# Creating a Zoom Window

Navigation: Working with Nx Witness > Layout Management > Arranging Item Display in Layout > # Creating a Zoom Window |

With the Zoom Window feature in Nx Witness , when you select a rectangular region in an Item's display, Nx Witness instantly opens that selected region as a new item in the current layout. This lets you simultaneously view an entire device image and a zoomed-in detail. You can create as many zoom windows as you like from a given item, and these zoom window items will be saved in the layout. Zoom windows can be very helpful for viewing fish-eye c amera output (s ee "Dewarping Fish-Eye Cameras").

The zoom window region on the source camera is persistent and editable. It can be resized in the source item by dragging a corner and it will dynamically adjust in the related zoom window, and it can be moved between c ameras in a layout. When you close the item created by the zoom window, the zoom window region in the source item will be deleted.

To configure a zoom window:

1.Select a camera item.

2.Click on the Create Zoom Window icon , then drag a rectangle on the desired area. A new item will open in the current layout.

3.To close a zo om window, close the item it created.