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_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)
