8-zone query: Clarifications

core/requirements/zone-query/REQ_zone-query_zones-list-response.adoc

@@ -4,10 +4,10 @@
 label:: /req/zone-query/zones-list-response
 description:: For the response to a query requesting a list of DGGS zones:
 part:: The response of the HTTP GET operation SHALL have a status code of 200.
-part:: The content of the response SHALL be a list of zones where data is available
+part:: The content of the response SHALL be a list of zones fully covering where data is available
 (in the case where the resource is associated with a particular dataset), and
-matching any additional query parameters specified by the client (e.g., a filtering query parameter).
-part:: The zones in the returned list SHALL fully cover where data is available, but SHALL NOT overlap.
+matching any additional query parameters specified by the client (e.g., a filtering query parameter),
+without any redundancy.
 part:: Unless the zones is a compact list of zones (see `compact-zones` parameter), the zones returned
 SHALL all be of the same DGGS hierarchy level.
 part:: The selection of an encoding for the returned list of zones SHALL be consistent with

core/sections/clause_8_dggs_zone_query.adoc

@@ -45,7 +45,7 @@ include::../requirements/zone-query/REQ_zone-query_zone-level-response.adoc[]
 
 By default, implementations return a compact list of zones where children zones fully covering a parent
 are recursively replaced by the parent zones, allowing to express large areas in a much more compact list of zones.
-The following requirements describe how a client can disable returning a compact list of zones. (the default),
+The following requirements describe how a client can disable returning a compact list of zones.
 
 ===== Parameter