diff --git a/tren.rst b/tren.rst
index bc8081e..1f60ac3 100644
--- a/tren.rst
+++ b/tren.rst
@@ -472,6 +472,29 @@
   -v   Prints the program version number and keeps running.
 
 
+Controlling Program Output
+==========================
+
+As **tren** runs, it produces a variety of diagnostic and
+status information.  There are a number of options you can
+use to control how this works:
+
+  -q    Set's "quiet" mode and suppresses everthing except
+        error messages.
+
+  -w #  Tells **tren** to wrap lines after '``#``' characters
+        have been printed.  If you're capturing output to
+        a log, set this to a very high number like 999 to
+        inhibit line wrapping.
+
+Error and debug messages are sent to '``stderr``'.  Normal
+informational messages are sent to '``stdout``'.  If you
+want to capture them both in a log, try something like 
+this (depending on your OS and/or shell)::
+
+  tren.py ..... 2>&1 >tren.log
+
+
 Renaming Building Blocks
 ========================
 
@@ -1355,7 +1378,7 @@
 
 ::
 
-  $Id: tren.rst,v 1.146 2010/03/23 22:31:33 tundra Exp $
+  $Id: tren.rst,v 1.147 2010/03/23 22:37:59 tundra Exp $
 
 You can find the latest version of this program at: