This is the set of resources that conform to both Matchetype Optional Flag (http://hl7.org/fhir/tools/StructureDefinition/matchetype-optional) and Matchetype Optional Flag (http://hl7.org/fhir/tools/StructureDefinition/matchetype-optional).
| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  Extension | 0..* | Marks the element or a set of sub-elements as optional ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both | ||
  url | 1..1 | uri | identifies the meaning of the extension | |
  value[x] | 1..1 | Value of extension ele-1: All FHIR elements must have a @value or children | ||
 valueString | string | |||
 valueBoolean | boolean | |||
| Documentation for this format | ||||