Another undocumented function of coastal explorer.
Highlight objects.
What exactly does this function do?
The built-in help does not answer the question.
The ECS reference manual @ p51 only says that you can use Highlight Objects to highlight tide/current stations. That is the only mention of Highlight Objects.
Exploring Coastal Explorer manual does not mention Highlight Objects at all.
RVZephyrRon is correct. It dims the nautical charts so other things are easier to see, such as the things you create: routes, marks, range/bearing lines, etc. It also makes things like tide and current stations easier to see against the detailed background of a chart.
The thing that stumped me, was the lack of clarity about exactly what an “object” is.
I tried “highlight objects” yesterday as we made a hop across the bay, on our way back to our home marina. I like that presentation, as it helps me focus on AIS targets, which is how I most often use CE, since I like the CE AIS display much better than on my chartplotter.