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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.
It's certainly not the clearest, especially the part about the "initial value". It makes sense in the context of a sum, but what about a GCF or LCD? What's an initial value got to do with a max or min?