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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.
Looks like V8 made some changes and it no longer works (Chrome/Node.js).
But it still works in Firefox
Does it work though? Doesn't in my browser, none of the answers do. I need to use negative 1 to reverse it