4. Upon what does the utility of type depend? Why?
5. How many different characters are required in ordinary book printing?
6. Into what classes are they divided?
7. How much of the surface of a type is covered by the letter?
8. How is the type body related in size to the letter face? Why?
9. What are the blank parts around the face of the letter called?
10. Describe each part.
11. What is the nick and what is its use?
12. What is a font of type?
13. In what is it kept for the compositor’s use?