Make the CHECKPOINT reference page more clear.

Josh Kupershmidt, reviewed by Fujii Masao

diff --git a/doc/src/sgml/ref/checkpoint.sgml b/doc/src/sgml/ref/checkpoint.sgml
index 7ffd40a605e4a743f0dc23498cf9d16a8b69ea43..e70b8c8cb4a052c8f76ab0cee8b2d6c7e449a39e 100644 (file)
--- a/doc/src/sgml/ref/checkpoint.sgml
+++ b/doc/src/sgml/ref/checkpoint.sgml
@@ -25,31 +25,31 @@ CHECKPOINT
  
   Description
 
-  
-   Write-Ahead Logging (WAL) puts a checkpoint in the transaction log
-   every so often. (To adjust the automatic checkpoint interval, see
-   the run-time configuration options 
-   and .)  The
-   CHECKPOINT command forces an immediate
-   checkpoint when the command is issued, without waiting for a
-   scheduled checkpoint.
-  
-
   
    A checkpoint is a point in the transaction log sequence at which
    all data files have been updated to reflect the information in the
    log.  All data files will be flushed to disk.  Refer to
-    for more information about the WAL system.
+    for more details about what happens
+   during a checkpoint.
+  
+
+  
+   The CHECKPOINT command forces an immediate
+   checkpoint when the command is issued, without waiting for a
+   regular checkpoint scheduled by the system (controlled by the settings in
+   ).
+   CHECKPOINT is not intended for use during normal
+   operation.
   
 
   
    If executed during recovery, the CHECKPOINT command
-   will force a restartpoint rather than writing a new checkpoint.
+   will force a restartpoint (see )
+   rather than writing a new checkpoint.
   
 
   
-   Only superusers can call CHECKPOINT.  The command is
-   not intended for use during normal operation.
+   Only superusers can call CHECKPOINT.