diff --git a/tren.rst b/tren.rst
index 0da21ab..18704c1 100644
--- a/tren.rst
+++ b/tren.rst
@@ -2072,7 +2072,7 @@
   UpperLower -  Counting in Base 52 using first upper- then lower case letters
 
 
-.. NOTE:: **The difference between a "base" and a "symbol set".**
+.. TIP::  **The difference between a "base" and a "symbol set".**
 
           In order to make such counting-based renamings as flexible
           as possible, **tren** is built to be able to count *in any
@@ -2119,10 +2119,14 @@
 customize your sequence renaming token output.  There are a few things to
 keep in mind, however:
 
-- The counting *base* is determined by the *length of the symbol set*
-  not what characters you use.
+- The counting *base* is determined by the *number of symbols in the
+  symbol set* not what characters you use.  In the example above,
+  we're counting in base 3 irrespective of what symbols are used
+  to represent each "number".
 
 - You can define as many new alphabets as you like on the command line.
+  (Well ... up to the maximum command line length limit imposed by
+  the shell and/or operating system you're using.)
 
 - The alphabet name is case sensitive.  ``Foo``, ``FOO``, and ``foo``
   are all different alphabet names (assuming they are all defined).
@@ -2342,7 +2346,7 @@
 
 ::
 
-  $Id: tren.rst,v 1.176 2010/04/06 21:44:45 tundra Exp $
+  $Id: tren.rst,v 1.177 2010/04/07 18:25:24 tundra Exp $
 
 You can find the latest version of this program at: