| Definitions Main Page | |
| Index --> All Levels | Basic and Mainstream | Plus | A1 | A2 | C1 | C2 | C3A | C3B | C4 | NOL | Def2 |
| Definitions (Text Only) --> Plus | A1 | A2 | C1 | C2 | C3A | C3B | C4 | NOL | |
| Dancing and Studying Hints | Tagging Calls | Calls with Parts | Shape Changing | Types of Distortions |
| Cycle & Wheel [A1] (Ron Schneider and Dick Bayer 1975) |
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Mainstream definition:
Challenge definition:
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