# Last edited on 2011-11-04 17:25:50 by stolfilocal

{Four-dimensional glovebox} for topology, unknotting, 
non-destructive inspection, stereochemistry, manufacturing, etc.

Hand-drawn by {J.Stolfi} on 2011-11-04, with a Pilot V5 ballpoint (black
0.5mm) on copier paper, actual drawing size about 15×11 cm; photographed
with a Kodak Playsport and cleaned with Gimp.