It is possible to create 'CUESHEET' tag using the tag editor.
Which could be useful to embed a cuesheet in a file.
But when pasting a cuesheet into the value field, it will only except the first line of the cuesheet and everything else is ignored.
Can it be changed so that it accepts the whole cuesheet?
I also noticed that there is a difference between the name of the cuesheet tag of a (flac) file that already contains an embedded cuesheet, and one that you create yourself.
The former has FILECUESHEET, the latter CUESHEET.
Not sure if that's important but I thought to mention it.