ssize_toffset;// When split occures, we need to infer an offset in indexing
ssize_tdepth;// The tree depth
ssize_t*arity;// Number of children per node on each level
ssize_tleaves;// Number of leaves
ssize_t*nleaves;// Number of leaves below each level
ssize_toffset;// When split occures, a resulting chunk can be offset as a subtree of the original one.
ssize_t*strides;// When split occures, indexing might not be contiguous anymore, the stride is applied by level. It shall be increased by 1 on level where split occures.