Giving custom names to assets can make them easier to manage.
In Assets Files view, double-click the asset name to display the File dialog.
Type a new name in the Name field and click OK.
You can also edit the location directly in the File dialog. For example, you could enter a URL instead of a file path to point to a dynamic image on a server. Such images, however, are represented by an X in Page view, because the asset is not accessible.