Dashicons, the WordPress admin icon font. For the official documentation, please refer to the according WordPress Developer Resource.
For new icon requests, please create a new issue on this GitHub repository. If you'd like to work an an icon request, check out our WIP Dashicons style guide.
For any bugs that appear within WordPress core, please create a new ticket on WordPress Trac. Use the "Administration" component and the "ui" focus when creating the new ticket, and be sure to include "Dashicons" somewhere in the text of the ticket.
Dashicons is licensed under GPLv2, or any later version with font exception.