The Handbook
is a ball game for .

How To Play
is played on a field, surrounded by a wall, with two or more balls that move about in the field bouncing off of the walls.
Walls are a darker color while the active areas of the field are a lighter color.
The size of the active area of the field is decreased by making new walls that enclose areas without balls in them. To complete a level, the player must decrease the size of the active field by at least 75% within the time allowed.
With each new level, another ball is added to the field, and the player is given one more life than in the level before. The time allotted to complete the level is also increased.
Scoring is based on how much of the field is cleared.
New walls are built by clicking the left mouse button in an active area of the field, at which point two walls will begin to grow in opposite directions from the square the mouse was clicked in. Only two walls may be growing on the screen at any given time.
A new wall growing
A new wall growing
When the mouse is on the field, the cursor is shown as a pair of arrows pointing in opposite directions, either horizontally or vertically. The arrows point in the direction the walls will grow when the left is clicked. This direction can be changed by clicking the right mouse button.
A new wall has a head which moves away from the point where the mouse was clicked. A wall is not permanent until this head runs into another wall. If a ball collides with any part of the wall except the head, before the head has run into another wall, the new wall will disappear completely and one life will be lost. If a ball collides with the head in the direction of the wall's growth, the wall will stop growing there, and become permanent, with no loss of life. If a ball collides with the head from any other side, the ball will bounce off and the wall will continue to grow normally.