This Annex describes the choices made in application of UAX #31 (“Unicode Identifier and Pattern Syntax”) to C++ in terms of the requirements from UAX #31 and how they do or do not apply to this document.

In terms of UAX #31, this document conforms by meeting the requirements R1 “Default Identifiers” and R4 “Equivalent Normalized Identifiers” from UAX #31.

The other requirements from UAX #31, also listed below, are either alternatives not taken or do not apply to this document.