an unused, broken entity. It tries to pretend that the parent of the entity that touches it is what actually touched it. Outputs appear to not fire.