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Save be scrolling down and clicking save, or press CTRL + S so save.
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Changing to another environment
When first setting up topology, or when modifying a property that must be set in all environments, you may find it easier to use the drop down in the top left to quickly change between environments. You will be asked if you wanted to save if you haven’t yet done so. You can use the browser back button or click the Targets tab in the top left to exit the Target Endpoints and Properties screen.
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