---
author: canory
date: 2023-04-04T16:45:52Z
tags: [feeds]
feed:
  description: "Recently published RFCs"
  domain: "www.rfc-editor.org"
  enclosure: ""
  favicon: "/data/media/favicon.httpswwwrfc-editororgrfcrssxml.png"
  home: ""
  link: "https://www.rfc-editor.org/info/rfc9402"
  name: "Recent RFCs"
  source: "https://www.rfc-editor.org/rfcrss.xml"
---

This document defines the Concat notation: a text-based language used to describe pictures and videos whose subject includes cats,