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Enchiridion: A Greek-derived word for a manual or small book designed to be kept close at hand for constant use.
Attributed to Pope Leo III, who reigned from 795 to 816 AD.
Original: Carolo Magno, Charles the Great (742–814 AD).
A mystical circular diagram containing an inverted triangle. Outside the triangle, but within the circle, three words are written along the circumference: "formation" at the top, "reformation" on the right, and "transformation" on the left.
The vertices of the triangle are numbered: "1" at the top right, "2" at the bottom point, and "3" at the top left.
The interior of the triangle contains the following names of God and angels: