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In a TEI digital edition, various metadata, background information, and declarations of particular usages are included in a teiHeader element that precedes the text element of the document. The level of detail in the markup may vary justifiably according to the purposes of the edition and the time available. TEI allows a vast range of possibilities for markup, but each project is entitled to use whatever subset seems most appropriate. National Endowment for the Humanities in relation to its support of digital projects in the humanities.
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TEI has been and is being used in a number of projects (for example, EPIDOC) and is looked upon with favor by the U.S. The version of the TEI structure that has been adopted for this edition is known as P5. TEI originated with the precursor to XML, SGML (Standard Generalized Markup Language), but in recent years TEI definitions have been rewritten in XML. TEI is the acronym of the Text Encoding Initiative, a non-profit project providing a standard for sophisticated markup of complex textual documents.
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This allows for the use of polytonic Greek as well as roman characters, plus metrical and other symbols in the edition. XML documents are encoded in Unicode, the international standard for encoding the world’s various language scripts and other systems of symbols.
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XML (eXtensible Markup Language) is an international standard for markup, allowing the creation of computer data structures that are easily reprocessed and do not depend on particular operating systems or applications. The base form of the digital edition of the scholia is an XML document. Appendix: The XML Structure and Technical Details XML and TEI
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