Also you can configure the behavior of the middle button's scrolling:
Scroll image up and down: when the image's height is larger than the screen the image is scrolled up and down according to the middle button's scrolling.
Zoom image in/out: This option enlarges or shrinks the image according to the middle button's scrolling. It works only if you have the mouse cursor above the image, and it focuses on the point of the image which is under the cursor; that is, the area around the point will be centered in the screen.
Scroll between frames: Displays the next/previous frames of a multi-frame file or series, according to the middle button's scrolling.
Mouse Sensitivity
Adjusts the sensitivity of the mouse when the user changes the level-window with the mouse. With a smaller sensitivity value, the user has to move the mouse a longer distance to make the same change in the level-window values.
OK button
Accepts the configurations and closes the dialog box.
Cancel button
Destroys any change of the configuration and closes the dialog box.
Help button
Displays this help content.