13 lines
		
	
	
		
			149 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			13 lines
		
	
	
		
			149 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
-f - balance -p 'in 2009' --effective
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<<<
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2009/1/1 x
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  a  1
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  b
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2009/1/1=2010/1/1 x
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  a  10
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  b
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>>>
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                   1  a
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                  -1  b
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