From df9256a079331250d7e0c8a2172aab1b9b02462f Mon Sep 17 00:00:00 2001
From: Kevin Gibbons <bakkot@gmail.com>
Date: Tue, 16 Feb 2021 14:47:28 -0800
Subject: [PATCH] Editorial: dfn Normative Optional (#2311)

---
 spec.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spec.html b/spec.html
index 9bdc76375d..7535f198f3 100644
--- a/spec.html
+++ b/spec.html
@@ -142,7 +142,7 @@ <h1>Conformance</h1>
   <p>A conforming implementation of ECMAScript may support program and regular expression syntax not described in this specification. In particular, a conforming implementation of ECMAScript may support program syntax that makes use of any &ldquo;future reserved words&rdquo; noted in subclause <emu-xref href="#sec-keywords-and-reserved-words"></emu-xref> of this specification.</p>
   <p>A conforming implementation of ECMAScript must not implement any extension that is listed as a Forbidden Extension in subclause <emu-xref href="#sec-forbidden-extensions"></emu-xref>.</p>
   <p>A conforming implementation of ECMAScript must not redefine any facilities that are not implementation-defined, implementation-approximated, or host-defined.</p>
-  <p>A conforming implementation of ECMAScript may choose to implement or not implement Normative Optional subclauses. If any Normative Optional behaviour is implemented, all of the behaviour in the containing Normative Optional clause must be implemented. A Normative Optional clause is denoted in this specification with the words "Normative Optional" in a coloured box, as shown below.</p>
+  <p>A conforming implementation of ECMAScript may choose to implement or not implement <dfn>Normative Optional</dfn> subclauses. If any Normative Optional behaviour is implemented, all of the behaviour in the containing Normative Optional clause must be implemented. A Normative Optional clause is denoted in this specification with the words "Normative Optional" in a coloured box, as shown below.</p>
   <emu-clause id="sec-conformance.normative-optional" example normative-optional>
     <h1>Example Clause Heading</h1>
     <p>Example clause contents.</p>