edited with XML Spy v4.2 U (http://www.xmlspy.com) by Jerome McDonough (private) 

 METS: Metadata Encoding and Transmission Standard 

 Copyright © 2001, 2002, 2003 Digital Library Federation 

 Prepared for the Digital Library Federation by Jerome McDonough, New York University,
with the assistance of Rick Beaubien (University of California), Morgan Cundiff (Library of 
Congress), Susan Dahl (University of Alberta), Richard Gartner (Bodleian Library at Oxford),
Nancy Hoebelheirich (Stanford University), Mark Kornbluh (Michigan State University),
Cecilia Preston (Preston & Lynch), Merrilee Proffitt (Research Libraries Group),
Richard Rinehart (Berkeley Art Museum/Pacific Film Archive), Mackenzie Smith (Massachusetts
Institute of Technology), Taylor Surface (OCLC), Brian Tingle (California Digital Library) and
Robin Wendler (Harvard University).

 Dec. 27, 2002 

 Version 1.2 

 Change History 

 April 23, 2001: Alpha Draft completed 

 June 7, 2001: Beta completed 

 6/7/2001 Beta Changes: 
	1. add 'Time' as a possible time code value, as well as TCF.
	2. Make dmdSec ID attribute required; make ID attribute optional on MDRef/MDWrap.
	3. Add 'Label' attribute to StructMap, along with 'Type'.
	4. Add DDI and FGDC as potential metadata schemes to enumeration.
	5. Enable an "otherMDtype" attribute for MDWrap/MDRef and any other element where
	    there's an 'other' in the enumerated possibilities.
	6. Add a "profile" attribute to METS element.
	7. Revised mptr declaration so that it's like FLocat/MDRef (and not like XLink)
	8. Extend internal documentation of <area> attributes.
	9. Add "other" to the possible set of LOCTYPEs.
	10. Change ADMIDS to ADMID on FileGrp.
	11. Change "N" to "Order" on <div> element.
	12. Change "Number" to "order label" on <div> element
	13. Add createdate and lastmoddate attributes to mets element.
	14. Allow <div> and <area> elements to link to administrative metadata sections.
	15. Normalize attribute pointing facilities for file element and mdRef.
	16. Provide a LOCTYPE of "other" and an "otherloctype" attribute for pointing to external files.
	17. Drop PDI from enumeration of LOCTYPES.
	18. Make MDTYPE required in mdRef and mdWrap.
	19. Rename preservationMD to digiprovMD.
	20. Add optional CHECKSUM attribute to FContent element.
	21. Modularize declarations of fileGrpType and mdSecType attributes and enumerations to
		simplify maintenance.
	22. Add TYPE attribute to structMap.
	23. Declare structMap element using structMapType rather than direct declaration.
	24. Add area element as possible subelement to <div>, along with par and seq.
	25. Change mdSec model to ALL, to enable differing order of mdRef/mdWrap elements.
	26. Extend documentation on <par> and <seq> elements.
 

 October 22, 2001: Gamma completed 

 10/22/2001 Gamma changes:
 	1. Added optional fileSec element beneath METS root element to contain fileGrps.
 	2. Created subsidiary schema file xlink.xsd for XLink attributes, restored XLink attributes
 	to mptr element, and added XLink support to mdRef and FLocat.
 	3. Created new element metsHdr to handle metadata regarding METS document
 	itself (analogous to TEI Header).  Moved CREATEDATE and LASTMODDATE attributes
 	to metsHdr, and added new RECORDSTATUS attribute.  Added new subsidiary elements
 	agent and altRecordID to metsHdr.
 	4. Made CREATEDATE and LASTMODDATE attributes type xsd:dateTime to allow more precise
 	recording of when work was done.
 	5. Changed all attributes using data type of xsd:binary to xsd:base64Binary to conform to final
 	W3C schema recommendations.
 	6. Cleaned up annotations/documentation.
 

 December 19, 2001: Epsilon and PROTOFINAL completed

 12/19/2001 Epsilon changes:
 	1. Changed sequence operator for StructMap so that only 1 root div element is permitted.
	2. Add new roles to agent element's role attribute and support for extensible 'other' role.
	3. Add support for extensible 'other' type attribute on agent element.
	4. Yet more documentation clean up.
	5. Relocate CHECKSUM attribute from FContent to File element.
	6. Change the file element's CREATED attribute and fileGroup's VERSDATE attribute to 
	a type of xsd:dateTime
	7. Change attribute name DMD for div element to DMDID for consistency's sake.
	8. Added new behaviorSec for support of referencing executable code from METS object
 

 February 8, 2002: Zeta bug fix to final 

 2/8/2002 Zeta changes:
 
 	1. Eliminated redundant VRA in metadata type enumeration.
 	2. Changed mdWrap content model, adding xmlData element to eliminate
 		ambiguous content model
 

 June 3, 2002: Version 1.1 

 6/3/2002 v1.1 changes:
 
  	1. Add new structLink section for recording hyperlinks between media represented by structMap nodes.
	2. Allow a <par> element to
	contain a <seq> 

 Dec. 27, 2002: Version 1.2 

 12/27/2002 v1.2 changes:
1. Add “USE� attribute to FileGrp, File, FLocat and FContent;
2. Make FLocat repeatable;
3. Have FContent mimic mdWrap in using separate binData/xmlData sections;
4. Copyright statement added;
5. Allow both FLocat and Fcontent in single file element;
6. Allow behaviorSec elements to group through GROUPID attribute;
7. allow descriptive and administrative metadata sections to be grouped through GROUPID attribute;
8. allow <file> element to point to descriptive metadata via DMDID attribute;
9. allow descriptive metadata and all forms of administrative metadata to point to administrative metadata via ADMID attribute;
10. CREATED and STATUS attributes added to all desc. and adm. metadata sections; and
11. clean up documentation in elements to reflect reality.