6. The computer product of claim 5 further including computer readable code configured to cause a computer to displace said m-1 fields within said display region a distance h in a first direction when a first button is clicked.
6. The computer product of claim 5 further including computer readable code configured to cause a computer to displace said m-1 fields within said display region a distance h in a first direction when a first button is clicked. 8. The computer product of claim 6, wherein said first direction is towards said first end of said display region.