I don't think MP3Tag should explain MKV tagging specifications either
However, since that page is intended for the MP3Tag user to map MP3Tag fields for various types of files, I was suggesting that it might be a little more targeted or focused towards helping the user use MP3tag to map data to the correct destination field
For example.
Specifically using TALB in ID3.v2.4 instead of ditto to set the MP3Tag ALBUM field (formatting)
Using the MP3Tag ALBUM field to set the MKV TITLE (T50 IMHO doesn't add anything, but could be confusing [like to me])). Maybe adding a link to
What does MP3Tag field ALBUMARTISTSORT map to for MKV files? It just says T=30. Does that mean it will create a field called ALBUMARTISTSORT in the MKV file if it's not there?