I found this function in the Script Editor and there is no documentation. I know it is a userdata, but how can you use it in scripts in a real way? Any ideas would be appreciated!
Quoting from a devforum post...
..you can use it to make custom object behaviour. using newproxy(true) will create a empty userdata which you can set the metatable to customize it's behaviour.
(original devpost: https://devforum.roblox.com/t/what-is-newproxy-and-what-is-it-good-for/184454/2)