The control has a color bar showing the active color table and the associated high and low data values in the units the display is made in. As the mouse pointer is moved over the color bar, the value at a particular color is shown. Click on the color bar to start the Color Table Editor. Or click on the button that displays the name of the color table to show a popup menu that allows you to change the range, select other color tables, etc.
This slider allows you to set the vertical position of the Image.
Adjust the Pixel Sampling slider to change the
resolution of the image. A larger number makes a lower resolution
(coarser) display.