# Chapter 3 Documents

The very original version of Markdown was invented mainly to write HTML content more easily. For example, you can write a bullet with - text instead of the verbose HTML code <ul><li>text</li></ul>, or a quote with > text instead of <blockquote>text</blockquote>.

The syntax of Markdown has been greatly extended by Pandoc. What is more, Pandoc makes it possible to convert a Markdown document to a large variety of output formats. In this chapter, we will introduce the features of various document output formats. In the next two chapters, we will document the presentation formats and other R Markdown extensions, respectively.