What is the most logical next event?

How to use a mandoline
Prop the mandoline on a cutting board.
Fold out the mandoline's legs and place them on a sturdy, dry cutting board. The mandoline should never wobble or slip during use.

Select from the following.
(I) All mandolines work better if you lay them on a cutting board. Consider decorating your mandoline in some light decorative finishing spray for an added shine.;
(II) It should be balanced against the handle of a paper cutter fitted with a long toothed file. If you're using stainless steel, the mandoline should have a sharp edge, like a sharp driver's blade.;
(III) Scrape off the sanding dust from the mandoline's legs. If there is any sanding dust remaining on the legs, scrape it away by gently scraping away with a tiny knife.;
(IV) Make sure the cutting board is clean, as it will come into contact with the chopped food. Face the mandoline perpendicular to you.;
(IV)