This part of ISO 15519 provides rules and guidelines for representation of measurement, control, and actuation in diagrams for process industry. General rules and guidelines for preparation of diagrams for process industry, for example types and descriptions of diagrams, layout of diagrams, graphical symbols, lines and connection, reference designation, are given in ISO 15519-1. Rules and guidelines for preparation of electrotechnical diagrams are given in IEC 61082-1.