XML Sintaxes completas representadas por Diagrama Sintático - Diagrama de Sintaxe (ver convenções) ou BNF (ver convenções). Diagrama Sintático - Diagrama de Sintaxe | Diagrama Sintático - Diagrama de Sintaxe e BNF | BNF xml : prolog element Comment prolog : XMLDDecl? Comment (doctypedecl Comment)? element : EmptyElementTag | stag content etag Comment : '<!--' ('-'? Char_)* '-->' XMLDecl : <'?'xml VersionInfo EncodingDecl? SDDecl? '?'> doctypedecl : <'!'DOCTYPE Name ExternalID? ('[' intSubset ']')? > EmptyElementTag : '<' Name Attribute* '/>' stag : '<' Name Attribute* '>' content : CharData? ((element | Reference | CDSect | Comment) CharData?)* VersionInfo : 'version''='("'" VersionNum "'" | '"' VersionNum '"') EncodingDecl : 'encoding''='('"' EncName '"' | "'" EncName "'" ) SDDecl : 'standalone''='(("'" ('yes' | 'no') "'") | ('"' ('yes' | 'no') '"')) ExternalID : 'SYSTEM' SystemLiteral | 'PUBLIC' PubidLiteral SystemLiteral intSubset : (markupdecl | DeclSep)* Attribute : Name '=' AttValue Reference : EntityRef | CharRef markupdecl : elementdecl | AttlistDecl | EntityDecl | NotationDecl | Comment DeclSep : PEReference | ['WFC: PE Between Declarations'] EntityRef : '&' Name ';' elementdecl : '<!ELEMENT' Name contentspec '>' AttlistDecl : '<!ATTLIST' Name AttDef* '>' EntityDecl : GEDecl | PEDecl NotationDecl : '<!NOTATION' Name (ExternalID | 'PUBLIC' PubidLiteral) '>' PEReference : '%' Name ';' contentspec : 'EMPTY' | 'ANY' | Mixed | children AttDef : Name AttType DefaultDecl GEDecl : '<!ENTITY' Name EntityDef '>' PEDecl : '<!ENTITY' '%' Name PEDef '>' Mixed : '(' '#PCDATA' Name* ')*' | '(' '#PCDATA' ')' children : (choice | seq) ('?' | '*' | '+')? AttType : 'CDATA' | 'ID' | 'IDREF' | 'IDREFS' | 'ENTITY' | 'ENTITIES' | 'NMTOKEN' | 'NMTOKENS' | 'NOTATION' '(' Name* ')' | '(' Nmtoken* ')' DefaultDecl : '#REQUIRED' | '#IMPLIED' | ('#FIXED'? AttValue) EntityDef : EntityValue | ExternalID ('NDATA' Name)? PEDef : EntityValue | ExternalID choice : '(' cp+ ')' seq : '(' cp ( ',' cp )* ')' EntityValue : '"' ([^%&"] | PEReference | Reference)* '"' cp : (Name | choice | seq) ('?' | '*' | '+')? extSubset : TextDecl? extSubsetDecl TextDecl : '<?xml' VersionInfo? EncodingDecl '?>' extSubsetDecl : ( markupdecl | conditionalSect | DeclSep)* conditionalSect : '<![' 'INCLUDE' '[' extSubsetDecl ']]>' | '<![' 'IGNORE' '[' ignoreSectContents* ']]>' ignoreSectContents : Ignore ('<![' ignoreSectContents ']]>' Ignore)* Ignore : Char* '-' (Char* ('<![' | ']]>') Char*) extParsedEnt : TextDecl? content symbol : expression CharRef : '&#' ['0-9']+ ';' | '' ['0-9a-fA-F']+ ';' VersionNum : '1.' ['0-9']+ EncName : ['A-Za-z'] (['A-Za-z0-9._'] | '-')*