Cassette is a small, Lisp-like programming language. It looks like this: import List import Math import Canvas import System let width = 800, height = 480, canvas = Canvas.new(width, height) canvas.text("Lines!", {200, 2}) System.seed(System.time()) def rand-line(i) do let x0 = Math.floor(i * width / 100), y0 = Math.rand-int(20, height / 10), x1 = Math.rand-int(0, width), y1 = Math.rand-int(20, he