Xmark is so appropriate. X marks the spot and the spot is the mark of the beast. It is a BLACK mark. He also gives a very interesting study on words that end in X. (lynx, fox, box, ax, pax, xerox, styx, sex, pox, jinx, faux etc.) The antichrist is a cat (as in lynx), but also a Leopard marked with BLACK spots. His letter will be X and his mark will be a black spot, according to Dr. Ruckman.He believes he will be a half-breed syrian jew. He will try to bring about a false peace (pax). He will jinx the entire world and cause them to take a mark which will give them a grievous sore (pox). Judas betrayed Jesus with a Kiss. Thus - when you sign letters to someone with a kiss, you put xxxx on them. Jesus called Judas Iscariot a "devil" and said he returned to his own place. Judas may possess the antichrist. I recommend the book to anyone interested in more details.