Edimax Technology PT-31W - Manual (Page 103)

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You can click ‘Save as’ button to save current image (you’ll
be prompted for image saving location), or click ‘Print’ to
print current image to printer.
To back to previous menu, click ‘Cancel’; click ‘Reset’ to
reset image parameters back to default value.
Time Current time will be displayed here.
You can click ‘ button to display video zoom in, or click
button to display video zoom out.