fontSize
Type: Real
Availability: Read or write at any time
The fontSize property of the Application class determines the default font size used for controls in the application when the fontName property for a control on a form is set to Default. (See also the Application class fontBold and fontName properties.)
Any changes made to the application font attributes at run time are not permanent and affect only the current instance of the application. The application font also defines the default font for graphics text drawing methods.
The default value for the fontSize property is 8.25 (that is, 8.25 points).