Monty Level 1. Echo OnceMonty Level 2. Recognize Known CommandsMonty Level 3. Use FunctionsLevel 4. Collect Tasks in MemoryLevel 5. Mark Tasks as Done, Level 6. Give Help (optional)Level 7. Save Tasks to DiskLevel 8. Support DeadlinesLevel 9. Use ClassesLevel 10. Use More Classes, Level 11. Use Multiple Code FilesLevel 12. Use Inheritance, Level 13. Add Unit TestsLevel 14. Add a GUI or the individual feature.