Following are different uses of metadata:
- document metadata – the <metadata> element acts as a container for the properties of the content. The fields (properties) can be used to store information specific to a project or they could reflect the content of fields. A use case for this might be to allow searching or editing fields on .jpg image or .mp3 audio file format. For further information see this tutorial.
- Universal Metadata Format – the same information as the
<documentinfo>element in the Universal format packaging.
Metadata may also be used to refer to information about the document or fragment that is usually derived or system information about of the document or fragment:
- document info – see the
<documentinfo>element acts as a wrapper for a number of document-level metadata fields such as versions and reverse cross references
- fragment info – see the
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