The invention relates to a system for bracing a telescopic crane, in particular a mobile crane, with a bracing unit which can be mounted on the jib. The plug connector includes ground contact members and signal contact pairs that are arranged alternately. The second and fourth supporting legs each include a lower supporting leg portion pivotally connected to the lower frame, and an upper supporting leg portion pivotally connected to the lower supporting leg portion by a pivot pin and slidably joined to the upper frame. The first cover section includes a first hinge mechanism and a first cover material. The energy-dispersive device is configured to introduce dispersion between the two components. The performing includes at least determining a total number of instances of at least one path-identifier associated with a given value within a given set of documents.