<status value="active"/> <date value="2014-03-26"/> <description value="The source Act starts when the target act ends (i.e. if we say "ActOne SCWE ActTwo", it means that ActOne starts when ActTwo ends, therefore ActOne is the source and ActTwo is the target)."/> <immutable value="true"/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/v3-ActRelationshipType"/> <filter> <property value="concept"/> <op value="is-a"/> <value value="SCWE"/> </filter> </include> </compose> </ValueSet>