The GPSMAP 172/172C’s advanced keypad system is designed to allow for fast, convenient selec-tion of navigation options and data entry. The Getting Started Tour introduces you to the keypad andprovides a ‘hands-on’ lesson in using the GPSMAP 172/172C. We strongly encourage you to take theGetting Started tour before using your unit for actual navigation. The GPSMAP 172/172C Quick Refer-ence Guide contains helpful tips on using the unit and performing various navigation tasks.How To Select Options and Enter DataYou can select and activate options and enter data to customize the GPSMAP 172/172C to fit yourrequirements. You can use the ENTER/MARK key and ARROW KEYPAD to select options, enternames and numbers in data fields, and activate your selections.To select and activate an optional feature:1. With any page displayed, press the MENU key to pop-up the options menu. The options menudisplays a list of optional features which are specific for that particular page. To select any featureon the list of options requires movement of the cursor, which is called “highlighting”, selecting orchoosing an item in a list or a field (box) on a page.2. Use the ARROW KEYPAD to move the cursor (highlight) up and down a list or up, down, andsideways on menus.3. Once you have moved to the desired selection, press the ENTER/MARK key to either activate thefeature or the MENU key to pop-up a sub-menu or list of yet more feature options. Repeat thisprocess to select an option from the list or press the QUIT key to return to the previous setting.The QUIT key moves backwards through these steps back to the main page you started on.To select and activate a function button:1. When moving about a page with function buttons, like the ‘New Map Waypoint’ page, you observefunctions such as ‘Show Map’, ‘Delete’ and ’OK’. To activate the function, highlight the desiredbutton and press the ENTER key.Options Menu withhighlighted option.Use the ARROWKEYPAD to highlightthe next option. PressENTER/MARK toactivate.Pop-up list of options for a highlighted field.Getting StartedSelecting Options