@c -*-texinfo-*-
@c This is part of the GNU Emacs Lisp Reference Manual.
@c Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2001,
-@c 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+@c 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
@c See the file elisp.texi for copying conditions.
@setfilename ../../info/symbols
@node Symbols, Evaluation, Hash Tables, Top
example using @code{mapatoms}.
@end defun
-@defun unintern symbol &optional obarray
+@defun unintern symbol obarray
This function deletes @var{symbol} from the obarray @var{obarray}. If
@code{symbol} is not actually in the obarray, @code{unintern} does
nothing. If @var{obarray} is @code{nil}, the current obarray is used.