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diff --git a/src/glu/sgi/libtess/tessmono.h b/src/glu/sgi/libtess/tessmono.h
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-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-/*
-** Author: Eric Veach, July 1994.
-**
-*/
-
-#ifndef __tessmono_h_
-#define __tessmono_h_
-
-/* __gl_meshTessellateMonoRegion( face ) tessellates a monotone region
- * (what else would it do??)  The region must consist of a single
- * loop of half-edges (see mesh.h) oriented CCW.  "Monotone" in this
- * case means that any vertical line intersects the interior of the
- * region in a single interval.  
- *
- * Tessellation consists of adding interior edges (actually pairs of
- * half-edges), to split the region into non-overlapping triangles.
- *
- * __gl_meshTessellateInterior( mesh ) tessellates each region of
- * the mesh which is marked "inside" the polygon.  Each such region
- * must be monotone.
- *
- * __gl_meshDiscardExterior( mesh ) zaps (ie. sets to NULL) all faces
- * which are not marked "inside" the polygon.  Since further mesh operations
- * on NULL faces are not allowed, the main purpose is to clean up the
- * mesh so that exterior loops are not represented in the data structure.
- *
- * __gl_meshSetWindingNumber( mesh, value, keepOnlyBoundary ) resets the
- * winding numbers on all edges so that regions marked "inside" the
- * polygon have a winding number of "value", and regions outside
- * have a winding number of 0.
- *
- * If keepOnlyBoundary is TRUE, it also deletes all edges which do not
- * separate an interior region from an exterior one.
- */
-
-int __gl_meshTessellateMonoRegion( GLUface *face );
-int __gl_meshTessellateInterior( GLUmesh *mesh );
-void __gl_meshDiscardExterior( GLUmesh *mesh );
-int __gl_meshSetWindingNumber( GLUmesh *mesh, int value,
-			        GLboolean keepOnlyBoundary );
-
-#endif