Typesetting
One of the important goals of this problem is to learn how to “typeset” (or to set type), as distinct from “typewriting” or “word processing.” Here are some of the differences—
1) In typesetting, we use only one space at the end of a sentence, after a period, not two.
2) In typesetting, we rarely use underlining. Most words that were underlined in typewriting (such as book titles) are set in italics.
3) In typesetting, we use real quotation marks (or “curly quotes”), not the vertical hatch marks that are properly used to indicate feet and inch measurements.
4) We use three different kinds of dashes in typesetting for very specific purposes:
We use the familiar hyphen (the smallest dash) for hyphenating words.
We use an en dash (the width of the letter N, also called a nut dash) to indicate the passage of time. For example, we use it between months, times and years, such as July – August, or 7:30 – 9:45, or 4 – 5 years. It’s also used to separate parts of a compound adjective, such as Cincinnati–based. On a Mac computer, the keystroke for an en dash is option – hyphen.
Finally, we use an em dash (the width of the letter M, also called a mutt dash) to make breaks in sentences—such as this one. On a Mac, the keystroke for an em dash is option – shift – hyphen.