Sometimes, a property will have a fixed set of possible values (e.g. "Shift" "Control" "Alt" "None" for keypress modifiers). Selecting the "Edit Enumerations" button for a property description will open a window which allows you to define the set of allowed values. When VjControl is displaying a Property with a set of enumerated values, it can present the choices using a menu instead of requiring the user to type a value. The enumerations feature can also be used to provide text names for numeric or boolean values (e.g. assigning the string "NTSC" to the value 60, and "PAL" to 50).