Icons - academies-trust/less-framework GitHub Wiki
Details of all available icons are available here: https://www.google.com/design/icons/
The framework uses Google's material design icons. For instructions on how to use these, please see the documentation here: http://google.github.io/material-design-icons/#using-the-icons-in-html
An example is
<i class="material-icons">warning</i>
This will produce the warning icon. However, IE9 and below require the character code rather than the name, such as
<i class="material-icons"></i>