events required what is
What is required events in Mac OS: graphical user interface should be able to respond to. These.

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required events definition

Explanation: Certain Apple events that all Mac apps that present a graphical user interface should be able to respond to. These events can be sent by the Mac OS, as well as by other applications and by users executing scripts. They include the open application, open documents, print documents, open contents, reopen, and quit events

More definitions for Mac OS users such as required events in Dictionary R.