It would be very bad if the only documentation of the default values 
			for characters in the files were in comments.
		
			
		
		
			My presumption is that any default value that is not in an @missing 
			is marked explicitly on elements in the file. For example, 0590 
			below. If that is the case, we should document it in UAX 44. If not, 
			then Houston, we have a problem.
		
			
		
		
			DerivedBidiClass:
		
		
			
		
		
			
				# Bidi_Class=Right_To_Left
			
				
			
			
				0590          ; R # Cn       <reserved-0590>
			
				05BE          ; R # Pd       HEBREW PUNCTUATION MAQAF