Then use the windows explorer.
If you want to know the tag type, though, then create yourself a column with the value "%_tag_read%[ (%_tag%)]"
This would give you information about the tags - as this would be much more interesting within mp3tag.
Also, the list of file extensions which filters the files in the options is fairly close to the abilities of mp3tag. So why do want to see a DOC-file in MP3tag.