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Reference: createImage

createImage(expr, var, set) creates the image of the set set under the function expr of the variable var.

Examples: spiral ≔ createImage("❨FresnelC(t), FresnelS(t)❩", "t", [-10, 10, 0.01])
          drawLines("spiral")

          spiral ≔ createImage("❨3⋅cos(t), 3⋅sin(t), t/2, hsv(10⋅t, 1, 1)❩", "t", [-30, 30, 0.01])
          drawColouredLines3("spiral")

          createImage("2⋅x", "x", {"test", 10, ❨1, 2❩}) = {"testtest", 20, ❨2, 4❩}