Static List Property

Hi, I'm trying to use a static list property in a small application. I would like to feel this listbox with several possible values. But I can't find any documentation on the format that is needed in the "Values" field when I edit this property. What is a correct syntax in order to have a list box with values : "a", "b" and "c" ? Or even better where can I find any documentation on this field and others properties ? Thanks, Arnaud Lesueur