: Those teleporters actually do something - they take you to another section of
: similar diamond shaped rooms. Surely you noticed the pattern buffer in one
: of them. If you look in map mode, you'll see exactly what's happening and
: that you're physically transported to a different place. On the far wall
: opposite the PB is the switch you're looking for.
Well...somewhat. Some of the teleporters do very little (send you to the same room). There's one teleporter, however, that sends you to that second set of rooms (I think it's on the wall opposite the two that fail to teleport you, but I'm not sure).