A Content Creator that implements the Entry Reference Tagging Option produces CDA documents that contain narrative text linked with machine readable entry elements. This supplies semantic context in the narrative. This entry reference tagging may be used by style sheets to determine what human readable text to display.

A Content Consumer that implements the Entry Reference Tagging Option uses the narrative links to provide semantic based formatting options to the end user during the view operation.

Essentially, this means that there are choices that the end user can make to change what is displayed for them according to their preferences.