\<3D curve record 5\> describes a hyperbola. The hyperbola data consist of a 3D point *P*, pairwise orthogonal 3D directions *N*, *D<sub>x</sub>* and *D<sub>y</sub>* and non-negative reals *k<sub>x</sub>* and *k<sub>y</sub>*. The hyperbola is located in plane which passes through the point *P* and has the normal *N*. The hyperbola is defined by the following parametric equation:
\<3D curve record 5\> describes a hyperbola. The hyperbola data consist of a 3D point *P*, pairwise orthogonal 3D directions *N*, *D<sub>x</sub>* and *D<sub>y</sub>* and non-negative reals *k<sub>x</sub>* and *k<sub>y</sub>*. The hyperbola is located in plane which passes through the point *P* and has the normal *N*. The hyperbola is defined by the following parametric equation: