Opening and closing cereal boxes, cookie packages, books, etc. with letters, numbers, pictures printed on them.
Is There a Time When it Does Apply to Food;
understanding the two views with "דרך לכלוך" (coloring destructively). (Wiping one's hands on a towel from grape juice, blood, pomegranate, colored ices, etc.);
is one allowed to leave the food in the bag after being opened;