X				O

	the mark of failure 			a red X				0 points

	the intended target			X marking the spot		Os within Os

	the ends of a black olive		the pinched x			the pitted o

insect sex-determination system	XX (the female)		X0 (the male/ 
									Mark the 
 									absence)
						yes          no	
	is the letter symmetrical?		[X]  [   ]			yes	no				

	measured transmission		- - - (like a flatline)		- · · – 
										(… Oh…)

	the measure of a note			unmarked beat			whole note

	or eggs					near homophonic		near shape	

	or spacecrafts				X-wings (not real)		O-ring seal 
									         (the Challenger 
										disaster)	

	as a button			         cross-stitch to hold		the holes

	torturous execution		 Saint Andrew’s Cross		Catherine’s wheel	
					      			 (St. Catherine of Alexandria)		
	

	marks on the eyes of the dead	      scrawled Xs 		coins to pay Charon	





	X__________ (a sign here)

							O........................ (a sigh here)



X:	cross me out