There seems to be a magic door in the X-8 facility in OWB.
Most of the tests you can take there, involve downloading info from terminals in the high school. You always start out in the high school lobby.
However with the Residential Guard Dog Test(IIRC) you walk through the same door, into a cave room instead. This is where you meet Gabe.
But these two rooms can be observed from above, via the hallways on the second floor, and they are clearly separate from each other.
So is this a magic door, or am I missing something?