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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.
Strictly speaking, invalid input should lead to an error. We can't assume that 2 an >3 spaces equals to 3 spaces.
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Usually, it's not a very good practice to change input var, so I dont think you should push to signature.