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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.
The additional complexity is to avoid the cost of branching in the loop, but it costs 128 chars of memory on startup as the tradeoff shrug