Annex D (normative) Compatibility features [depr]

D.1 General [depr.general]

This Annex describes features of the C++ Standard that are specified for compatibility with existing implementations.
These are deprecated features, where deprecated is defined as: Normative for the current revision of C++, but having been identified as a candidate for removal from future revisions.
An implementation may declare library names and entities described in this Clause with the deprecated attribute.