dab is a game where each player tries to complete the most boxes. A turn consists of putting one border
of a box; the player setting the fourth and final border of a box gets the point for the box and has
another turn.
The keys used are the vi keys: k for up, j for down, h for left, and l for right. To switch between even
and odd rows, use one of the following keys: u (diagonal right up), y (diagonal left up), b (diagonal
left down), n (diagonal right down); ⟨space⟩ sets a new border, CTRL-L and CTRL-R redraw the screen, and
q quits the game.
Support options are:
-a Don't use the alternate character set.
-nngamesngames games will be played. (Especially useful in -pcc mode.)
-p ⟨c|h⟩⟨c|h⟩ Select which of the two players is a human or a computer. The first argument is the
first player; c stands for computer and h for human.
-w Wait for a character press between games.
xdim and ydim define the size of the board in the x and y dimensions.