LitioLAB is an advanced, complex-shape, mathematical drawing tool for ZwCAD, that draws complex shapes (either 2D curves, 3D curves or 3D surfaces), that are not available as standard ZwCAD commands.
LitioLAB can also import XLS sets of point coordinate data and insert them as ZwCAD entities in your drawing. 

Examples of non-linear, non-circular engineering and/or architectural applications can be:

• Building arches, suspension Bridges, catenary curves, gear profiles, helical augers, airfoils [cross sections of wings] or of ship hulls, Wankel engine epitrochoid housings, ammunition and missile warheads, projectile motion [oblique throw], and Lissajous curves are some more examples.
• Further examples are also, Simple harmonic motion, Fourier series, space orbits, Guilloché patterns, harmonograph figures, mathematic roses, Rosetta orbits, Roulette curves, Tusi couples, filigrees, spirals, hypotrochoids and epitrochoids, etc. All they follow mathematical principles and formulas.
• Actually, any physics or engineering phenomenon can be expressed mathematically.
• Another possible and obvious use is… Function Analysis in Calculus.