Heraldic courtesy orcourtoisie (French) is a practice typical of theheraldry ofGermany (or more generally the formerHoly Roman Empire), in which coats of arms are mirrored if necessary so that animatecharges, such aslions, face the center of a composition. This may be done in arms of alliance (displaying the two shields of a married couple),[1][2] as in the first illustration here; or within a single shield, such as that of the dukes ofGuelders andJülich in which the gold lion of Guelders turns to face the black lion of Jülich.