Introduction to the SOUSA interface
In order to collect data for your programming project, you will be using a data collection system called SOUSA. The SOUSA interface contains several features that will be useful in sketching your input data.

- Drawing panel. The large white space for sketching the data.
 
 
- Preview image. Shows what you need to draw.  Click the image  to increase the size.  The larger size will appear on the right side of  the web page.
 
 
- Clear button. Clears the entire drawing panel.
 
 
- Next button. Saves the drawing and continues to the next image to sketch.
 
 
- Undo button. Deletes the newest stroke.  A stroke is the pen input from pressing the pen to lifting the pen.
 
 
- Redo button. If you hit delete a stroke with the undo button, then redo will un-delete the stroke.
