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

Johannes's answer explains what "core language" means in general. In the specific context you ask about it means that the core language parts of n3050 are implemented in GCC 4.7, but not necessarily the library parts (those changes from the paper that apply to Clauses 17-30)

In fact some of the library changes are also implemented in GCC 4.7, but the library status is documented elsewhere