voronoi/atom

Hi,
In the compute voronoi/atom command, how are the neighbors defined ? I think they are defined by the atoms contained in a sphere of radius equal to the pair_style potential cutoff + neighbor skin, but I’m not sure because of the sentence « Any point in an atom’s Voronoi cell is closer to that atom than any other » (this appears in the compute description), which would be true only if the cutoff is the first neighbor distance (for a crystal). Thank you,

Paule