There's a small opening in each square, where ever there's an opening that's the way you can go. And for direction it's east, west etc.

Adding on to what Yol said, if you press command (uth) and look at what you can say, depending on if there are doors to your right, left, top and bottom, different commands will appear. Brom (north) jer (east) wer (west) stum (south), typing in one of those commands -if they are there- will move you a spot.

dont know