The _markers suffix for MEG data is present in Appendix VI and the Entity Table, but there is no definition for it anywhere, as far as I can tell. @bids-standard/raw-electrophys-meg does anyone know what this suffix refers to and can we define it in the main text?

Stems from #610:

What are MEG _markers files? They're in the schema but I don't know where they came from.

😲 did you find a spot in the spec that yields more information?

I just found this in https://bids-specification.readthedocs.io/en/latest/99-appendices/06-meg-file-formats.html#kityokogawaricoh

Seems like a badly defined suffix ... reminiscent of the part -> split situation we had a while ago, where an MEG suffix was only defined in an appendix.

Originally posted by @sappelhoff in #610 (comment)