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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.
Hint: you cannot copy a list by typing list2 = list1, because list2 will only be a reference to list1
Took me a while to figure it out, but a very valuable lesson