Astrological sign of a sign are together sufficient to define it, they can be grouped to indicate their symbolism. The first four signs, Aries, Taurus, Gemini and Cancer, form the group of personal signs. The next four signs, Leo, Virgo, Libra and Scorpio form the group of interpersonal signs. The last four signs of the zodiac, Sagittarius, Capricorn, Aquarius and Pisces, form the group of transpersonal signs. Dane Rudhyar presented the tropical zodiac primary factors, used in the curriculum of the RASA School of Astrology. The tropical zodiac is the zodiac of seasonal factors as opposed to the sidereal zodiac (constellation factors).
Elder Sign described ("the farmer and his wife would only make the Elder Sign and tell him the way to Nir and Ulthar"). Lovecraft loosely described an Elder Sign only once in his writings, as given by the aged alcoholic Zadok Allen in "The Shadow Over Innsmouth" (1936): "In some places they was little stones strewed abaout—like charms—with somethin' on 'em like what ye call a swastika nowadays. Prob'ly them was the Old Ones' signs." In this story, the sign is used as a defense against Deep Ones, the story suggesting that the Deep Ones cannot harm someone protected by an Elder