The work on Korean toponymy is recent enough (and still ongoing) that it is missing in many older standard references for the history of Japanese. So, in a disc

The work on Korean toponymy is recent enough (and still ongoing) that it is missing in many older standard references for the history of Japanese. So, in a discussion like this, if a person mentions that the Japonic family is a language isolate, then it is helpful to add for readers less familiar with this subject that it isn’t completely isolated.