| IfcEntity | I | IfcProject or another object from IFC database | Generic Data | 
| StartDistance | D | Distance along the horizontal alignment as measured along the corresponding IfcAlignmentHorizontal. | Number | 
| HorizontalLength | L | Length measured as distance along the horizontal alignment of the segment. | Number | 
| StartCantLeft | S | StartCantLeft | Number | 
| EndCantLeft | E | EndCantLeft | Number | 
| StartCantRight | S | StartCantRight | Number | 
| EndCantRight | E | EndCantRight | Number | 
| Shape | S | Shape Predefined type of the horizontal alignmnent segment (0=CONSTANTCANT 1=LINEARTRANSITION 2=HELMERTCURVE 3=BLOSSCURVE 4=COSINECURVE 5=SINECURVE 6=VIENNESEBEND) | Integer | 
| StartTag | T | Start Tag | Text | 
| EndTag | T | End Tag | Text |