This page describes how we use Markdown to write documentation on MDN Web Docs. We have chosen GitHub-Flavored Markdown (GFM) as a baseline, and added some extensions to support some of the things we need to do on MDN that aren't readily supported in GFM....com/mdn/yari/pull/7017 Notes, warnings, and callouts Writers...types of alerts: notes, warnings, and callouts. Note: MDN Web Docs...