Tweak and reword release notes

doc/notes/notes-9.21.9.rst

@@ -17,56 +17,66 @@ New Features
 
 - Add support for zone templates.
 
-  To simplify the configuration of multiple similar zones, BIND now
+  To simplify the configuration of multiple similar zones, BIND 9 now
-  supports a zone template mechanism. `template` blocks containing zone
+  supports a zone template mechanism. :namedconf:ref:`template` blocks
-  options can be defined at the top level of the configuration file;
+  containing zone options can be defined at the top level of the
-  they can then be referenced in `zone` statements. A zone referencing a
+  configuration file and then referenced in :namedconf:ref:`zone`
-  template will use the options in the specified `template` block as
+  statements. A zone referencing a template uses the options in the
-  defaults. (Options locally defined in the `zone` statement override
+  specified :namedconf:ref:`template` block as defaults. (Options
-  the template.)
+  locally defined in the zone statement override the template.)
 
   The filename for a zone can now be generated parametrically from a
-  format specified in the `file` option. The first occurrences of
+  format specified in the :namedconf:ref:`file` option. The first
-  `$name`, `$type` and `$view` in `file` are replaced with the zone
+  occurrences of ``$name``, ``$type``, and ``$view`` in file are
-  origin, the zone type (i.e., primary, secondary, etc), and the view
+  replaced with the zone origin, the zone type (i.e., primary,
-  name, respectively.
+  secondary, ...), and the view name, respectively.
 
-  Primary zones can now take an `initial-file` option, specifying the
+  Primary zones can now take an :namedconf:ref:`initial-file` option,
-  path to a generic zone file that will be copied into the zone's `file`
+  specifying the path to a generic zone file that are copied into the
-  path when the zone is first loaded, if the `file` does not already
+  zone's file path when the zone is first loaded, if the file does not
-  exist.
+  already exist.
 
-  For example, the following template can be used for primary zones: ```
+  For example, the following template can be used for primary zones:
-  template primary {                 type primary;                 file
+
-  "$name.db";                 initial-file "generic.db";         }; ```
+  ::
+
+
+    template primary {
+      type primary;
+      file "$name.db";
+      initial-file "generic.db";
+    };
 
   With this template in place, a new primary zone could be added using a
-  single `rndc addzone` command:
+  single :option:`rndc addzone` command:
 
-  ```         $ rndc addzone example.com '{ template primary; };' ```
+  ::
 
-  The zone would be created using the filename `example.com.db`, which
+
-  would be copied into place from `generic.db`. :gl:`#2964`
+    rndc addzone example.com '{ template primary; };'
+
+  The zone would be created using the filename ``example.com.db``, which
+  would be copied into place from ``generic.db``. :gl:`#2964`
 
 - Redesign the unreachable primaries cache.
 
   Previously, the cache for the unreachable primary servers was limited
-  to 10 entries (LRU) and a fixed 10 minutes delay for each entry,
+  to 10 entries (LRU) with a fixed 10-minute delay for each entry,
   unless removed forcibly by a new entry. The cache is now redesigned to
-  remove the 10 entry limitation and to introduce delay values with
+  remove the 10-entry limitation and to introduce delay values with an
-  exponential backoff time - initially an unreachable primary server is
+  exponential backoff time: initially an unreachable primary server is
   cached as being unreachable for 10 seconds, but each time the cache
   entry is expired and the same server is added again during the
-  eligibility period of the next 120 seconds, the delay time is doubled
+  eligibility period of the next 120 seconds, the delay time is doubled,
-  up until to the maximum of 640 seconds. :gl:`#3992`
+  up to the maximum of 640 seconds. :gl:`#3992`
 
-- Implement a new 'notify-defer' configuration option.
+- Implement a new :namedconf:ref:`notify-defer` configuration option.
 
   This new option sets a delay (in seconds) to wait before sending a set
-  of NOTIFY messages for a zone. Whenever a NOTIFY message is ready to
+  of ``NOTIFY`` messages for a zone. Whenever a ``NOTIFY`` message is
-  be sent, sending will be deferred for this duration. This option is
+  ready to be sent, sending is deferred for this duration. This option
-  not to be confused with the :any:`notify-delay` option. The default is
+  should not be confused with the :namedconf:ref:`notify-delay` option.
-  0 seconds. :gl:`#5259`
+  The default is 0 seconds. :gl:`#5259`
 
 Bug Fixes
 ~~~~~~~~~
@@ -81,8 +91,8 @@ Bug Fixes
 - Fix a zone refresh bug.
 
   A secondary zone could fail to further refresh with new versions of
-  the zone from a primary server if named was reconfigured during the
+  the zone from a primary server if :iscman:`named` was reconfigured
-  SOA request step of an ongoing zone transfer. This has been fixed.
+  during the SOA request step of an ongoing zone transfer. This has been
-  :gl:`#5307`
+  fixed.  :gl:`#5307`