(1) Accessories are movable things that, without being parts of the main thing, are intended to serve the economic purpose of the main thing and are in a spatial relationship to it that corresponds to this intention. A thing is not an accessory if it is not regarded as an accessory in business dealings.
(2) The temporary use of a thing for the economic purpose of another thing does not give it the quality of an accessory. The temporary separation of an accessory from the main thing does not deprive it of the quality of an accessory.