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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
+_header(PushName,push and pop the name stack)
+_names(PushName)
+.SH PARAMETERS
+_phead(_param1)
+Specifies a name that will be pushed onto the name stack.
+_names(PopName)
+.SH DESCRIPTION
+The name stack is used during selection mode to allow sets of rendering
+commands to be uniquely identified.
+It consists of an ordered set of unsigned integers and is initially empty.
+.P
+_cmnd causes _param1(1) to be pushed onto the name stack.
+_cmnd(PopName) pops one name off the top of the stack.
+.P
+The maximum name stack depth is implementation-dependent; call
+_const(MAX_NAME_STACK_DEPTH) to find out the value for a particular
+implementation. It is an
+error to push a name onto a full stack,
+or to pop a name off an empty stack.
+It is also an error to manipulate the name stack between the execution of
+_cmnd(Begin) and the corresponding execution of _cmnd(End).
+In any of these cases, the error flag is set and no other change is
+made to GL state.
+.P
+The name stack is always empty while the render mode is not _const(SELECT).
+Calls to _cmnd(PushName) or _cmnd(PopName) while the render mode is not
+_const(SELECT) are ignored.
+.SH ERRORS
+_const(STACK_OVERFLOW) is generated if _cmnd(PushName) is called while the
+name stack is full.
+.P
+_const(STACK_UNDERFLOW) is generated if _cmnd(PopName) is called while the
+name stack is empty.
+.P
+_const(INVALID_OPERATION) is generated if _cmnd(PushName) or _cmnd(PopName)
+is executed between a call to _cmnd(Begin) and the corresponding call to
+_cmnd(End).
+.bp
+.SH ASSOCIATED GETS
+_cmnd(Get) with argument _const(NAME_STACK_DEPTH)
+.br
+_cmnd(Get) with argument _const(MAX_NAME_STACK_DEPTH)
+.SH SEE ALSO
+_cmnd(InitNames),
+_cmnd(LoadName),
+_cmnd(RenderMode),
+_cmnd(SelectBuffer)