E.g. -2, -1, 0, 1, 2 etc. – zero refers to current column/row, negative integers refer to previous columns/rows and positive integers refer to subsequent columns/rows.

E.g. in a calculation of difference between 2 columnstherow reference will be 0 – meaning the calculation must be done in the currentrow. Example: sum(d-1, 0, m1) – sum(d-2, 0, m1)

E.g. in a calculation of totals per column the columnreference will be 0 – meaning the calculation must be done in the currentcolumn. Example: sum(0, all, m1).

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