Hello, I'm editing an HTML document in Oxygen. The document begins with <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> When I try to save, Oxygen shows an "error" in the DTD: SystemID: http://www.w3.org/TR/html4/strict.dtd Location: 81:5 Description: The declaration for the entity "ContentType" must end with '>'. The offending location is the second of these three lines in strict.dtd: <!ENTITY % ContentType "CDATA" -- media type, as per [RFC2045] --> Maybe this is because the DTD is an SGML DTD rather than an XML one? I don't know, but it seems strange for a W3C DTD to be called erroneous! Incidentally, I think this DOCTYPE declaration was added by HTML Tidy, or possibly by an HTML editor program. Lars