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+## Copyright (C) 2007 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+## 02110-1301, USA.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} __default_plot_options__ ()
+## Return a default options structure for __pltopt__.
+## @seealso{__pltopt__}
+## @end deftypefn
+
+## Author: jwe
+
+function options = __default_plot_options__ ()
+
+  options.key = "";
+  options.color = [];
+  options.linestyle = "-";
+  options.marker = "none";
+
+endfunction