The codifying of tree-structure

A lever actuated ratchet wrench is disclosed herein and includes a handle, a ratchet component housing, a ratchet gear mounted within the housing for substantially 360 degree rotation in either of two opposite directions, and a lever connectable with the ratchet gear and movable between a first point and a second point for rotating the latter. A ratchet gear rotation control arrangement is operably positioned between the lever and ratchet gear and, in response to the movement of the lever from the first said point to the second point, alternatively rotates the latter in either of the two opposite directions depending upon the position of the rotation control arrangement. In addition, the rotation control arrangement is provided with another position so that the ratchet gear is prevented from rotating when the lever is actuated and, alternatively, allowed to freely rotate in either direction when the lever is maintained in its unactuated position.