In CADprofi program schematic lines are being drawn with lines or polylines which are located on appropriate layers. The term "line kind" means the line or specific system purpose (such as supply line in a heating installation or a supply air line in the ventilation system). Lines may also be given a type, which defines their physical properties (e.g. DN15 for steel pipes, Cu15x1 for copper pipes etc.). Line type can be specified during the drawing or at any time after user has drawn the lines (with the Schematic lines – edit command).
Standard kinds of lines are grouped into appropriate categories. User also has the possibility to define additional kinds of lines.