The ribbon is the horizontal area of the application window that contains task-based tabs and panels with tools for viewing, marking up, and sharing DWF files.
Design Review contains one contextual tab and one contextual panel. By default, the Animation tab is hidden. However, when a sheet containing an animation is shown on the canvas, this context causes the Animation tab to be shown. The Animation tab provides access to tools used to control how an animation is played.

The Animation tab is shown only when viewing an animation
Like the Animation tab, by default, the File panel is hidden by default. When a Design Review file is embedded, this context causes the File panel to be shown on the Home tab. The File panel provides access to tools typically available on the application button and toolbar, which are unavailable in embedded mode. You can also show the File panel manually.

The File panel is shown on the Home tab only when viewing an embedded DWF file
In the middle of a panel to the right of a title, an arrow icon,
, indicates that the panel can slide out to display additional tools and controls. Click the title bar of an open panel to display the slideout panel. By default, a slideout panel automatically closes when you click another panel. To keep a panel expanded, click the push pin icon,
, in the bottom-left corner of the slideout panel.
To hide or show a ribbon panel
To show or hide ribbon panel titles
The dialog box opens.
The program window, ribbon, toolbars, and palettes are shown in their previous locations.