This element is used to assemble dynamic piece lists, with the sub-positions assigned to rules that determine depending on the option in which quantity the respective position exists in the piece list.
Only items in a corresponding series or items of series 0 are contained.
A contained item may however contain a piece list.
The item that contains a piece list passes on its options (OPTIONS) to the sub positions if these have identical features (FEATURES) in the feature class associated with the respective sub-position.