I am sure it is written in American...surely it isn't in English....for there aren't any mountains in Britain! Foothills maybe...knolls...knobs....yea even a bluff...but mountains.....nah! So why would the article be slanted towards the English...afterall it is in fact an American magazine....Rotor and Wing. We on the far side of the pond try to make things meet the reality test when dealing with aviation and not see how complex and esoteric we can make it. Ever done a plotting exam for a CAA ATPL? Apply that to your everyday tasking as a pilot.