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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.
Because the specs say so. Arguments start at
0
, number of squares starts at1
- there's your+ 1
.The specs could easily have said something different ( and arguably more sensible ), but they don't.