Entity Marks and Attributes
Block Attributes can be used to include object data with Entity marks. When you create the Block Attribute, type the name (tag) of the attribute in the following format:
<Name_of_PSD><:>Name_of_Property_Definition>
For example, if the PSD is called 'LineData' and the name of the Property Definition is 'Length' the Tag would be LineData:Length. When the attribute appears in the inserted mark on a line the line's length will be shown in the mark. The values shown in the displayed attribute will update if the associated object is modified.