https://mpeg.chiariglione.org/standards/mpeg-21/rights-expression-language.html
Rights Expression Language | MPEG
MPEG-21 Rights Expression Language MPEG doc#: N7427Date: July 2005Author: 1 IntroductionA Rights Expression Language (REL) is a machine-readable language that...
rights expression languagempeg
https://lists.w3.org/Archives/Public/www-archive/2008Aug/0038.html
Re: [whatwg] Creative Commons Rights Expression Language from Ben Adida on 2008-08-22...