Furuno FEA-2107 Operator's Manual page 202

9. Raster Chart Material
ARCS details page
The ARCS details page provides details about current ARCS chart.
To open this box, spin the thumbwheel to show Chart
Display/Info/Standard Display in the mouse functions area and then
push the left mouse button. You can change pages by clicking the
right mouse button (Choose Next), clicking the arrow tabs in the
dialog box.
View original: Check to show current chart without displaying updated parts.
Mark updates: Check to show updated parts of chart with red rectangles.
The figures below show how to find places on the chart which have been updated.
The ARCS chart that
is displayed for
"normal" use.
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