[schveiguy]

Oof, seems I got the camelcase wrong. It's `@mustuse`

Working on updating that.

I think the reason the documentation is cryptic is because it's a library-supplied User Data Attribute that is specially recognized by the compiler. The documentation generator is having trouble with it. In code it's pretty simple:

https://github.com/dlang/druntime/blob/705fb36e5fc4d930eed85...