With BlackBerry 10 there are a lot of design changes in place over the previous BlackBerry OS iterations. As such, there is a whole new set of icons and visuals styles that will be used. To keep things in sync visually, there is a set of UI guidelines that developers should follow when creating apps. To help make that happen, the BlackBerry UX design team has now shared the action icons used throughout BlackBerry 10 for developer use. If you're building an app, you'll want to have these handy in case you need to implement them.