Which can be found in the Outpost shows the locations of various secrets hidden within the station.
Unlike the diskettes/unlockers/keys/signs these hidden rooms (apart from 06-17) seem to serve no real purpose other than the fun of discovering them after playing the game through (perhaps several times already).

Here's the map drawn over the map of the station, along with a little extra:

Upon entering the teleporter in the ruins, your map loses signal and is unable to track your location. You can still view your coordinates in the "status" screen, which shows that upon arrival you're located at somewhere in the bottom left corner.
Mapping these areas properly is difficult, since the areas are inconsistent and you can jump over great distances while transitioning between rooms. The maze, located in the top left corner has little to no consistency at all.

I thought of simply posting this in the artwork section, but people could've accidentally run in to spoilers there.

The image is made by me, but it isn't the first of its kind, other users have already done about the same thing in the discussions section.

Note that this map is not complete; there are still areas that can be discovered and marked on the map.
Maybe areas I've never found myself, too.

So keep your eyes open and have fun seaching for more secrets!