Full Screen
...
dialog
Upon clicking on the Fullscreen button on a design, a dialog will open in which you can see the Figma design in full screen with an interactive viewer. In addition this dialog contains a sidebar with 3 tabs, a select design dropdown and a zoom option.
...
In the full screen dialog, you can view designs with an interactive viewer that allows you to drag the design and zoom to get a better view of a particular design. You can either zoom using the buttons in the top center of the dialog or by pressing Ctrl/Cmd button while using the scroll wheel/motion gesture on your mouse.