[SCRIPT] Questions on scripts and script placement.

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Item Interactions and Collide Callbacks should always be placed in OnStart?

As i said, that depends on what you want to accomplish. The functions used to set up callbacks tend to allow you to declare whether or not you want that callback to remain after triggering it. OnStart gets called once for each new session of the map. (Loading a save is not a new session, and so it doesn't get called then.) OnEnter gets called every time the map is loaded outside of saves. All of this means there is one point in time where OnStart and OnEnter are both called, but every other time only OnEnter would be called.