return scope vs. scope return

[0xEAB via Digitalmars-d-learn]

Apparently there a difference between:

- ```d
  Message withBody(Body body_) return scope { /* … */ }
  ```
- ```d
  Message withBody(Body body_) scope return {  /* … */ }
  ```

```

Deprecation: returning `this._body` escapes a reference to parameter `this`

       perhaps change the `return scope` into `scope return`
```

What is it?
And why (…does the order of attributes matter)?