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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 of
call PbZ9l_m4S$aTW8jy9eHsKxBTp9p3h '5'. The EBNF defines that arguments tocallmust be variable names, yet here it is passing a char, which is invalid.