




When you first start the Interface Builder, a new interface is created for you automatically. You can also choose 
File > New
 or click on 
 to create a new interface. A blank window, known as the 
interface skeleton
, appears on-screen, as shown in Skeleton window. The interface skeleton contains no layouts or panes, or menus. 
You can use 
File > New
 to create as many interfaces as you want; they are all displayed as soon as you create them. Since you can only work on one interface at a time, use the 
History > Items
 submenu or the 
 and 
 toolbar buttons to switch between different interfaces that are currently loaded in the Interface Builder.
As an alternative, type the name of an interface directly into the Interface text box and press 
Return
 to create a new interface, or to switch to an interface which is already loaded.