Menu: View→Interface Properties→Typefaces→Parameter Values
Select a typeface for parameter names and values.
All parameter names and values are displayed with the same typeface, but each parameter name or value can be displayed in a different font. See To change the font for a parameter.
Programming
In Amos Graphics programs, you can select the first item in this ComboBox as follows (Visual Basic):
Dim aComboBox As Windows.Forms.ComboBox = pd.GetComboBox("InterfacePropertiesForm", "ComboTypefaces_ParameterValues")
aComboBox.SelectedIndex = 0