it would be good to clarify this requirement also in the [common principles](https://bids-specification.readthedocs.io/en/stable/02-common-principles.html) _Originally posted by @robertoostenveld in https://github.com/bids-standard/bids-specification/pull/820#r685768236_
it would be good to clarify this requirement also in the common principles
Originally posted by @robertoostenveld in #820 (comment)