There is much debate about the origin of the term ‘pi’. Some say it is from the sixteenth letter of the Greek alphabet and others say it is in reference to printer’s pie, the jumble of disorderly type that has been dropped from a printer’s fingers. The dictionary defines pi variously as: to spill or throw (type or type matter) into disorder; not intended to appear in final printing; capable of being inserted only by hand. These days the pi character or font generally refers to a mathematical or decorative symbol, Xmas Pi being only one collection of many. Pi font, symbol or special character, call it what you will, I’ll be enjoying my christmas pie tomorrow with a glass of good cheer.