And finally, the right side slider moves, extending or reducing the range of the end of the zoomwindow by 1 sampling interval.
最后，右滑块移动，将缩放窗口的结束范围扩大或缩小1个采样间隔。
2
When the left slider has the focus, the arrow keys will move the starting boundary of the zoomwindow by 1 interval left or right.
当焦点在左滑块上时，箭头键会按1个间隔向左或向右移动缩放窗口的起始边界。
3
When the focus is on the center slider, you can use the arrow keys to scroll the zoomwindow left or right 1 sampling interval without changing the size of the zoomwindow.