will create an example named check-3-items with the heading Check 3 items. Introduction. Now, install the npm module, marked, which is a markdown parser library. An Rmd file appears with front matter and some sample text. text in this directory. CSS is perfect for mobile apps. For this class, you will work in R markdown files, which can contain text, R code, and R output (such as figures). tex --- This also assumes that footer. MultiMarkdown separates a document’s content from its structure and formatting. Lastly, the video demonstrates how to produce dynamic documents from R Markdown using RStudio.