"front matter" that provides metadata about the page... for example:
---
title: ""
date: 2019-08-17T15:50:53Z
draft: true
---
Supported formats are: - TOML, wrapped by +++
- YAML, wrapped by ---
- JSON, as a single object {...}
Useful keys are: - categories
- description
- slug
(served page path) - tags
- type
(NOTE: some themes require the correct type, e.g: terminal requires "posts") - author