This is a major interface for numerical operations based on C-arrays. It is faster than lua tables, when lots of numerical work needs to be done, and allows to directly operate on built-in arrays (ie no copy operation needed) and makes use of SSE instructions for float operations. Data is multi-dimensional so 1D,2D or 3D data can be represented. The old staticarrays are superceded by this. Although for few elements and simple ops floatarray and intarray can be faster. ScalarArray? allows a lot of complex operations such as interleaving vectors, different datatypes... Also useful to access data from luxinia directly from other lua dlls.