Terminology
Created by: mathias-goebel
e.g. http://iiif.io/api/image/2.1/#terminology
https://www.ietf.org/rfc/rfc2119.txt
https://tools.ietf.org/html/rfc2119
The key words must, must not, required, shall, shall not, should, should not, recommended, and optional in this document are to be interpreted as described in RFC 2119.
Edited by Stefan Hynek