How To Make A Line Bold R Markdown

R Programming

When working with R Markdown, I often find myself wanting to emphasize certain lines of text by making them bold. Fortunately, R Markdown provides an easy way to achieve this using a simple formatting syntax. In this article, I’ll walk you through the steps to make a line bold in R Markdown and share some personal tips along the way.

Understanding the Basics

In R Markdown, we can make a line bold by using a combination of asterisks (*) or underscores (_). To make a line bold, all we need to do is wrap the text with two asterisks or underscores on each side. This simple syntax tells R Markdown to render the text in bold format.

Using Asterisks (*)

To bold a line using asterisks, simply enclose the text within two asterisks on each side. For example:

**This line will be bold**

Using Underscores (_)

Similarly, we can use underscores to achieve the same result. Here’s an example:

__This line will also be bold__

It’s worth noting that the choice between asterisks and underscores is a matter of personal preference. Both methods produce the same bold effect, so feel free to use whichever style you find more intuitive or visually appealing.

Applying Bold Formatting

Now that we understand the syntax, let’s put it into practice. Within your R Markdown document, simply identify the text you want to make bold and encapsulate it with the chosen bolding syntax. This simple step instantly transforms the text into bold format when the document is rendered.

For example, suppose I want to emphasize the following line:

This is an important point.

To make it bold, I would modify the line as follows:

**This is an important point.**

When the R Markdown document is knitted or rendered, the modified line will stand out in bold, drawing attention to its significance.

Personal Touch

In my own experience, leveraging bold formatting in R Markdown has been incredibly useful for drawing attention to key insights, important reminders, or section headers within my documents. The ability to easily format text in this way enhances the readability and impact of the content, making it more engaging for readers.

As I continue to refine my R Markdown skills, I find that the use of bold text adds a professional touch to my reports, presentations, and analyses. It’s a small detail that can make a big difference in effectively conveying information and guiding the reader’s focus.


Mastering the art of making a line bold in R Markdown is a valuable skill that can enhance the visual appeal and communicative power of your documents. By understanding the simple syntax and applying it strategically, you can effectively emphasize key points and improve the overall clarity of your content. Whether you prefer asterisks or underscores, the ability to wield bold text adds a touch of professionalism to your work and elevates the impact of your message.