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diff --git a/octave_packages/vrml-1.0.13/vrml_DirectionalLight.m b/octave_packages/vrml-1.0.13/vrml_DirectionalLight.m
new file mode 100644
index 0000000..3bf52f8
--- /dev/null
+++ b/octave_packages/vrml-1.0.13/vrml_DirectionalLight.m
@@ -0,0 +1,65 @@
+## Copyright (C) 2005-2012 Etienne Grossmann <etienne@egdn.net>
+##
+## This program is free software; you can redistribute it and/or modify it under
+## the terms of the GNU General Public License as published by the Free Software
+## Foundation; either version 3 of the License, or (at your option) any later
+## version.
+##
+## This program is distributed in the hope that it will be useful, but WITHOUT
+## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+## details.
+##
+## You should have received a copy of the GNU General Public License along with
+## this program; if not, see <http://www.gnu.org/licenses/>.
+
+##  s = vrml_DirectionalLight (...)   - Vrml DirectionalLight node
+##
+##  s is a string of the form :
+##  ------------------------------------------------------------------
+##  DirectionalLight { 
+##    exposedField SFFloat ambientIntensity  0        # [0,1]
+##    exposedField SFColor color             1 1 1    # [0,1]
+##    exposedField SFVec3f direction         0 0 -1   # (-,)
+##    exposedField SFFloat intensity         1        # [0,1]
+##    exposedField SFBool  on                TRUE 
+##  }
+##  ------------------------------------------------------------------
+##
+## Options :
+## All the fields of the node
+##
+## See also : vrml_PointLight
+
+function s = vrml_DirectionalLight (varargin) # pos 2.1.39
+
+
+hash = struct ();
+for k=1:2:nargin,
+   hash = setfield(hash,varargin{k:k+1}); 
+end
+
+tpl = struct ("ambientIntensity", "%8.3f",\
+	      "intensity",        "%8.3f",\
+	      "direction",        "%8.3f",\
+	      "on",               "%s",\
+	      "color",            "%8.3f %8.3f %8.3f");
+
+body = "";
+for [val,key] = hash,
+
+  if !(isnumeric(val) && isnan (val)),
+
+				# Check validity of field
+    if !isfield (tpl, key)
+      error (sprintf ("vrml_PointLight : unknown field '%s'",key));
+    end
+
+    body = [body,\
+	    sprintf("   %-20s   %s\n",key,
+		     sprintf(getfield (tpl,key), val))];
+  end
+end
+s = sprintf ("DirectionalLight { \n%s}\n", body);
+endfunction
+