Hey and thanks for the response! This link might better describe the glideslope concept: http://en.m.wikipedia.org/wiki/Instrument_landing_system The red plane shows the glideslope. In its absolutely easiest form the following concept would help when descending to land: the waypoint is the anchor point for a configurable glideslope angle (this could be a setting that us general and not waypoint specific; toggle on/off and glideslope angle), if enabled, a text indication shows the nominal altitude (and/or the difference between actual and nominal altitude) that corresponds with the lateral distance to the waypoint and the configured glideslope angle. It would be a relatively simple trigonometric calculation. That should do the trick and help out in establishing a controlled descent towards any arbitrary waypoint, near or far. In a more fancy version, a graphical interface could depict the difference between actual and nominal altitude, and, to make it even more fancy, an inbound heading could be configured for the waypoint to allow for lateral guidance (as shown by the green plane in the link above). Thanks for considering! I'm happy with even the simplest type of help, or anything at all, your mod is already useful as is! :-) - - - Updated - - - Following up myself (it's a bit of a pain to write on the phone)... An even simpler implementation could be to simply indicate the angle from your current position/altitude to the waypoint position/altitude. Angle must be based on lateral distance. That way, nothing to configure even; arctan(altitude difference/lateral distance), possibly signed to indicate downward or upward slope. Text would be absolutely fine. Thanks again,