What is a Tagged Value?
A Tagged Value, strictly, is the value of a property of a modeling item, the property being called a tag. For example, a Class element called Person might have a tag called Age with the Tagged Value of 42. More loosely, the combination of tag and value can be referred to as a Tagged Value. A Tagged Value Type is a group of parameters that define and/or limit the possible values of a tag and, in many instances, how a specific value is assigned to the tag. For example, the tag Age might have a Tagged Value Type of Integer, so the user simply types in a numeric value. Alternatively, the type could be Spin, with lower and upper limits of, say, 20 and 120, so the user sets a value by clicking on arrows in the field to increment or decrement the value within the limits of 20 and 120.
