There's a section called:
The this of Parent Scopes
And it starts by saying:
Since each function has its own this binding, whose value depends on the way it is called, you cannot refer to the this of the wrapping scope in a regular function defined with the function keyword.
This is incorrectly worded. There is no concept at all of "the this of a scope", as it's not associated to a scope. So the title is not correct. Also the explanation will be confusing to novices because it, again, relates this to some wrapping scope.