It is also possible to store a comment with your backup.

This is particularly handy if you have a special reason for making a backup. The comment is stored as metadata with the backup so that even if you import the backup later the comment will still be there.

You add the comment from the Backup Archive.

Backup Archive - Add Notes

You can type the notes in most native languages as it does understand unicode.

Backup Archive - Notes for the VM

Type your notes and press “Done” when finished.

(My apologies for my Thai friends for my broken Thai in the screenshot)