diff --git a/tren.py b/tren.py
index 9cf28b6..254acce 100755
--- a/tren.py
+++ b/tren.py
@@ -8,7 +8,7 @@
 PROGNAME = "tren.py"
 BASENAME = PROGNAME.split(".py")[0]
 PROGENV  = BASENAME.upper()
-RCSID = "$Id: tren.py,v 1.210 2010/03/23 19:33:57 tundra Exp $"
+RCSID = "$Id: tren.py,v 1.211 2010/03/23 21:15:55 tundra Exp $"
 VERSION = RCSID.split()[2]
 
 # Copyright Information
@@ -169,6 +169,7 @@
 
 # Sequence Alphabets
 
+BINARY     =  "Binary"
 DECIMAL    =  "Decimal"
 OCTAL      =  "Octal"
 HEXLOWER   =  "HexLower"
@@ -441,6 +442,9 @@
 # Alphabets - The User Can Add To These
 
 ALPHABETS  =  {
+
+               BINARY      : ["0", "1"],
+    
                DECIMAL     : ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"],
 
                OCTAL       : ["0", "1", "2", "3", "4", "5", "6", "7"],