Required and used to describe a VRChat world, one per scene.

SpawnsAn array of transforms used as reference for spawn points of the world
Spawn OrderOrder in which spawn locations should be used, options include:
First - Always use the first spawn
Sequential - In the order that spawns are listed
Random - Spawns users in randomly
* Demo - The spawn point represents the center of your room scale meaning e.g. If you're a meter away from the center of your room scale, you spawn a meter away from the spawn
Spawn OrientationOrientation the user will be spawned in at, options include:
Default - The VRChat Default spawn setting (Currently Align Player With Spawn Point)
Align Player With Spawn Point - Aligns player with the rotation of the spawn transform
* Align Room With Spawn Point - Aligns players room scale to be centered on spawn point
Reference CameraSettings from this camera are applied to users in the room. Can be object in scene or prefab
Respawn Height -YHeight in which players respawn and pickups are respawned or destroyed
Object Behaviour At RespawnWhat should pickups do when they fall out of the world, options include:
Destroy - Delete the pickup
Respawn - Respawn the pickup to the location it started at
Forbid Free ModificationIf true, non-sync'd objects can't be manipulated by non-master
Forbid User PortalsPrevent users from opening portals from the world menu
User Custom Voice Falloff RangeEnabled the next couple options which control the voice falloff range
Voice Falloff NearThe distance where users voices start reducing in volume
Voice Falloff FarThe distance where users voices become inaudible
Unity VersionUnity version being used, you should never need to touch this
Dynamic PrefabsAn array of prefabs that can be dynamically spawned at runtime. Any prefab that isn't referenced in the scene but needs to be spawned should be listed here.
Dynamic MaterialsAn array of materials that can be dynamically changed at runtime. Any material that isn't referenced in scene but needs to be set to an object should be listed here.

Any changes the user makes to the size/array will get overwritten on export by the auto-generated list each time.