Current text: The server decides which parameters to return in  ValueSet.expansion.parameter , but at a minimum, the list SHOULD include all of the parameters (server default and provided) that affect the  $expand  operation. If the codeSystem on the server has a specified version then this version SHALL be provided as a parameter in the expansion (note that not all code systems have a version).  Change to this: The server decides which parameters to return in  ValueSet.expansion.parameter , but at a minimum, the list SHOULD include: All input parameters defined by the $expand operation and provided by the client and used by the server to generate the expansion All input parameters defined by the $expand operation and their values for which the server provided default values  Canonical or URI references (including version) for all CodeSystems, CodeSystem Supplements and ValueSets  used in the expansion