36 GPSMAP 198C Sounder Owner’s ManualM AIN PAGES > H IGHWAY PAGEThe four data fields at the top of the page provide additional user-selectable guidance information. Additionally, a compass ribbonshows your current heading along with a dark, vertical bar thatindicates the direct bearing to the navigation point. When the dark,vertical indicator (or arrow) lines up with the lighter red bar inthe middle, you are heading directly to the navigation point. Usethe Highway Page as your primary navigation page in lieu of theCompass Page when your main concern is following a definedcourse.ZoomScaleData FieldsCourseCurrentWaypointPresentLocationYou can zoom in or out on the Highway Page for a smaller orlarger view. Five available settings range from 1X to 16X, witha default setting of 8X. The current zoom range appears in thebottom right of the screen.To zoom in or out on the Highway Page:Press either the IN or OUT key to increase or decrease thezoom range.Highway Page OptionsThe GPSMAP 198C Sounder’s Highway options page defines thedata fields and selects the waypoints and tracks shown. The datawindow, located at the top of the page, provides a user-selectablelayout of various types of data. Each data field can be configuredto show several data options. The data window layout can beconfigured to show additional data fields and change the size of thedata shown.To show and select the Highway Page options:1. Press MENU.2. Using the ROCKER, highlight an option, and press ENTER.