Last flight in 7CC I experimented with AFCS track hold/select mode. It seems to work well but is not selectable from the GMC 305 or the earlier fit GMC 307. Track mode is selectable from the GDU 465 AFCS GUI.
Perhaps another reason to want a GMC 507 instead of the, now standard, GMC 305.
It's fun to fly what is essentially a very basic Super Cub and to play with modern avionics at the same time.