How to make bold text in Markdown?

Markdown provides two ways of making something bold. You have to type two asterisks or underscores before and after the text that you want to bold.

For compatibility, it is recommended that you use asterisks instead of underscores for text bold.

Markdown HTML Output
This is a **bold text.** This is a <strong>bold text.</strong>
This is also a __bold text.__ This is also a <strong>bold text.</strong>