ISA-101 HMI Design Standard In 2003, the “International Society of Automation” or “ISA”, tasked a group of end-users, operators, and engineers to start working on a standard. In 2015, twelve years later, they published the “ISA-101 HMI Design Standard”. It is the set of guidelines, principles, and philosophies for developing graphics on a process HMI. This standard is meant to create a more functional, easy to understand, and information-driven operator interface. Other control engineers cannot