Nac HotShot User Manual page 35

With this option select the grid automatically goes to the centre of the images and
highlights the centre pixel. Again click on the image will display the pixel values
around the area click with the area clicked being at the centre display of the grid and
the co-ordinates being displayed in the edit boxes above. A yellow cross hair will
appear on the image indicating the co-ordinates chosen.
Note to change the colour used on the image to show the user the area being viewed,
click the 'Cross-Hair Colour' box, a colour dialog box will appear and another colour
can be chosen. The default is yellow.
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