What does “core language” mean?

Question

In the table on this page from the GCC documentation, one of the items (about halfway down the table) is listed as \"core language\" only. What does that mean? What parts of

Answer 1

The Standard library is part of the language. To express the subset of the language that concerns only with the rules of the syntax, semantic rules, and such but not with the library, people use the term core language. For example there is a working group called "core working group" (CWG) and "library working group" (LWG) in the C++ committee.