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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.
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merely for logging purpose
It has no significance kata-wise. OP probably thought the kata was way too easy (which is true) and wanted to add some extra sauce.
what is the reason of having that message printed?