diff --git a/CHANGES b/CHANGES
index 442efd468..0bc3d03d5 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3,6 +3,12 @@ SWIG (Simplified Wrapper and Interface Generator)
 4/02/00 : ttn
 	  Incorporated new guilemain.i by Martin Froehlich.
 	  Incorporated guile-support rewrite patch by Matthias Koeppe.
+	  The command line option "-with-smobs" enables implementation of
+	  pointer type handling using smobs, the canonical mechanism for
+	  defining new types in Guile.  Previous implementation (using
+	  strings) is at the moment still supported but deprecated.  At
+	  some point, "-with-smobs" will be the default and no longer
+	  required.
 
 3/13/00 : beazley
           Added purify patches submitted by Ram Bhamidipaty.
@@ -20,7 +26,7 @@ Version 1.3 Alpha 2 (March 1, 2000)
 
 2/29/00 : beazley
           Incorporated some patches to the Perl5 module related to
-          the -hide option and the destruction of objects. 
+          the -hide option and the destruction of objects.
           Patch submitted by Karl Forner.
 
 2/27/00 : ttn