redo record -> undo record, Tom Lane.

diff --git a/doc/src/sgml/wal.sgml b/doc/src/sgml/wal.sgml
index 69616409e8140617d8cd88a033480930d0e311a4..dfb90e6e6c0ae073d3a3acf3d8c22cb44c346c86 100644 (file)
--- a/doc/src/sgml/wal.sgml
+++ b/doc/src/sgml/wal.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  Write-Ahead Logging (<acronym>WAL</acronym>)
@@ -243,7 +243,7 @@
    log (known as the redo record) it should start the REDO operation,
    since any changes made to data files before that record are already
    on disk. After a checkpoint has been made, any log segments written
-   before the redo record are removed, so checkpoints are used to free
+   before the undo records are removed, so checkpoints are used to free
    disk space in the WAL directory. (When
    WAL-based BAR is implemented,
    the log segments can be archived instead of just being removed.)