| Class Summary | 
| CSV | Simple demo class which uses the api to present the contents
 of an excel 97 spreadsheet as comma separated values, using a workbook
 and output stream of your choice | 
| Demo | The main demo class which interprets the command line switches in order
 to determine how to call the demo programs
 The demo program uses stdout as its default output stream | 
| Escher | Displays the escher data | 
| EscherDrawingGroup | Displays the escher data | 
| Features | Goes through each cell in the workbook, and if the cell has any features
 associated with, it prints out the cell contents and the features | 
| Formulas | Goes through each cell in the workbook, and if the contents of that
 cell is a formula, it prints out the last calculated value and
 the formula string | 
| ReadWrite | Demo class which uses the api to read in a spreadsheet and generate a clone
 of that spreadsheet which contains the same data. | 
| Write | Demo class which writes a spreadsheet. | 
| XML | Simple demo class which uses the api to present the contents
 of an excel 97 spreadsheet as an XML document, using a workbook
 and output stream of your choice |