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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.
A better description with a worked example would be nice. I had to read the comments to find out what to do because the description didn't make sense to me
yeah, I noticed, but still submitted.
IMHO, there is no need for that; since you passed the kata have a look at other solutions.