User Defined Types
Users can create user-defined types and add values to them in this form. Once a user-defined type is specified as the source for a component that supports lists (a combo box, for example), users can add values to the type directly through the right-click Add function. In the example above, a user might add the value "X-Large."
User-defined type refers to a named group of data values that can be used as a list source for a component. For example, a user-defined type named "Size" could invoke a list of values consisting of "Small," "Medium," and "Large."
Value and Description pairs display in a two-column list.