Tricking

Tricking is a method for indicating the tinctures (colours) used in a coat of arms by means of text abbreviations written directly on the illustration. Tricking and hatching are the two primary methods employed in the system of heraldry to show colour in black and white illustrations.

Tricked arms of John Browne of Spexhall, Suffolk (1591)
An example of early tricking. Coat of arms of Cardinal Giovanni di Aragona (1456–1485), archbishop of Esztergom