{
// Determine the size of cubes where there are on average 10 positions.
// The loop takes care of cases where some of the box edges are shorter
- // than the the desired cube size; in such cases, a single grid cell is
+ // than the desired cube size; in such cases, a single grid cell is
// used in these dimensions, and the cube size is determined only from the
// larger box vectors. Such boxes should be rare, but the bounding box
// approach can result in very flat boxes with certain types of selections