Original sentence: The Jackson patented version uses a unique type of latch and a specially hidden support.The anti-gravity lean technique was filed under United States patent law by Jackson in 1993, and consisted of the dancers wearing special shoes which could be locked down onto clips attached to the stage.The trick is over a century old, originating in Vaudeville shows, where it was known as simply "the lean".This allowed the performer to lean beyond their own center of gravity
Edited sentence: The Jackson patented version uses a unique type of latch and a cleverly hidden support.The anti-gravity lean technique was filed under United States patent law by Jackson in 1993, and consisted of the dancers wearing special shoes which could be locked down onto clips attached to the stage, allowing the performer to lean beyond their own centre of gravity.The trick is over a century old, originating in Vaudeville shows, where it was known as simply The Lean