The RSX program is used to calculate the cutting forces and support forces for general bar-shaped load-bearing structures as 2D or, optionally, 3D systems. The graphical input with templates and wizards quickly provides a calculable system. The initial values for a design for steel, timber, reinforced concrete or aluminum are provided with the fully automatic superposition. Eigenvalues and eigenmodes can be calculated for dynamic investigations. The scope of performance depends on the purchased add-ons.