Lists the names of all properties that are referenced by a given projectdoc document via display property macros.
A document property is a name/value pair that is defined in a projectdoc Document. A property name identifies a property within a document.
This list contains all names of properties that are referencing properties from a given projectdoc document via display property macros like the Display Document Properties Macro.
All values in this artificial property are also copied to the projectdoc Property Name References.
The property is useful to list all documents that are using a specific property name in macros that explicitly display properties.