A single checkbox A group of radio button A child group of properties Properties are characterized by a name. Once again, the name of the property defaults to the display name unless you specify a display text through the text entry. To add a new property, start by choosing a name for it. For example, MyCheckbox. You assign a type by the means of the type entry.
Feasible values are group, checkbox, radio.
Their meaning is rather self-explanatory. The default value is used only when Explorer isn't able to read the currently set value. The HelpID plays the same role it played for property groups. It is an optional entry representing a page on some help file. If you want to expose a group of mutually exclusive properties then you should create a new group first and then all of its child properties and mark them of type 'radio'.