Defining an Object's Attributes
If you were describing an object in nature—a tree, for example—you would need to mention certain attributes of that object (such as its type, size, age, color, and so forth). In Enrichment, you also need to describe each of the attributes of the object. To do this, you use tags within the object's tag group. These tags define specific attributes (such as the <TYPE> tag, which describes the type of input). Therefore, tags (and not tag groups) define data about the object.
Objects may also contain or be made up of other objects (such as the organization of a tree into branches). In Enrichment, you include tag groups within other tag groups to indicate hierarchical relationships. Because the Field group is within the Input group, this indicates that the field object described by a specific Field group is located only in the print stream associated with the Input group, as shown above.