[Bugzilla bug (if applicable)] Bugzilla 17282 [Erratum (if applicable)] None [Category] Substantive [Affected sections] 3 Serialization Parameters B Schema for Serialization Parameters [Description of change] 
Changed type of the normalization-form serialization parameter to NMTOKEN. This would be an incompatible change from XQuery 1.0, for any implementation that supported the Serialization Feature, and supported an implementation-defined value for the normalization-form serialization parameter that did not have the lexical form of an NMToken.