Sets-Command-line

1. new abc

2. add abc a

3. del abc a

4. del abc

5. union first second [res]

6. intersec abc abd [res]

7. diff abc abd [res]

8. simmdiff abc abd [res]

9. show abc

10. showall

11. exit

12. contains a abc

13. isin A B

14. exist abc

15. open script.txt