This is in Pre-Pre-Alpha. Move with the arrow keys or WASD, or both for double speed. All you can do is walk around the small map, more coming soon. Debug Mode can be activated with K, and disabled with L.
This design is infinitely expandable, as the screens are stored in a grid-like pattern. You start on the screen with data (0,0), or the origin of the graph. There are four screens, one to your left, one above you, and one diagonally above you.