I cannot find the Option that may be causing this. If I send the spreadsheet
to another system there is no problem typing the number "13" (does not
automatically change to "14"), and in fact when the spreadsheet is returned
to my sytem, the "13" still exists. But when I data enter a "13," it will
automatically change to a "14." I have checked for a formatting issue, and
even selected cells and then used Edit, Clear, All to remove all formatting,
but still get the 13/14 input error.