Region3Int16 and Vector3Int16 pages don't explain what they are at all

https://developer.roblox.com/api-reference/datatype/Region3int16
https://developer.roblox.com/api-reference/datatype/Vector3int16

These are used as parameters in Terrain:CopyRegion() and Terrain:PasteRegion() which also don’t explain them at all.

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I believe they’re just 16 bit vector and region values, since i can only get 32,768 as max value (2^16/2-1)

That being said, still do need documentation

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