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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.
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Just speaking personally I'd appreciate it if there're themes other than the dark one. It looks nice but could be burdensome for my eyes when staring at for too long.
should null string ('') be considered?