This document provides instructions for using the GPSMAP 78 series owner's manual. It discusses turning the device on and off, acquiring satellite signals, navigating with waypoints and routes, using tracks, customizing the main pages, and using the main menu features and settings. The manual contains information to help users set up and operate the GPS device, including marking waypoints, creating and navigating routes, recording and viewing tracks, changing data fields and page settings. It also provides details on settings, profiles, accessories and more.