An event is an action that takes place on a system level - showing or resizing a window for example, or the movement of a mouse. The Clip language recognizes four distinct events:
1. the opening of a Clipbook library;
2. the closing of a Clipbook library;
3. the Windows Clipboard receiving text;
4. and timer events that are triggered at defined time intervals.
You can execute Clip instructions when these events are triggered. Timer events are controlled with the "^!TimerPlay" command; the three other events are defined by creating Clips with the corresponding event name (OnOpen, OnClose, OnClipboardChange). When the event is triggered, the corresponding Clip is executed.