How do I place a structure outside of the visible area?

To enlarge the island image, the sides are cut-off by default, this may cause you to be unable to place your structures at the edge of the island. When this occurs, you can use the '-' key on your nummeric keyboard to make the island zoom out by 2 percent each time you press the key. With the '+' key on your nummeric keyboard, you can zoom in by 2 percent.