Watermarks are very useful when documents need to be printed out in a secure manner. Watermarks can describe confidentiality, intended recipients, and even the quality of the document, like a draft, so that the reader is fully aware of how the document
Read More...
Read the complete post at http://blogs.technet.com/tarpara/archive/2008/10/13/tip-of-the-day-excel-2007-how-to-add-a-watermark-to-a-spreadsheet.aspx