Web Concepts is growing again! RFC 7540 establishes the Hypertext Transfer Protocol version 2 (HTTP/2) Parameter Registry. The RFC identifies three concepts (Frame Type, Settings, and Error Codes), but for now only the frame type appears as a Web concept.

Therefore, the newest addition to the growing collection of webconcepts.info concepts are HTTP/2 Frame Types (which takes the total count of concepts to 33). As usual, webconcepts.info is not supposed to only reflect the official IANA registry, meaning that any other useful value should and will be added as well.