You can use the object list to specify which type of object you want to see. If the Object Browser is empty, click the Show/Hide Library Objects button to show the library objects. The button appears on the toolbar and Object Browser.

You can tell that an object is a library object because, by default, it has the library name in front of the object name. For instance, the fourth entity in the preceding graphic is OBAS400/Entity With Direct Format, which means that this entity comes from the OBAS400 class library.