Absorption: If a jet meets an atom directly, it is absorbed. The jet does
not exit the box anywhere, and the starting point becomes gray. This is
shown in the diagram by the red jet from point 12.
Diversion: If a jet enters the diversion range of an atom, it is reflected.
The diversion range is the four spaces which lie diagonally around the atom
(with the atom, they form a kind of X). If the jet enters one of these four
spaces, it is diverted away from the atom. In the diagram, for example, the
jet from point 21 is diverted to point 10.
Reflection (I): If a jet comes into the sphere of influence of two atoms so
that it would have to be diverted both to the left and to the right, it is
instead reflected in the direction from which it came. For example, the
jet from point 8 in the diagram is reflected and returns to point 8.
Reflection (II): There is a second way a jet can be reflected. If a jet is
sent into the black box if a diversion field from an atom on the edge of the
box blocks the entrance. The jet from point 31 is thus reflected, due to the
atom directkly in front of point 32.