Stereotypes may have attributes (tagged values) associated with them. Tagged values are name-value pairs that provide extra information related to the stereotype where they belong. For example, the class illustrated below has the stereotype «attributes» applied to it. Notice that the «attributes» stereotype has tagged values associated with it: a key (name) called "sections" and a value called "Serializable".
A stereotype may have multiple pairs of tagged values. Also, a value can be selected from a set of enumeration values.
You can change how tagged values are displayed on the diagram, or hide them altogether, see Showing or Hiding Tagged Values. For information about changing a stereotype's tagged values, see Applying Stereotypes. For an example that illustrates how to create stereotypes with tagged values, see Example: Creating and Applying Stereotypes.