text: Spreadsheet::WriteExcel::FromXML::Workbook
  # inner class for use by FromXML
  Workbook object for FromXML.
  Consturctor for Workbook object.
  Creates a new report buffer, file handle and Spreadsheet::WriteExcel object.
  Param: title - title for the worksheet that people will see in the Excel spreadsheet. Return: void
  Creates & adds a new worksheet to the spreadsheet. It keeps track of the order the worksheets were added and a hash table so one can easily reference them later.
  Param: name - hash table namespace for the worksheet. Return: Worksheet object associated with name.
  Accesses the hash table of worksheets and returns the worksheet with the specified name.
  SpreadSheet::WriteExcel::FromXML
  W. Justin Bedard juice@lerch.org
  Kyle R. Burton mortis@voicenet.com, krburton@cpan.org