description: The Boolean type stands for the values of two-valued logic. A Boolean value can be either true or false, or, as any other value may be NULL. package_name: hl7.cda.uv.core derivation: specialization name: BL type: http://hl7.org/cda/stds/core/StructureDefinition/BL elements: value: type: boolean representation: [xmlAttr] index: 0 package_version: 2.0.0-sd-snapshot1 class: logical kind: logical url: http://hl7.org/cda/stds/core/StructureDefinition/BL base: http://hl7.org/cda/stds/core/StructureDefinition/ANY version: 2.0.0-sd-snapshot1