Frontmatter Merging

You can provide frontmatter instructions from both your main entry and external markdown pages. If there are duplicate keys in them, the ones from the main entry have the higher priority. For example:

./slides.md

---
src: ./cover.md
background: https://sli.dev/bar.png
class: text-center
---

./cover.md

---
layout: cover
background: https://sli.dev/foo.png
---

# Cover

Cover Page

They will end up being equivalent to the following page:

---
layout: cover
background: https://sli.dev/bar.png
class: text-center
---

# Cover

Cover Page