The contents of this file: purl-spec/PURL-SPECIFICATION.rst have been moved to markdown files in purl-spec/docs/.
The primary documentation for the PURL specification is at: https://www.packageurl.org/docs/purl/introduction
See also the Package-URL Specification 1st Edition standard at: https://ecma-international.org/publications-and-standards/standards/ecma-427/.