The [ok-mdx](https://github.com/jxnblk/mdx-go) library gives users access to the `mdx` command-line tool. The lesson shows users how to leverage the `mdx` command to fire up a local development server where we can write markdown using the MDX syntax and see it immediately come to life within our page. By the end of the lesson we will have leveraged `ok-mdx` to prototype and document a user interface component created with the `@emotion/styled` library. #### Links * [MDX Homepage](https://mdxjs.com) * [ok-mdx](https://github.com/jxnblk/ok-mdx) * [@emotion/styled docs](https://emotion.sh/docs/styled)