http://hl7.org/fhir/StructureDefinition/narrativeLink|5.2.0

A human language representation of the concept (resource/element), as a url that is a reference to a portion of the narrative of a resource ([DomainResource.text](narrative.html) or [Composition.section.text](composition-definitions.html#Composition.section.text)). To provide human language maintained separately from the narrative, use [originalText](StructureDefinition-originalText.html).