XMP provides a standard format for creating, processing,
and exchanging metadata for a wide variety of applications. XMP
provides a model by which metadata is represented. XMP metadata
is encoded as XML-formatted text that uses the W3C standard Resource
Description Language (RDF).
In XMP, metadata consists of a set of properties that are associated
with a document. Metadata includes properties such as the author,
title, and modification date of a document.
Properties can sometimes be associated with components of a document,
but the XMP Utilities service does not provide the ability to manipulate
component metadata.
Properties have names and values:
Names must be legal XML names.
Values may be simple values, such as numbers and strings,
or arrays (also called containers). All values are actually
represented as Unicode strings.
For more information about XMP, see the
main XMP page on the Adobe website.
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