- bi-quadratic quadrangle will be split into 4 linear quadrangles;
- tri-quadratic hexahedron will be split into 8 linear hexahedra;
- quadratic segments adjacent to the split bi-quadratic element will
- be split into 2 liner segment.
+ be split into 2 liner segments.
\image html split_biquad_to_linear_mesh.png "Mesh before and after splitting"
