Adjusting your image with GUI
Digital menu deals with various digital image processing function.
Allow to keep the current image on the screen. Click[Freeze] menu with the left mouse button, freeze mode is
activated and [Freeze] menu turns checked state. To release freeze mode, click [freeze] menu again or click
[Cancel] menu with the left mouse button (and then [Freeze] menu turns unchecked state).
Allow to rotate the image by 0˚(Off), 90°, 180°, 270°. Click [0°/90°/180°/270°] menu with the left mouse button,
image is rotated by user's request and menu turns checked state following current status of image.