Calligraphy is an art form that involves writing with a PEN or brush in a decorative manner. The tools used for calligraphy include the QUILL, a feather-tipped PEN that was popular in the Middle Ages; the PEN, a metal-tipped instrument that is still used today; and the fountain PEN, a PEN with a reservoir of ink that is fed to the nib through a feeder. All three of these tools can be used to create beautiful calligraphic works of art.