From Fairies and How to Avoid Them by Miss Perspicacia Tick: No one knows exactly how the Nac Mac Feegle step from one world to another. Those who have seen Feegles actually travel this way say that they apparently throw back their shoulders and thrust out one leg straight ahead of them. Then they wiggle their foot and are gone. This is known as “the crawstep,” and the only comment on the subject by a Feegle is “It’s all in the ankle movement, ye ken.” They appear to be able to travel magically between worlds of all kinds but not within a world. For this purpose, they assure people, they have
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