Hello, > Just to let you know, the edition 2 specification has corrected this > issue to state that: Cool. Thank you to let us know. =2E.. Oops, XmlTextWriter.LookupPrefix still described as it returns String.Empty ;-) If you know, would you please tell me whether it was in the discussion and decided to keep as is, or not? Anyway, thanks again! -- Atsushi Eno