- * Programmatically defined {@link NamespaceContext}, code contributing
- * namespaces MUST register here with a single default prefix.
+ * Programmatically defined {@link NamespaceContext}, which is valid at runtime
+ * (when the software is running). Code contributing namespaces MUST register
+ * here with a single default prefix, nad MUST make sure that stored data
+ * contains the fully qualified namespace URI.