Approximately half of these cross-border titles include only a very small part of land in one country with the vast majority of the land located in the other (perhaps due to mapping tolerances).
Yng nghyswllt tua hanner y teitlau trawsffiniol hyn, dim ond darn bach iawn o dir sydd yn un wlad, gyda’r mwyafrif helaeth o'r tir wedi’i leoli yn y wlad arall (efallai oherwydd goddefiannau mapio).