It often occurs to me to clear a general ledger. What happens here is that positive numbers are booked in column A and negative numbers in column B. In the end I'm dealing with hundreds of rows that book out each other (i.e. 500 left and 500 right = (+500-500=) 0) and I'm looking for lines that are not canceled ( and therefore remain open). I was wondering if someone has a way that this can be filtered automatically very quickly so that when I open such a table I can immediately extract what is open.