aoqi@0: escape is function with arity 1
aoqi@0: unescape is function with arity 1
aoqi@0: This%20is%20great%21
aoqi@0: What%20is%20going%20on%20here%3F%3F
aoqi@0: %uFFFF%uFFFE%u1FFF
aoqi@0: This is great!
aoqi@0: What is going on here??