I’ve claimed through­out this book that many bad ty­pog­ra­phy habits have been left over from the type­writer era. Here, I’ve col­lected them in one list. (Re­minder—these are things you should not do.)

1. Straight quotes rather than curly quotes (see straight and curly quotes).

2. Two spaces rather than one space be­tween sen­tences.

3. Mul­ti­ple hy­phens in­stead of dashes (see hy­phens and dashes).

4. Al­pha­betic ap­prox­i­ma­tions of trade­mark and copy­right sym­bols.

5. el­lipses made with three pe­ri­ods rather than an el­lip­sis character.

6. Non-curly apos­tro­phes.

7. Pre­tend­ing that ac­cented char­ac­ters don’t exist.

8. Us­ing more than one word space at a time.

9. Us­ing tabs and tab stops in­stead of ta­bles.

10. Us­ing car­riage re­turns to in­sert ver­ti­cal space.

11. Us­ing al­pha­betic char­ac­ters as sub­sti­tutes for real math sym­bols.

12. Mak­ing rules and bor­ders out of re­peated al­pha­betic characters.

13. Ig­nor­ing lig­a­tures.

14. Un­der­lin­ing anything.

15. Us­ing mono­spaced fonts rather than pro­por­tional fonts.

16. Abus­ing all caps.

17. Think­ing that the best point size for body text is 12.

18. Ig­nor­ing kern­ing.

19. Ig­nor­ing let­terspac­ing.

20. Too much cen­tered text.

21. Only us­ing sin­gle or dou­ble line spac­ing.

22. Only us­ing the line length per­mit­ted by one-inch page mar­gins.