The differences between attested Proto-Norse and unattested Proto-Germanic are rather small. Separating Proto-Norse from Northwest Germanic can be said to be a matter of convention, as sufficient evidence from the remaining parts of the Germanic-speaking area (Northern Germany and the Netherlands) is lacking in a degree to provide sufficient comparison. Inscriptions found in Scandinavia are considered to be in Proto-Norse. Several scholars argue about this subject matter. Wolfgang von Krause sees the language of the runic inscriptions of the Proto-Norse period as an immediate precursor to Old Norse, but Elmer Antonsen views them as Northwest Germanic.