<status value="draft" /> <date value="2020-01-18" /> <publisher value="HL7" /> <description value="References a location within a set of source text from which the discrete information described by this Resource/Element was extracted." /> <fhirVersion value="4.6.0" /> <mapping> <identity value="rim" /> <uri value="http://hl7.org/v3" /> <name value="RIM Mapping" /> </mapping> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Resource" /> </context> <context> <type value="element" /> <expression value="Element" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="References a location within a set of source text from which the discrete information described by this Resource/Element was extracted." /> <definition value="References a location within a set of source text from which the discrete information described by this Resource/Element was extracted." /> <constraint> <key value="der-1" /> <severity value="error" /> <human value="Cannot have length if offset is missing." /> <expression value="extension.where(url='length').exists() implies extension.where(url='offset').exists()" /> <xpath value="todo-remove-this-line-when-build-process-allows-that" /> <source value="http://hl7.org/fhir/StructureDefinition/derivation-reference" /> </constraint> </element> <element id="Extension.extension:reference"> <path value="Extension.extension" /> <sliceName value="reference" /> <short value="Source reference." /> <definition value="References a location within a set of source text from which the discrete information described by this Resource/Element was extracted." /> <min value="0" /> <max value="1" /> </element> <element id="Extension.extension:reference.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:reference.url"> <path value="Extension.extension.url" /> <fixedUri value="reference" /> </element> <element id="Extension.extension:reference.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <type> <code value="Reference" /> </type> </element> <element id="Extension.extension:path"> <path value="Extension.extension" /> <sliceName value="path" /> <short value="Element containing text." /> <definition value="Corresponds to the element within the resource containing the text." /> <comment value="Follows the FHIRPath expression syntax used for OperationOutcome. If not present, then the resource must either be a Binary or a DocumentReference (with a single content element) and the content is the text represented by the instance or the attachment. If the DocumentReference has more than one 'content', then this path element SHALL be present to distinguish which repetition the derivation occurred from." /> <min value="0" /> <max value="1" /> </element> <element id="Extension.extension:path.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:path.url"> <path value="Extension.extension.url" /> <fixedUri value="path" /> </element> <element id="Extension.extension:path.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <type> <code value="string" /> </type> </element> <element id="Extension.extension:offset"> <path value="Extension.extension" /> <sliceName value="offset" /> <short value="Starting position." /> <definition value="Indicates the starting position (as a count of characters) within the text where the relevant derivation began." /> <min value="0" /> <max value="1" /> <meaningWhenMissing value="If not specified, the location at which derivation started is unknown." /> </element> <element id="Extension.extension:offset.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:offset.url"> <path value="Extension.extension.url" /> <fixedUri value="offset" /> </element> <element id="Extension.extension:offset.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <type> <code value="integer" /> </type> </element> <element id="Extension.extension:length"> <path value="Extension.extension" /> <sliceName value="length" /> <short value="Number of characters." /> <definition value="Indicates the number of characters following the start position/beginning of the document that was used as part of the derivation process." /> <min value="0" /> <max value="1" /> <meaningWhenMissing value="If not specified, the location at which derivation ended is unknown." /> </element> <element id="Extension.extension:length.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:length.url"> <path value="Extension.extension.url" /> <fixedUri value="length" /> </element> <element id="Extension.extension:length.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <type> <code value="integer" /> </type> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://hl7.org/fhir/StructureDefinition/derivation-reference" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <max value="0" /> </element> </differential> </StructureDefinition>