An operator may enter a desired performance by equipment on first computer which is placed in a communications packet with a device number, channel number, and one or more parameters and then sent to {HEAD ~ central controller} for {TAIL ~ processing} 
An operator may enter a desired performance by equipment on first computer which is placed in a communications packet with a device number , channel number , and one or more parameters and then sent to { HEAD ~ central controller } for { TAIL ~ processing }
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