Egyptian Magic in Egyptian Magic by Florence Farr.
“Behind her is her KA or real Ego; the hands, lifted in aspiration above the head, enclose the rectangular parallelogram representing the Portal of Wisdom in which is written the HORUS or heroic Name which according to Egyptian dogma was to be won by the Theurgic rites of Initiation. On it is seated the Royal HORUS BAIE.” [via]