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      "title": {"text": "Parametic equations"},
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         "title": {"text": "x(t)"},
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         "max": "1.5",
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         "title": {"text": "y(t)"},
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         "max": "2",
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            "max": "1",
            "number": "3"
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         "title": {
            "text": "x = sin(3t)cos(t), y = sin(3t)sin(t)", 
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      "arrows": ["arrow1", "arrow2"],
      "arrow1": {
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      "labels": ["label1"],
      "label1": {
         "title": {"text": "$t \\in [0, 2\\pi)$"},
         "position": "-0.8,1.33"
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      "box1": {
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