Settings in Excel 2013
Excel 2013 automatically creates one worksheet in each new workbook, but you can force it to create as many worksheets as you need.
Normally, cell comments are rectangular, but you can give a cell comment any shape you want:
If you are creating chart or diagram in Excel with shapes, you might need to update the shape text automatically depending on the value in a particular cell.
Like in version 2010, number of Undo levels in Excel 2013 is 100 - the biggest number that can be used.
Excel includes a variety of built-in formats that cover general, numeric, currency, percentage, exponential, date, time, and custom numeric formats. You can also design your own custom formats based on one of the built-in formats.
You can greatly reduce data-entry problems in your workbooks by making Excel check entries before entering them in specific cells. To do so, you need to define restrictions and data-validation rules for those cells.