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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'm sorry, but I think it can not be an issue, because length limit is a rule of my 'shortest code' series, I write "This is the challenge version of coding 3min series. If you feel difficult, please complete the simple version" in the kata's description(first line), so you can try it with simple version.