The intent of this recommended practice is to present design concepts which are compatible with the physical and mental capabilities of the control center operator while recognizing any of the operator's limitations.

The control center can be designed for efficient functioning of the man-machine system after one first defines the information the operator needs to control the process, and the controls to be provided.

This recommended practice is limited to those aspects of human engineering that will affect the layout of and the equipment selection for the control center. It is recognized that some of the human factors discussed in this document are also used in the design and manufacture of instruments.