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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.
I thought the same, but at the same time... what could it change? why to assign a variable when it is not gonna be used? right?.. and the thing about "return" I forget that it will give you a true or false.. amazing!