As well as the two input images, a composite of the current alignment is also displayed below them at the current view settings described above(normal size,zoomed,fitted to window).
Using the left,right,up,down arrow-keys the image may be moved horizontally to increase/decrease the stereo disparity and vertically to eliminate disparity errors.
The left-arrow key moves the images towards each other, the right-arrow key moves them away from each other.
The images may be Zoomed-in for greater accuracy, particularly when reducing vertical disparity error.
The 'x' and 'y' values of the position alignment are displayed together with the image size (in pixels) after the necessary cropping.