Item lists are general plans showing the positioning of a structure in individual structural components.
In item lists, the item descriptions are defined as binding. Furthermore, it shows and defines the individual calculations of a structural analysis in the context of the entire structure. For this, an item list and a structural analysis must always be absolutely consistent with each other.
A position refers to all individual structural components and is given a unique description, the so-called position number. It can consist of an ascending numbering or letters and serve to explain the structural planning of the structure.