NorthStar 8000i System Operation Manual page 64

All of the chart views except Local View are global (meaning that your stored
settings or any changes that you make to those settings are applied to any display
unit that's showing the same chart view as you).
Local View is a general purpose chart view, and any changes that you make to the
Local View settings are shown only on your Chart screen.
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Northstar 8000i Operation Manual