diff --git a/index.bs b/index.bs
index 385993f4..3ba62453 100644
--- a/index.bs
+++ b/index.bs
@@ -5137,6 +5137,12 @@ useful when constructing the exception's [=exception/message=].
Let object be a newly [=created=] "{{SyntaxError}}" {{DOMException}}.
+
+ To [=reject=] a promise with a new {{DOMException}} with [=error name=] "{{OperationError}}":
+
+
+ [=Reject=] p with an "{{OperationError}}" {{DOMException}}.
+
@@ -14474,6 +14480,10 @@ A {{DOMException}} is represented by a
situation. The calling specification may contain information to to help implementations
construct this message.
+ Implementations need to be cautious not to leak sensitive or secured information when
+ constructing this message, e.g., by including the [=Document/URL=] of a cross-origin frame,
+ or information which could identify the user.
+
1. Let |args| be « |message| ».
1. Let |constructor| be [=current realm=].\[[Intrinsics]].[[%|T|%]].