NSIS.InstallOptions.ini

[Settings]
NumFields=3

[Field 1]
Type=Label
Left=0
Right=-1
Top=0
Bottom=24

[Field 2]
Type=RadioButton
Left=30
Right=-1
Top=50
Bottom=58
State=1

[Field 3]
Type=RadioButton
Left=30
Right=-1
Top=70
Bottom=78