1) The document provides guidance on assigning Digital Object Identifiers (DOIs) through DataCite. It discusses decisions that must be made, such as what objects to assign DOIs to and DOI construction.
2) Maintaining DOIs requires ensuring a correct URL and metadata for the object. DOIs also commit an institution to long-term storage of the object for a minimum of 10 years.
3) The quality of the DOI system relies on objects being cite-worthy, having well described metadata, and the institution committing to long-term storage. Metadata must be provided in an XML file and displayed on a landing page.