All icons are included in the static/icons.svg SVG sprite. To include an icon, you could either:
simply use the @a-icon atom or copy and paste the markup below
For the former, make sure you replace the identifier menu_home (the word just after the #) with the desired icon name chosen from the list below and the Accueil with the wanted title
Example:
Here is the full rendered markup for the timeline icon:
<svg class="a-icon" title="Accueil" role="img">
<use xlink:href="#home" />
</svg>