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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Thx for your input, I had fixed both of them.
Alas, unMaybe, unEither used to be purely explanational (just write down why the given perfect code work, or why unEither is impossible, in the comment). However more than half of the people just completely ignore it. I guess some people just like internet points more than learning stuff.