SYNOPSIS

                $cell = $myworkbook->worksheet->{Cells}[$row][$col]
                my $type       = $cell->{Type}; # Date, Text, or Numeric
                my $disp_value = $cell->Value;  # displayed (formatted) value set in XLSX by $myFmt2007->ValFmt($cell, $workbook)
                my $fund_value = $cell->{Val};  # fundemental (underlying) value
                my $formatter;
                if ($myworkbook->excel07) {
                        $formatter=Spreadsheet::XLSX::Fmt2007->new();
                } else {
                        $formatter=Spreadsheet::ParseExcel::FmtDefault->new();
                }  
                my $format_string = $formatter->FmtString($cell,$self->workbook);