Hidden Tags

Is there an easy way to configure mp3tag to display tags in the columns that are not yet specified?

Scenario: someone has 1000x of tracks and is just now looking at the tags as part of a cleanup effort. In mp3tag, you can view the extended tag to see all of the available tags for a single track... but how do you do it for all of them (assuming that there are all types of tags spread out over the library)?

Thanks

If you select all files and open the extended tag window, you will see all types of fields that your files contain.