description: A URL that resolves to additional supporting information or guidance related to the question. If there's more than one repetition of this extension, all a UI can do to help the user differentiate which to click on is displaying the URI (e.g. as a flyover).  If displaying the URI might not be appropriate or helpful, it may be more useful to use a nested 'display' item of type 'helpText' which can then specify multiple hyperlinks with appropriate labels and/or surrounding guidance text. This extension has been deprecated in favor of `questionnaire-supportHyperlink`, which allows display text to accompany each support link. This extension only conveyed the URI, making it unclear to users what each link referred to.
package_name: hl7.fhir.uv.extensions.r4b
derivation: constraint
name: QSupportLink
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/questionnaire-supportLink'}
    index: 1
  value:
    choices: [valueUri]
    index: 3
  valueUri: {type: uri, choiceOf: value, index: 4}
package_version: 5.3.0-ballot-tc
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/questionnaire-supportLink
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.3.0-ballot-tc
required: [valueUri, value]