This document records all known errors in the Namespaces in XML 1.1 specification.
In the Namespace constraint: Reserved Prefixes and Namespace Names, at the end of the paragraph beginning "The prefix xml ...", replace the full stop with a comma and add "and it MUST NOT be declared as the default namespace".
In the same constraint, at the end of the paragraph beginning "The prefix xmlns...", replace the full stop with a comma and add "and it MUST NOT be declared as the default namespace. Element names MUST NOT have the prefix xmlns."