Various method embodiments detect a concurrent therapy, where the concurrent therapy includes a plurality of therapy pulses. The method identifies a target photographic image to be requested, wherein a description of the target image is derived from the metadata of the stored image and includes a target location and a target orientation. This is achieved by the fact that the roller is mounted capable of turning on one end of two two-arm levers, that the two-arm levers are mounted capable of turning on side parts, and that a cross-connection is located at the other ends of the two-arm levers, with which at least one force-generating element engages. Some embodiments contemplate the hosts executing a plurality of virtual machines accessing logical unit numbers in a storage area network. A ball launched into the playing field may fall into a pocket. Alternative embodiments are described to reduce the number of optical components and to provide uninterrupted high speed data flow.