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+_C_ License Applicability. Except to the extent portions of this file are
+_C_ made subject to an alternative license as permitted in the SGI Free
+_C_ Software License B, Version 1.1 (the "License"), the contents of this
+_C_ file are subject only to the provisions of the License. You may not use
+_C_ this file except in compliance with the License. You may obtain a copy
+_C_ of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+_C_ Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+_C_
+_C_ http://oss.sgi.com/projects/FreeB
+_C_
+_C_ Note that, as provided in the License, the Software is distributed on an
+_C_ "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+_C_ DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+_C_ CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+_C_ PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+_C_
+_C_ Original Code. The Original Code is: OpenGL Sample Implementation,
+_C_ Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+_C_ Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+_C_ Copyright in any portions created by third parties is as indicated
+_C_ elsewhere herein. All Rights Reserved.
+_C_
+_C_ Additional Notice Provisions: The application programming interfaces
+_C_ established by SGI in conjunction with the Original Code are The
+_C_ OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+_C_ April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+_C_ 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+_C_ Window System(R) (Version 1.3), released October 19, 1998. This software
+_C_ was created using the OpenGL(R) version 1.2.1 Sample Implementation
+_C_ published by SGI, but has not been independently verified as being
+_C_ compliant with the OpenGL(R) version 1.2.1 Specification.
+_C_
+_C_ The first character in this file must be an '_'!
+_C_ Anything on a line after _C_ is ignored
+_define(_filters,tbl|eqn)_C_
+_C_ eqn is automatically replaced with neqn for nroff
+_header(Normal,set the current normal vector)
+.EQ
+delim $$
+.EN
+_names(Normal,3[bdfis])
+.SH PARAMETERS
+_phead(_param1 _param2 _param3)
+Specify the $x$, $y$, and $z$ coordinates of the new current normal.
+The initial value of the current normal is the unit vector, (0, 0, 1).
+.P
+_names(Normal,3[bsidf]v)
+.SH PARAMETERS
+_phead(_param1)
+Specifies a pointer to an array of three elements:
+the $x$, $y$, and $z$ coordinates of the new current normal.
+.P
+.SH DESCRIPTION
+The current normal is set to the given coordinates
+whenever _cmnd is issued.
+Byte, short, or integer arguments are converted to floating-point
+format with a linear mapping that maps the most positive representable integer
+value to 1.0,
+and the most negative representable integer value to \-1.0.
+.P
+Normals specified with _cmnd need not have unit length.
+If _const(NORMALIZE) is enabled,
+then normals of any length specified with _cmnd are normalized after transformation.
+If _const(RESCALE_NORMAL) is enabled, normals are scaled by a scaling factor
+derived from the modelview matrix. _const(RESCALE_NORMAL) requires that the
+originally specified normals were of unit length, and that the modelview
+matrix contain only uniform scales for proper results.
+To enable and disable normalization, call _cmnd(Enable) and _cmnd(Disable)
+with either _const(NORMALIZE) or _const(RESCALE_NORMAL).
+Normalization is initially disabled.
+.SH NOTES
+The current normal can be updated at any time.
+In particular, _cmnd can be called between a call to _cmnd(Begin) and
+the corresponding call to _cmnd(End).
+.SH ASSOCIATED GETS
+_cmnd(Get) with argument _const(CURRENT_NORMAL)
+.br
+_cmnd(IsEnabled) with argument _const(NORMALIZE)
+.br
+_cmnd(IsEnabled) with argument _const(RESCALE_NORMAL)
+.SH SEE ALSO
+_cmnd(Begin),
+_cmnd(Color),
+_cmnd(Index),
+_cmnd(NormalPointer),
+_cmnd(TexCoord),
+_cmnd(Vertex)