Thermal3 Command: shutter (open|close)


Description	Open / close the internal shutter.
	Note that this monitor command is intended to simulate Thermal 1.0 / 1.7x functionality.
Notes	Thermal 1.0 / 1.7x equivalents:
	The monitor command shutter (open\|close) is equivalent to shutter (open\|close).
	Thermal 2 equivalents:
	The monitor command shutter (open\|close) is equivalent to shutter (open\|close).
Related Documents	COMMAND: sys shutter (open\|close)
	ERRORCODE: [07400] The shutter control is invalid
	PARAMETER: sys plotenable