diff --git a/tren.py b/tren.py
index 8949044..94ec2a4 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 1.188 2010/03/12 03:04:12 tundra Exp $"
+RCSID = "$Id: tren.py,v 1.189 2010/03/12 22:19:29 tundra Exp $"
 VERSION = RCSID.split()[2]
 
 # Copyright Information
@@ -290,6 +290,8 @@
 iRENFORCED    =  "Target '%s' Exists.  Creating Backup."
 iRENSKIPPED   =  "Target '%s' Exists. Renaming Of '%s' Skipped."
 iRENAMING     =  "Renaming '%s' " + ARROW + " '%s'."
+iSEQTOOLONG   =  "Sequence number %s, longer than format string %s, Rolling over!"
+
 
 #####
 # Usage Prompts
@@ -1102,6 +1104,21 @@
 
 def ComputeSeqString(fmt, incr, alphabet):
 
+    """ 
+        fmt      = A literal "format field" string
+        incr     = A integer to be "added" to the field
+        alphabet = The alphabet of characters to use, in ascending order
+
+        Add 'incr' to 'fmt' in base(len(alphabet)).  Characters in
+        'fmt' that are not in 'alphabet' are ignored in this addition.
+
+        The final result is limited to be no longer than 'fmt'.  Any
+        result longer than fmt has MSD dropped, thereby effectively
+        rolling over the count.  If 'fmt' is null on entry, the final
+        result length is unlimited.
+    """
+    
+    
     fmtlen   = len(fmt)
     alphalen = len(alphabet)
     newval   = ""
@@ -1114,7 +1131,7 @@
     
 
     # First convert the increment into a string in the base of the
-    # alphabet.
+    # alphabet
 
     idigits = []
     while incr >  alphalen-1:
@@ -1126,7 +1143,7 @@
     idigits.reverse()
     incr = "".join(idigits)
 
-    # Now to right-to-left digit addition with the format
+    # Now do right-to-left digit addition with the format
     # field.
 
     # Do position-wise "addition" via symbol substitution moving from
@@ -1148,7 +1165,7 @@
 
         sum += alphabet.index(incr[i])
 
-        # Do arithmetic modulo alphabet length.
+        # Do arithmetic modulo alphabet length
             
         carry, digit = sum/alphalen, sum % alphalen
 
@@ -1174,7 +1191,7 @@
         while newval and newval[0] == alphabet[0]:
             newval = newval[1:]
 
-
+ 
     # Constrain the results to the length of the original format
     # string, rolling over and warning the user as necessary.  The one
     # exception to this is when a null format string is passed.  This
@@ -1186,7 +1203,7 @@
     if fmtlen:
         
         if len(newval) > fmtlen:
-            print "Result longer than pattern, rolling over"
+            InfoMsg(iSEQTOOLONG % (newval,fmt))
             newval = newval[-fmtlen:]
 
         return  fmt[:-len(newval)] + newval