XML NameLanguageDeprecated API usage in XML XMLDeprecated symbol XMLDuplicate 'id' attribute XMLEmpty element content XMLFailed external validation XMLRedundant attribute with default value XMLUnbound namespace prefix XMLUnresolved 'id' reference XMLUnresolved DTD reference XMLUnresolved file reference XMLUnused schema declaration XMLWrong root element XMLXML highlighting XML Last modified: 13 July 2023 Unrecognized slot Deprecated API usage in XML