#comment with "#"
#caveat : no lone active keyword is allowed in comments
#sphere centerX centerY centerZ radius discretization
#sph 0.0 0.0 0.0 0.1 5
#cylinder startX startY startZ endX endY endZ radius discretization closed_or_open
#cyl 0.0 0.0 0.0 1.0 1.0 1.0 0.05 5 1
#helix (2 revolutions, fixed step) R r discretization1 discretization2 
#helix 1.0 0.3 100 5
#stl loads a .stl file
stl test.stl
#tol sets the tolerance when merging entities (e.g. very close points)
#tol 1e-20