The Layers table (located on the left side) of the FAB 3000 editor window can be hidden or restored - depending on your viewing requirements. That Layers table which also includes "Stackup" and "Applications" is referred to as the Design Navigator.
1. Go to menu: Setup | Customize...
2. Select tab "Toolbars"
3. To hide uncheck "Design Navigator". Check to restore back.
Please view the following quick movie demonstrating how to hide and redisplay the Design Navigator.
Windows only: All FAB 3000 display settings are stored in the Registry
If for any reason (tutorial above) does not restore the Design Navigator, there are several options: