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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.
This problem seems slightly underspecified in that it isn't clear whether or not to preserve existing camel casing.
For example, it isn't clear from the description whether 'foo-barBaz-qux' should be 'fooBarBazQux' or 'fooBarbazQux'
It looks like this might be a typo due to font rendering?
The extra character is supposed to be an underscore, but you seem to be adding a hyphen.