The following table shows the functions available to OS developers for the shell, with a description of the purpose of each.
| Programming element | Description | 
|---|---|
| BacklightAdvApplet | This function displays the Advanced Backlight dialog box when the user chooses Advanced in the Display Control Panel. | 
| DrvAdvPageSetupDlg | This function displays the Advanced Page Setup dialog box when the user chooses Advanced in the Page Setup dialog box. | 
| ShellRegisterCallbacks | This function registers callback functions through which the operating system (OS) forwards the SHAddToRecentDocs and Shell_NotifyIcon functions to a custom shell. | 
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