C ++ "namespace"

Question

The C ++ specification ( http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf , section 7.5.4) states that

Binding specification should only be done in the namespace area

What does the namespace scope mean? Does this mean that a binding specification, such as extern "C", cannot be in the global scope only in the namespace?
What does the namespace scope mean?

Answer 1

, extern "C" ( -, ..). -, , - . /p >

, -names-namespace-name - , namespace- -namespace-name.