Returnstar Interactive Tech IQTouch L Pro Series, User Manual

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(7) Change background: click icon to change the background of the
whiteboard.
(8) About: click icon to learn about the version information of the whiteboard.
(9) Exit: click icon,When the whiteboard has contents, the pop-up prompt to
exit the whiteboard is: are you sure to exit the whiteboard or save the file? according
to sure or exit selection to carry out functional operations;if there is no content on the
whiteboard, click exit whiteboard to exit directly;