The system is about to shutdown, do we have any unsaved data ?
| Parameter | Type | Mode | |
| The | MEL_Message_PreQuit | in | |
| Handle | |||
The Task manager wants us to quit.
| Parameter | Type | Mode | |
| The | MEL_Message_Quit | in | |
| Handle | |||
The toolbox wants us to quit.
| Parameter | Type | Mode | |
| The | TEL_Quit_Quit | in | |
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