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Computer hardware and software products used to link a data acquisition and control system to a display screen/operator interface, or display monitor/operator interface, in industrial environments; computer hardware and software products, namely web-enabled operator interface terminals, used in data acquisition and control systems in industrial environments; computer hardware and software products, namely touchscreen panel personal computers, used in data acquisition and control systems in industrial environments; computer hardware and software products, namely an operator interface terminal that provides flexible graphics to create user-friendly operator screens on any desktop personal computer and which provides graphic libraries and screen templates, provides a development package usable with an unlimited number of runtime systems, provides a human-machine interface tool to create web pages compatible with any personal computer running a standard web browser, provides seamless access of data between human-machine interfaces and programmable logic controller programs, and is constructed for harsh industrial environments that meet IP 65 standards, used in data acquisition and control systems in industrial environments