diff --git a/tren.rst b/tren.rst
index 53a6c6b..8c65afa 100644
--- a/tren.rst
+++ b/tren.rst
@@ -8,7 +8,7 @@
 
 ::
 
-    tren.py [-dhipqtvwx] [-l string] [-r old=new]... [-s number] file|dir file|dir ...
+    tren.py [-bdehipqtvwx] [-l string] [-r old=new]... [-s number] file|dir file|dir ...
 
 
 DESCRIPTION
@@ -68,8 +68,16 @@
 OPTIONS
 -------
 
+  -b   Exclude file/directory "extension" when doing string
+       substitution.
+       (Default: Substitute in the entire file/directory name)
+
+
   -d   Rename by date sequence. (Default: Rename via string replacement.)
 
+  -e   Only do string substitutions in the filename "extension".
+       (Default: Substitute in the entire file/directory name)
+
 
   -g   Replace all instances (greedy replace) of the old string 
        with the new.
@@ -152,7 +160,7 @@
 
 ::
 
-  $Id: tren.rst,v 1.105 2010/01/15 02:32:18 tundra Exp $
+  $Id: tren.rst,v 1.106 2010/01/15 02:39:41 tundra Exp $
 
 You can find the latest version of this program at: