This page collects informative reference material - the package registry, discussion pointers, and a comparison with related work. The normative IANA / media-type considerations, security considerations, and the bibliography are in the Specification.
Custom schema language focussed on data modelling. Both importers and exporters to JSON Schema (and others) exists. Custom annotations for UI generation not (yet) supported (see #1618).
CDIF is a set of implementation recommendations, based on profiles of common, domain-neutral metadata standards which are aligned to work together to support core functions required by FAIR.