How cout is for static duration?

Question

cout - C++ Reference

The object is declared in header with external linkage and static duration: it lasts the entire duration of the program.

I am using Visual Studio. If I go to its declaration it is like,

__PURE_APPDOMAIN_GLOBAL extern _CRTDATA2 ostream cout, *_Ptr_cout;

I understand its external linkage, but how it is static duration?

Answer 1

[basic.stc.static]/1 :

All variables which do not have dynamic storage duration, do not have thread storage duration, and are not local have static storage duration . The storage for these entities shall last for the duration of the program