TW.app.quitOnLastWindowClosed
In Script this property reads and is writable. It does not quite do what some might expect.
TW.app.quitOnLastWindowClosed = false;
twPan.alert(TW.app.quitOnLastWindowClosed);
Works, and when the last window is closed Tw remains as a process with no Application interface.
Basically don't use - User would need to find the process and ill it if this were called as above, otherwise they would not be able to restart TeXworks until they rebooted.
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