638 Extensible Markup Language 1.0 XML (1.0) Text (Mark-up) Full The Extensible Markup Language (XML) is a general purpose markup language for creating other, special purpose, markup languages, and is a simplified subset of SGML. The structure and grammar of an XML document can be defined using a markup declaration, such as a Document Type Definition (DTD) or XML schema. A XML document consists of nested elements, each of which may have attributes and content. It typically begins with an XML declaration, defining the XML version and character set used. This may be followed by a Document Type declaration, containing or pointing to a markup declaration for the class of document. An XML document is said to be well-formed if it conforms to the XML specification; it is said to be valid if it additionally complies with a defined markup declaration. The formatting and transformation of XML documents can be controlled using the Extensible Stylesheet Language (XSL). Text 01 Jan 1998 1 Digital Preservation Department / The National Archives 11 Mar 2005 14 Sep 2018 application/xml MIME fmt/101 PUID public.xml Apple Uniform Type Identifier text/xml MIME xml File extension 34 XML 1.0 XML declaration and version. Signature updated November 2011 to allow an optional 3 byte undisclosed beginning of file offset to allow for UTF-8 byte order mark (BOM) that may precede the XML declaration ([<?xml version="]) 1 Absolute from BOF 0 3 3C3F786D6C2076657273696F6E3D(22|27)312E30(22|27) Has lower priority than 310 Internet Archive Has lower priority than 319 Geography Markup Language Has lower priority than 429 XML Schema Definition Has lower priority than 634 Scalable Vector Graphics Has lower priority than 635 Scalable Vector Graphics Has lower priority than 643 Extensible Hypertext Markup Language Has lower priority than 644 Extensible Hypertext Markup Language Has lower priority than 768 DROID Signature File Format Has lower priority than 769 DROID File Collection File Format Has lower priority than 931 Synchronized Multimedia Integration Language (Generic) Has lower priority than 942 Microsoft Visio XML Drawing Has lower priority than 973 GPS Exchange Format Has lower priority than 975 Keyhole Markup Language (XML) Has lower priority than 1021 LaTeX (Subdocument) Has lower priority than 1029 WARC Has lower priority than 1078 Chemical Markup Language Has lower priority than 1158 Internet Archive Has lower priority than 1191 Scalable Vector Graphics Tiny Has lower priority than 1262 Microsoft Management Console Snap-in Control file Has lower priority than 1283 TransXchange File Format Has lower priority than 1359 Domino XML Document Export Has lower priority than 1360 Domino XML Database Export Has lower priority than 1367 X3D Has lower priority than 1368 X3D Has lower priority than 1369 X3D Has lower priority than 1370 X3D Has lower priority than 1371 Vector Markup Language Has lower priority than 1452 INTERLIS Transfer File Has lower priority than 1453 INTERLIS Model File Has lower priority than 1462 Industry Foundation Classes XML Has lower priority than 1469 PKCS #7 Cryptographic Message File Has lower priority than 1496 Additive Manufacturing File Format Has lower priority than 1694 AbiWord Document Has lower priority than 1695 AbiWord Document Template Has lower priority than 1700 MusicXML Has lower priority than 1737 Mathcad Document Has lower priority than 1770 Music Encoding Initiative Has lower priority than 1784 XML Property List Has lower priority than 1785 AAE Sidecar Format Has lower priority than 1786 EazyDraw File Format Has lower priority than 1787 iMovieProj File Format Has lower priority than 1788 NIB File Format Has lower priority than 1816 INTERLIS Transfer File Has lower priority than 1844 Redcode Metadata (RMD) File Has lower priority than 1852 Geography Markup Language Has lower priority than 1899 Scribus Document Has lower priority than 1944 GPS Exchange Format Has lower priority than 1967 Folio Infobase File Has lower priority than 2019 COLLADA Digital Asset Exchange (DAE) Has lower priority than 2029 Gnumeric Has lower priority than 2042 SK-XML Has lower priority than 2044 DIGIDOC-XML Has lower priority than 2045 DIGIDOC-XML Has lower priority than 2046 DIGIDOC-XML Has lower priority than 2059 FO File Has lower priority than 2192 xdomea Has lower priority than 2193 xdomea Has lower priority than 2194 xdomea Has lower priority than 2195 xdomea Has lower priority than 2196 xdomea Has lower priority than 2197 xdomea Has lower priority than 2198 xdomea Has lower priority than 2206 Muvee Reveal Project File Has lower priority than 2286 Ableton Live Set Has lower priority than 2297 TEI P4 XML - Single Text File Has lower priority than 2298 TEI P4 XML - Corpus File Has lower priority than 2299 TEI P5 - Single Text File Has lower priority than 2300 TEI P5 XML - Corpus File Has lower priority than 2322 Adobe Audition Session File Has lower priority than 2324 XML Forms Data Format Has lower priority than 2326 Agisoft Project File Has lower priority than 2368 ELAN Annotation File Has lower priority than 2369 ELAN Preference File Has lower priority than 2392 ISDOC Information System Document Has lower priority than 2395 ISDOC Information System Document Has lower priority than 2440 XML Shareable Playlist Format Has lower priority than 2468 Adobe InDesign Interchange Document Has lower priority than 2505 Roxio Data Project File Has lower priority than 2506 Roxio Audio Project File Has lower priority than 2568 LegalDocML Document Has lower priority than 2569 Capture One Settings File Has lower priority than 2573 Esri Shapefile Geospatial Metadata File Has lower priority than 2615 Media Hash List Has lower priority than 2621 ESRI Persistent Auxiliary Metadata File Has lower priority than 2647 Wireless Markup Language (WML) Document Has lower priority than 2650 FLExText Interlinear XML Format Has lower priority than 2653 Transcriber AG TAG Format Has lower priority than 2654 Transcriber TRS Format Has lower priority than 2664 xdomea Has lower priority than 2675 Audacity Project File Has lower priority than 2676 Audacity Project File Has lower priority than 2697 Final Draft Document Has lower priority than 2706 Camtasia Studio Project Has lower priority than 2711 Capture One Session File Has lower priority than 2736 OPML File Has lower priority than 2738 OPML File Has lower priority than 2756 Mass Spectrometry Markup Language Has lower priority than 2808 Draw.io Diagram (XML) File Has lower priority than 2827 SolidWorks Material Database File Has lower priority than 2871 IMF Package Asset Map Has lower priority than 2872 IMF Package Packing List Has lower priority than 2873 IMF Package Composition Playlist Has lower priority than 3891 GraphPad Prism Has lower priority than 3906 Open Packaging Format Has lower priority than 3907 Daisy Talking Book Navigation Control File Has lower priority than 3909 Daisy Talking Book Resource File Has priority over 639 Hypertext Markup Language Has priority over 640 Hypertext Markup Language Has priority over 641 Hypertext Markup Language Has priority over 642 Hypertext Markup Language Has priority over 645 Hypertext Markup Language Is supertype of 931 Synchronized Multimedia Integration Language (Generic) Is supertype of 1283 TransXchange File Format Is supertype of 1694 AbiWord Document Is supertype of 1695 AbiWord Document Template Is supertype of 1700 MusicXML Is supertype of 1737 Mathcad Document Is supertype of 1770 Music Encoding Initiative Is supertype of 1852 Geography Markup Language Is supertype of 1944 GPS Exchange Format Is supertype of 2029 Gnumeric Is supertype of 2192 xdomea Is supertype of 2193 xdomea Is supertype of 2194 xdomea Is supertype of 2195 xdomea Is supertype of 2196 xdomea Is supertype of 2197 xdomea Is supertype of 2198 xdomea Is supertype of 2626 Extensible Markup Language Is supertype of 2697 Final Draft Document Has lower priority than 3966 FCPXML Interchange Format Has lower priority than 3965 Final Cut Pro XML Interchange Format Has lower priority than 3955 xdomea Has lower priority than 1679 RDF/XML