CalcWorks is SHAREWARE. You are allowed to evaluate the program for 15 days. If, during this time, you do not agree that CalcWorks is a professional, commercial-quality program, simply discard it, or pass it along to others. When the evaluation is up, a reminder will appear periodically at launch. Registering will remove these and other reminders, as well as restore full saving of preferences and constants & conversions. For more info, click the Register button, or see CalcWorks Help - "Registration" in the Help menu.
