BIDS Extension Proposal 22 (BEP022): Magnetic Resonance Spectroscopy (MRS) was announced awhile back by Dickson Wong (couldn't find github handle). I thought to add it to the registry of existing BEPs within this repo but found that BEP022 was already taken for "PET Preprocessing derivatives". Conflict was already identified by Roeland Hancock and confirmed by @filo but not reported here.