Wording improvements for archive_timeout.

doc/src/sgml/config.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.79 2006/09/02 13:12:50 momjian Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.80 2006/09/02 21:11:26 momjian Exp $ -->
 
 <chapter Id="runtime-config">
   <title>Server Configuration</title>
@@ -1591,8 +1591,8 @@ archive_command = 'copy "%p" /mnt/server/archivedir/"%f"'  # Windows
       </indexterm>
       <listitem>
        <para>
-        The <xref linkend="guc-archive-command"> is only invoked on completed 
-        WAL segments. Hence,
+        By default, the <xref linkend="guc-archive-command"> is only invoked
+        on completed WAL segments. Hence,
         if your server generates only little WAL traffic (or has slack periods 
         where it does so), there could be a long delay between the completion
         of a transaction and its safe recording in archive storage.  To put
@@ -1602,7 +1602,7 @@ archive_command = 'copy "%p" /mnt/server/archivedir/"%f"'  # Windows
         greater than zero, the server will switch to a new segment file
         whenever this many seconds elapse since the last segment file switch.
         Note that archived
-        files that are ended early due to a forced switch are still the same
+        files that are closed early due to a forced switch are still the same
         length as completely full files.  It is therefore unwise to set a very
         short <varname>archive_timeout</> &mdash; it will bloat your archive
         storage.  <varname>archive_timeout</> settings of a minute or so are