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+# Copyright (C) 1993, 1994 John W. Eaton
+# 
+# This file is part of Octave.
+# 
+# Octave 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 2, or (at your option) any
+# later version.
+# 
+# Octave 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 Octave; see the file COPYING.  If not, write to the Free
+# Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+function shg ()
+
+# usage: shg
+#
+# Show the graph window.  Currently, this is the same as executing
+# replot without any arguments.
+#
+# See also: plot, semilogx, semilogy, loglog, polar, mesh, contour,
+#           bar, stairs, gplot, gsplot, replot, xlabel, ylabel
+
+  if (nargin != 0)
+    warning ("shg: ignoring extra arguments");
+  endif
+
+  replot
+
+endfunction