7.2.2-2 Visually Distinct Components

The representation of components and variables within selection displays should be visually distinct to support their correct selection.

Additional Information:
Using a standard set of symbols and layout conventions in displays is important in reducing the mental workload associated with finding and interpreting information. However, these factors may also cause components to look alike and may contribute to operators selecting the wrong component. The symbols and graphical icons used to represent different types of components should be designed to be readily recognized and distinguished. In addition, they should be clearly labeled for correct identification.