In the case you don't have it you nevertheless can run the demo by executing the files in following 10 order:
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1. # run"clear > 2. # run"a1 > 3. # run"a2 > 4. # run"a3 > 5. # run"b1 > 6. # run"b2 > 7. # run"b3 > 8. # run"c1 > 9. # run"c2 > 10. # run"c3 >11. # run"robo)