When you close AceText by clicking the X button in the caption bar of AceText’s window, or by pressing Alt+F4, AceText’s window disappears. But AceText continues to run in the background. The icon in the system tray remains visible, hotkeys continue to work, and the ClipHistory continues to capture text.
To shut down AceText completely, right-click on AceText’s icon next to the system clock, and select Shut Down AceText from the icon’s menu. You can also select Shut Down AceText in the Collection menu of the main menu. AceText then stops running. It window and tray icon disappear. All its functionality stops until you start it again.