There are two ways to adjust the size of your screen in DISCO.
Adjust viewer screen size
To adjust the auto-zoom while viewing a document, click on the Automatic Zoom select bar, found in the upper right corner of the viewer.
Adjust zoom using your keyboard
To adjust your screen size anywhere within the DISCO app, use the following keyboard shortcut:
Windows: "CNTRL" and "+" = larger; "CNTRL" and "-" = smaller
Mac: "Command" and "+" = larger; "Command" and "-" = smaller