Procedures provide clear instructions for hands-on service activities. Tech Tips provide advice and guidance with an “on-the-job” focus. Thinking Green notes highlight items related to sustainability, energy effi ciency, and environmental issues. Summary feature provides an additional review tool for you and reinforces key chapter topics. Review Questions allow you to demonstrate knowledge and comprehension of chapter material. NIMS Credentialing Preparation Questions help prepare you to successfully achieve NIMS Industrial Technology Maintenance credentials.