Elements
Elements of values are values contained within other values. Composite values have elements; simple values do not. The sample value class definition in Figure 3-1 shows one element, called an item.Use references to refer to elements of composite values. For example, the following reference specifies the third item in a list:
item 3 of {"To", "be", "great", "is", "to", "be", "misunderstood"} --result: "great"The "Reference Forms" section of a composite value class definition lists the reference forms you can use to specify elements of composite values.