---
title: "YAML metadata for R Markdown with examples"
subtitle: "YAML header"
author: Hao Liang
date: "2021-06-10"
output:
  md_document:
    toc: yes
    toc_depth: 2
abstract: YAML is a human-readable and easy to write language to define data structures.
keywords: ["YAML", "Rmd"]
subject: Medicine
description: Rmd makes it possible to use a YAML header to specify certain parameters right at the beginning of the document.
category: 
 - Rmd
 - Medicine
lang: "en-US" 
---

Example taken from https://github.com/hao203/rmarkdown-YAML