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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.
Then they're not identical. Did you read responses to those comments?
Agree with other commnentary - use cases are identical to responses from scripts, but all failing.