The sailplane tag description needs to be revised-- it works fine as a general description of a sailplane, but it is confusing as an ASE tag, since we also have the tag "glider". The tag description should clarify that the concept of a "sailplane" is a subset of the concept of a "glider".
Current tag description--
A glider or sailplane is a type of glider aircraft used in the sport of gliding.It has rigid wings and an undercarriage. Some gliders, known as motor gliders, are also used for gliding and soaring, but have engines which can be used for extending a flight and, for some types, for take-off.
New tag should description should read something like (and this isn't intended to be the exact final wording) --
A sailplane is a kind of glider, with conventional aerodynamic control surfaces, intended to be able to soar.
Actually I'm still learning how to edit tags-- I went ahead and made the edit and it is in the review queue. If it does not pass, I will modify this question to so indicate that the change is still needed.
The edit was approved, but I am still suggesting a slight modification-- now done