Advanced User Guide
This page outlines some advanced actions that can be performed on Alto Catalog.
A media rel (sort for “relevance”) is an indication as to how a media item relates to a particular catalog item.
A media item is a reference to a bunch of bytes stored in a repository. Such media items would be things like audio files or album artwork. How this media item relates to a catalog item (i.e. album or track) is specified by the “rel”.
There is a predefined list of “rels” that are