What Icon fonts are included in v8 CMS?

Which fontsets are included in v8 and how do you invoke their use?

These two font libraries host more than 600 icons that can be used on your CMS website:

Font Awesome:
Example: <i class="fa fa-pagelines"></i>  

Glyphicons Halflings:
Example: <i class="glyphicon glyphicon-leaf"></i> 

Need more info?

This documentation page has been extracted from the Q&A section where you can discuss it and get feedback.
Related question