The idea is that windows are documents, not the whole application. You can close all of the documents. Then you can start a new document, open an existing docum

The idea is that windows are documents, not the whole application. You can close all of the documents. Then you can start a new document, open an existing document or quite the app. Someone who has worked with Macs for a while will just close the app with CMD-Q or use the menu. It seems weird to have to close the individual documents to close the app. Many of my apps are setup to reload the same documents when the app restarts do quitting the app doesn’t abandon the documents, it just files them away until the next time the app is opened. There are non-document oriented apps that only use one window and when that window is closed, they are setup to close the app. You obviously spent a long time on Windows where the windows were the app and closing the window closed the app. Documents are secondary.