Computer software for mobile devices that emulates a magnifying glass

Crayons; Pencils; Ballpoint pens; Boxes for pens; Card drink coasters; Colour pencils; Colouring pencils; Gel pens; Graphite pencils; Marking pens; Mechanical pencil refills; Paper stationery; Pen cases; Pencil cups; Pencil erasers; Pencil extenders; Pencils with erasers; Refills for ballpoint pens; Sheets of paper for taking notes; Charcoal pencils