The boom comprises a movable boom (20) and a base boom (10).

The auxiliary boom comprises a truss boom (10) and a box-type boom (20) arranged in the truss boom.

The pendant support system at least partially supports the boom when a load is applied to the boom.

The transaction is designated to the arrow after analyzing the graphic object and the arrow to determine if the transaction is valid for the arrow (106, 107).

The support includes a boom pivot about which the boom is rotatable, the machining station being mounted on the boom remote from the boom pivot.

The first shaft portion of the arrow may comprise a lengthwise segment of the arrow shaft terminating at an end of the arrow shaft adjacent to the arrow nock.

The second shaft portion of the arrow may comprise a lengthwise segment of the arrow shaft terminating at an end of the arrow shaft adjacent to the arrow point.

The flashing yellow arrow is located between the solid yellow arrow and the green arrow on the signal head.

Furthermore, the second arrow may be used to modify the transaction for the arrow.

The transaction may be validated or invalidated for the arrow using a second arrow.

  Fixing the lower end section of the ascended boom (12) and the upper end section of the boom (11) to each other enables the boom (12) to be maintained extended relative to the boom (11).

To this end, a main hook (21) is provided on the base boom (61) of a second boom (6), and an auxiliary hook (22) is provided on the distal boom of the second boom (6).

The extending boom includes boom sections (14, 16) that are extensibly receivable within the adjacent boom section (12, 14).

The jib head is fixedly installed on an upper end of the jib.

A first drive member is mounted between the short boom (1) and the endmost boom.