Font Size
The Font Size used for the Info Viewer can be selected using the Info Viewer Font Size option in the View menu.
The font size and style used in the Chart Views (Ground Reaction, Histogram, Cumulative, Scatter) can be customized in the Display Options dialog, under the Plot Views tab.
The font size and style used for the Project Info Textbox displayed in the Tunnel Section View, can be customized in the Project Info Settings dialog (select View > Tunnel Section > Project Info Settings, or right-click on the Project Info Textbox).