sharding: clarification about sorted queries

Author: Sam Kleinman

source/core/sharding-internals.txt

@@ -184,13 +184,10 @@ compound shard key.
 Sorting
 ```````
 
-If you use the :method:`sort() <cursor.sort()>` method on a query in a
-sharded MongoDB environment *and* the sort is on a field that is *not*
-part of the shard key, :program:`mongos` must send the query to all
-:program:`mongod` instances in the cluster. :program:`mongos` must
-wait for a response from every shard before it can merge the results
-and return data. If you require high performance sorted queries,
-ensure that the sort key is a component of the shard key.
+In sharded systems, the :program:`mongos` performs a merge-sort of all
+sorted query results from the shards. See the :ref:`sharded query
+routing <sharding-query-routing>` and :ref:`index-sort` sections for
+more information.
 
 .. _sharding-internals-operations-and-reliability:
 

source/core/sharding.txt

@@ -473,7 +473,7 @@ ensuring that your operations include the shard key.
       { c: 1 }
       { b: 1, c: 1 }
 
-.. [#possible-all] :program:`mongos` will round some queries, even
+.. [#possible-all] :program:`mongos` will route some queries, even
    some that include the shard key, to all shards, if needed.
 
 Sharded Query Response Process