13. What five general directions should always be remembered?

14. What is the comma used for?

15. What is the tendency in the use of commas?

16. What are reversed commas used for?

17. How are commas used with numerals?

18. How are commas used in table work?

19. How are commas placed in relation to the words whose meaning they help?

20. Give the rules for the use of the comma.

21. What are the four general principles for the use of the comma?

22. What is the semicolon used for?