E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Points of the Escutcheon.
There are nine points distinguished in heraldry by the first nine letters of the alphabetthree at top, A, B, C; three down the middle, D, E, F; and three at the bottom, G, H, I. The first three are chiefs; the middle three are the collar point, fess point, and nombril or navel point; the bottom three are the base points.