[uaxid.eqn]

# Annex E (informative) Conformance with UAX #31 [[uaxid]](./#uaxid)

## E.5 R4 Equivalent normalized identifiers [uaxid.eqn]

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/uax31.tex#L89)

UAX #31 requires that implementations describe
how identifiers are compared and considered equivalent[.](#1.sentence-1)

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/uax31.tex#L93)

This document requires that identifiers be in Normalization Form C and
therefore identifiers that compare the same under NFC are equivalent[.](#2.sentence-1)

This is described in [[lex.name]](lex.name "5.11 Identifiers")[.](#2.sentence-2)