Markdown

You can add rich-text to the editor, but also by using markdown.
Markdown is a popular markup syntax that's widely known for its simplicity and popularity on the Web. GitBook supports it as a keyboard-friendly way to write rich and structured text.
​ Tips: You can learn more about Markdown itself, by visiting http://commonmark.org/help/. 
If you find a feature of Markdown that is not supported by GitBook, please open a feature request on Canny.  
​ Text formatting
We support all the classic inline Markdown formatting:
Formatting
Markdown version
Result
Bold
**bold**
text
Italic
_italic_
italic
Strikethrough
~strikethrough~
strikethrough
​ Titles
Heading 1: # A first-level title
Heading 2: ## A second-level title
Heading 3: ### A third-level title
​ Code blocks
```⏎ creates a new code block.
```py⏎ creates a new code block with Python syntax highlighting.
​ Lists
We automatically detect ordered and un-ordered lists as you type. 
Begin a line with -  or *  to start a bullet list. 
Being a line with 1.  to start a numbered list. Use Tab to go one level deeper, and Shift+Tab to go up.
Begin a line with - [ ]  to start a task list.
​ Quotes
Begin a line with >  to create a block quote.
​Hints and Callouts
Hints can simply be inserted from the UI by clicking on the control palette. You can also add them in markdown if you sync a Github repo.
When running the GitHub syntax in the markdown file, you can write:
{% hint style="info" %}
Hello world
{% endhint %}
​ Tips: "styles" translate to the different hint types : info, success, danger & warning.