We're about to embark on a major change to the page. It's a good idea to make a backup of the page at this point so that if we mess things up, we can go back and start with that page rather than starting all over from the beginning.
1. Go to the File menu and choose "Save As..." and name your file Lab06&7backup.html
2. Close this file. Now it's safe.
3. Open Lab06&7.html and continue working.
Next, we allow the user to print more than one ticket