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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.
0x means the numbers that follow will be in hexadecimal format so for example 0x01 would be 1, 0x0A (letters are used because there are no more digits) is 10, 0x0F is 15, so 0x20 is 32. An upper case letter is 32 places less than its uppercase counterpart.