Map can be scrolled and zoomed by cursor.
Zooming is possible both by mouse and scale bar on the top of the map.
To select tiles, enter the latitude N/S and longitude E/W to make a rectangle for your AOI. Or, when clicking each entry box and pointing on the map by cursor, the coordinates of the point are automatically entered in the box.
When clicking [Clear] button, the selection is cleared.
After specifying coordinates, click [OK] button.