This got me thinking what the difference is between the backroll and the backloop. Looking around YouTube the two terms seem to be molded in to one but I found a glossary for kite stuff on kitsurfingshcool.org and they say that it's a back loop if your board goes above your head. It's called a backroll of your feet do not go above your head. Just thought I'd add this as a FYI. If anyone knows a more official defenition for these two trick post it up

Aspect Ratio, AR: the ratio of a kites width to height (span to chord). Kites can range between a high aspect ratio of about 5.0 or a low aspect ratio of about 3.0.
AR5: The legendary first 4 line inflatable kite manufactured by Naish.
ARC: a foil kite manufactured by Peter Lynn
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Back Loop: a kitesurfing trick where the kiter rotates backward (begins by turning their back toward the kite) while throwing his/her feet above the level of his/her head.
Back Roll: same as a back loop but without getting their feet up high.
Batten: a length of carbon or plastic which adds stiffness or shape to the kite or sail.
Bear Away / Bear Off: change your direction of travel to a more downwind direction.
Beaufort: scale of wind strengths from 0 to 12. Named after the English Admiral, Francis Beaufort, who invented it. 0 = no wind whereas 12 = hurricane.