att.internetMedia provides attributes for specifying the type of a computer resource using a standard taxonomy.
Moduletei — The TEI Infrastructure [binaryObject graphic] equiv ptr ref
mimeType(MIME media type) specifies the applicable multimedia internet mail extension (MIME) media type
Status Optional
Datatype 1–∞ occurrences of 

<rng:ref name="data.word"/>
separated by whitespace

In this example mimeType is used to indicate that the URL points to a TEI XML file encoded in UTF-8.

<ref mimeType="application/tei+xml; charset=UTF-8"

This attribute class provides an attribute for describing a computer resource, typically available over the internet, using a value taken from a standard taxonomy. At present only a single taxonomy is supported, the Multipurpose Internet Mail Extensions (MIME) Media Type system. This typology of media types is defined by the Internet Engineering Task Force in RFC 2046. The list of types is maintained by the Internet Assigned Numbers Authority (IANA). The mimeType attribute must have a value taken from this list.