This recommended practice applies to, and provides the basis for, the philosophy, design, implementation (including building displays, testing, training, commissioning, and verification), operation (including maintenance and decommissioning) of Human Machine Interface (HMIs) used with electric utility automation systems. The visualization elements covered are screen philosophies, data presentation format, HMI organization and structure, menus and their hierarchies, screen navigation, graphics and color conventions, pan and zoom functions, clutter/declutter, dynamic elements, popup conventions, help screens, and methods used to work with alarms. This recommended practice is technology-agnostic or independent of various software and hardware platforms. Application to HMIs with small screen sizes or to vendor-provided Intelligent Electronic Device (IED) configuration software including HMI-like functionality may have limited visualization elements.