`Front Matter` ↔ YAML Metadata header for MD set by `---` wrapper - front section of book/md.

Source: mdxjs.com/guides/frontmatter/

---
id: _doc_id
title: _page_title
wasd: wsdgkjdfglk
---

MDX is based off CommonMark which does not support Front Matter by default - does not parse YAML-based metadata - requires installing extra plugin remark-frontmatter || remark-mdx-frontmatter

Front Matter ↔ YAML Metadata header for MD set by --- wrapper - front section of book/md.

References​

`Front Matter` ↔ YAML Metadata header for MD set by `---` wrapper - front section of book/md.

References