Use the Layout tab to create a Reference Text component for a label style.
Reference Text components refer to other objects in the drawing, instead of to the object you are labeling.
From the Create Component list 
, click 
to create a new Referenced Text component.
The Select Type dialog box is displayed, where you select the type of data to include in the Referenced Text component.
Note: The Referenced Text component type is available for all new label objects.
After you select the Referenced Text type, the object type you selected is displayed on the Layout tab in the General section.
Note: Once you specify the object type, it cannot be changed. If you want to insert references to a different object type, you must create a new Referenced Text component and select the other object type when you create the new component.
The remainder of the settings that you specify for a Referenced Text component are identical to the settings for a text component. However, when you set up the label contents, you select Properties that refer to the referenced object.