<?xml version="1.0"?>+
−
<!-- Attribute uniqueness: repeated attribute with different prefixes -->+
−
<foo xmlns:a="http://example.org/~wilbur"+
−
     xmlns:b="http://example.org/~wilbur">+
−
+
−
<bar a:attr="1" b:attr="2"/>+
−
+
−
</foo>+
−