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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.
No worries -- I've make this bug myself in production code, where hackers love to exploit small issues like this. Just trying to warn others...
Thank you for your comment. This is true.
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I spent an hour on this and wrote 43 lines of code, but maybe just five. FIVE LINE, CARL!