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+## Copyright (C) 2008 David Bateman
+##
+## 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 3 of the License, 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, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} display (@var{a})
+## Display the contents of an object. If @var{a} is an object of the
+## class "myclass", then @code{display} is called in a case like
+##
+## @example
+## myclass (@dots{})
+## @end example
+##
+## @noindent
+## where Octave is requried to display the contents of a variable of the
+## type "myclass".
+##
+## @seealso{class, subsref, subsasgn}
+## @end deftypefn
+
+function idx = display (a)
+  error ("display: not defined for class \"%s\"", class(a));
+endfunction