diff --git a/tren.rst b/tren.rst
index 2f8c6c0..f479366 100644
--- a/tren.rst
+++ b/tren.rst
@@ -1455,10 +1455,17 @@
 In short, sequences are just strings of numbers used to put
 things in some order.
 
-You can always tell the difference between an attribute-
-and sequence renaming token, because sequence renaming tokens
-always start with either a ``+`` or ``-`` sign (to indicate
-ascending or descending counting respectively).
+You can always tell the difference between an attribute- and sequence
+renaming token, because sequence renaming tokens always start with
+either a ``+`` or ``-`` sign (to indicate ascending or descending
+counting respectively).  This distinction is important because some
+attribute- and sequence renaming tokens share the same name.  For
+instance, ``/FNAME/`` is an attribute token representing the original
+name of the file before it was renamed.  However, ``/+FNAME::003/`` is
+a sequence renaming token that returns the position of the file name
+in alphabetic order starting counting from ``003``.  Although they are
+both based on the file name (hence the common renaming token symbol),
+they do very different things.
 
 
 How **tren** Uses File Metadata
@@ -1956,7 +1963,7 @@
 
 ::
 
-  $Id: tren.rst,v 1.163 2010/03/29 21:41:13 tundra Exp $
+  $Id: tren.rst,v 1.164 2010/03/30 00:42:10 tundra Exp $
 
 You can find the latest version of this program at: