SeanCG,...
no they definitely mean a 360 ---takeoff ends at 50' agl so the mean departure climb,...and many runways are off of virtual cliffs,..since the airplane flying handbook,..I have it [both of them
],..borrows [steals] from many sources,...such as handling the big jets or aerodynamics for naval aviators,...sometimes the wording gets ambiguous,...but one of the best references available for non-engineer pilots
P.S. I only quoted the part of the sentence I needed
but an inquisitive nature such as yours is good in this business ---just be careful brother!!!
PA