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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.
Hello from the future :D
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Heh, good point. It was a while ago when I wrote this now, but I'd guess at the time I introduced the constants after writing those cases and then totally forgot to go clean up after myself ;)
Good idea with defining constants for direction. Pity you didn't use them for <>^v commands ;)