What Does the XML Standard Say About Conformance?

Section 2.8 - Prolog and Document Type DeclarationSection 5. - ConformanceNote that the final recommendation never mentions the word "parser", so the successful act of parsing an XML file for fatal and non-fatal errors is probably not sufficient.

+//ISBN 1-894049::CSL::OASIS::Presentations//DOCUMENT XML Conformance 1998-03-27 13:40//EN
XML'98 Conference
Copyright © OASIS