This is an excellent packet trick that is well within the reach of beginners (like myself), an there
is a fractal version which allows you to end clean as well.
I'm deducting one star because the
instructions are DRM (Vimeo) with no download button. Yes, I'm aware there are "workarounds" for
this if you really want to have the instructions on your computer despite the the creator and/or
publisher doesn't want you to have this option. This really puzzles me since I don't see how it
provides any protection to the creator. It is certainly legal enough to provide a password to a
buyer if you wish to sell or give away (and not legal to provide a copy of a download).