Web excelcalendar.com

   The expanse of Excel, as "spreadsheet" implies, is fully used   
    to store and locate data.   
   Each cell on its sheet is addressed by the column and row,   
   so it is easy to locate the cell with its address (e.g. A1).   

   The number of columns on a single sheet is 256 and rows, 65,536.   

   Excel cell locator - Google Search lists websites giving ideas on   
   how to understand and use "Excell, whoops, Excel cell locator".   


   Here is Excel Cell Locator.

- September 7, 2006 -

   On the spreadsheet is the chemical "Periodic Table" .

- December 4, 2007 -

Now in  Google Spreadsheet
  
- December 7, 2007 -

      

Reference

How to extract unique values from a list	06/09/07
How to rotate text at an angle
How to validate data using a list
Google & Excel