What is it?
Tracker has a limited capability to write metadata back into the data resource. In case of a file that means writing it back into the file. For example writing some of the metadata the user sets using a SPARQL Update back into an MP3 file as ID3 tags.
Which ones do we support already?
Right now the write back capability is under development and only supports a bunch of fields for a few XMP formats (JPEG, PNG and TIFF) and the Title of MP3 files. In near future we will start supporting increasingly more fields.
For people who want to write support for their properties and file formats, read the documentation.
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