Which help file do you mean - have you read the manual or watched the tutorials (which show resizing)?
see
www.ac3d.org/manual
and
www.ac3d.org/ac3d/tutorials
resizing is covered in the movie at:
http://ac3d.org/ac3d/tutorials/Getti...esizemove.html
Nearsnap works in three dimensions and will only snap to a point if it is near. It is used when drawing lines/polys/polylines only.
Andy