[2252] revise description of zonename (add 'e.g.' before the zone classes)

src/bin/xfrin/b10-xfrin.xml

@@ -235,8 +235,8 @@ operation
               <listitem><simpara>
                 An actual zone name or special zone name
                 <quote>_SERVER_</quote> representing the entire server.
-                Zone classes (e.g. IN, CH, HS) are mixed and counted so far. But
-                these will be distinguished in future release.
+                Zone classes (e.g. IN, CH, and HS) are mixed and counted so
+                far. But these will be distinguished in future release.
                 </simpara>
                 <variablelist>
 

src/bin/xfrin/xfrin.spec

@@ -122,7 +122,7 @@
           "item_optional": false,
           "item_default": {},
           "item_title": "Zone name",
-          "item_description": "An actual zone name or special zone name _SERVER_ representing the entire server. Zone classes (IN, CH, HS) are mixed and counted so far. But these will be distinguished in future release.",
+          "item_description": "An actual zone name or special zone name _SERVER_ representing the entire server. Zone classes (e.g. IN, CH, and HS) are mixed and counted so far. But these will be distinguished in future release.",
           "map_item_spec": [
             {
               "item_name": "soaoutv4",