You can map single, nonrepeating XML elements to a merged cell, but mapping a repeating XML element (or an element that contains a repeating element) to a merged cell isn't allowed. The cell will be unmerged, and the element will be mapped to the cell

However, they are rarely used, so I am not going to discuss them in this tutorial. If you want to map a user defined collection interfaces, which is not directly supported by Hibernate, you need to tell Hibernate about the semantics of your custom collect

Image Maps. The HTML <map> tag defines an image map. An image map is an image with clickable areas. The areas are defined with one or more <area> tags.. Try to click on the computer, phone, or the cup of coffee in the image below: