|The following is based on developer test content cut from Fallout 3 and has not been confirmed by canon sources.|
The console commands to enter these rooms are COC <cell name>, as it can only be accessed by console commands it must also be exited this way (i.e. COC DLC05EngineCore).
DLC05TestJeffB is a very large empty cell that features no items or buttons. There are many duplicated sets of stairs, large open areas, tight hallways, and both types of sliding and iris doors.
Behind the scenesEdit
This test cell is by level designer Jeff Browne.