[depr.general] # Annex D (normative) Compatibility features [[depr]](./#depr) ## D.1 General [depr.general] [1](#1) [#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/future.tex#L6) This Annex describes features of this document that are specified for compatibility with existing implementations[.](#1.sentence-1) [2](#2) [#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/future.tex#L10) These are deprecated features, where[*deprecated*](#def:deprecated) is defined as: Normative for the current revision of C++, but having been identified as a candidate for removal from future revisions[.](#2.sentence-1) An implementation may declare library names and entities described in this Clause with the[deprecated attribute](dcl.attr.deprecated "9.13.4 Deprecated attribute [dcl.attr.deprecated]")[.](#2.sentence-2)