There are a number of common user interface elements throughout r-evolution.
The first is the navigation bar that sits at the bottom of r-evolution. The button will take you to the r-evolution home page, the icon will take you to your notification hub, and the icon will take you to The Plate.
Next is the action bar. It appears at the top of r-evolution, and is customized for each module. Below is the r mail action bar. Add new content or search with the icons to the right, and access the Options menu by pressing the icon on the left, or the sort menu by pressing the icon.
Below the action bar is the Context bar. It allows you to choose what data you see in the Content view.
At the center of every r-evolution page is the content view, which displays your lists, conversations, previews, etc.