Can be in any context. Component to retrieve can be specified by either absolute or relative path.
retrieveCommand =  OMBRETRIEVE "fco_type" "fco_name" { "sco_type" 
          "sco_name" } ( "getPropertiesClause" | "getSCOClause" )
     getPropertiesClause =  GET PROPERTIES "(" "propertyNameList" ")"
     getSCOClause =  GET [ ( REF | REFERENCE ) [ "qualifier" ] ] "sco_type" [ AT
           POSITION "pos" ]
     propertyNameList =  "propertyName" { "," "propertyName" }
     propertyName =  "UNQUOTED_STRING"