Update HOT description to make index column changes clearer.

diff --git a/doc/src/sgml/release.sgml b/doc/src/sgml/release.sgml
index 7e7a29ad2ece22516db1ac3d47fdf5cca214f08b..1cbc1b02ba1e731f8181856f481358bce7b4c3ad 100644 (file)
--- a/doc/src/sgml/release.sgml
+++ b/doc/src/sgml/release.sgml
@@ -703,13 +703,13 @@ current_date < 2017-11-17
       </para>
 
       <para>
-       <command>UPDATE</>s and <command>DELETE</>s leave dead tuples behind,
-       as do failed <command>INSERT</>s.  Previously only
+       <command>UPDATE</>s and <command>DELETE</>s leave dead tuples
+       behind, as do failed <command>INSERT</>s.  Previously only
        <command>VACUUM</> could reclaim space taken by dead tuples. With
        <acronym>HOT</> dead tuple space can be reclaimed at the time of
-       <command>UPDATE</> or <command>INSERT</>.  This allows for more
-       consistent performance.  Also, <acronym>HOT</> avoids making duplicate
-       index entries when an <command>UPDATE</> changes no indexed columns.
+       <command>UPDATE</> or <command>INSERT</> if no changes are made to
+       indexed columns.  This allows for more consistent performance.
+       Also, <acronym>HOT</> avoids adding duplicate index entries.
       </para>
      </listitem>