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ref: 32c371b1d3bf5650fa77ada4bc15be6bcce9ea59 parent: 4398dde1e483d74ae9997aba11f62b9810f9f77b author: dannye <33dannye@gmail.com> date: Sun Mar 18 20:18:50 EDT 2018
sfxnote parameter 1 is length, not duty also bumb submodule