In the HB listing for MD 279, there is a waypoint marked "MD 286". The waypoint is mislabeled, as that's the north terminus of MD 268. The pointer is correct -- the pointer itself is called MD 268 and goes to the MD 268 file -- it's just the name of the waypoint that's incorrect.
(And now I am being bombarded with memories of programming language design classes in senior year and gradskool. What the thing is, what the thing is called, what the name of the thing is, what the name is called, how these can all differ...)