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diff --git a/octave_packages/m/general/loadobj.m b/octave_packages/m/general/loadobj.m
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+## Copyright (C) 2008-2012 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} {@var{b} =} loadobj (@var{a})
+## Method of a class to manipulate an object after loading it from a file.
+## The function @code{loadobj} is called when the object @var{a} is loaded
+## using the @code{load} function.  An example of the use of @code{saveobj}
+## might be to add fields to an object that don't make sense to be saved.
+## For example:
+##
+## @example
+## @group
+## function b = loadobj (a)
+##   b = a;
+##   b.addmissingfield = addfield (b);
+## endfunction
+## @end group
+## @end example
+##
+## @seealso{saveobj, class}
+## @end deftypefn
+
+function b = loadobj (a)
+  error ("loadobj: not defined for class \"%s\"", class(a));
+endfunction