Dryad is a curated general-purpose repository that makes data discoverable, freely reusable, and citable. "Nature Precedings" functioned as a permanent, citable archive for pre-publication research and preliminary findings. Failure to comply with speed limits and overhead instructions are citable offences. These currently have no citable real-world examples outside of fiction. Another important difference is the definition of the "number of publications" or "citable items".