https://developer.apple.com/documentation/appkit/nsalert/style?language=objc
NSAlert.Style | Apple Developer Documentation
The set of alert styles to style alerts in your app.
apple developerstyledocumentation
https://nsalert.alertable.ca/
NSAlert: Nova Scotia Emergency Alert
Alertable provides a smart alert system to notify Canadians. Sign up today for severe weather, floods, tornados, wildfires, and local community notifications.
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