The document discusses the controlling function of management. It defines controlling as monitoring, comparing, and correcting work performance to ensure objectives are met properly and on time. The main types of control discussed are feedforward, concurrent, and feedback controls. Various control tools and techniques are also outlined, including project management, inventory control, financial ratios, balanced scorecards, and management information systems. Characteristics of effective control systems emphasize being suitable, timely, objective, flexible, economical, and focusing on strategic points while motivating high performance.