ct, this work is done for you; the Spreadsheet will be called by the evaluator, returning the values of cells as needed. (The spreadsheet returns zero for empty or unallocated cells.)</P>
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Note that while the cell library numbers both rows and columns starting from zero, the Parse library numbers rows starting from one. This is because historically, spreadsheets have had the first row be row number 1. Therefore, if the parser encounters a reference to cell A1, it will translate this into a cell reference