35a The period in Chapter 35 End punctuation

35a The period

Use a period to end all sentences except direct questions or genuine exclamations. Also use periods in abbreviations according to convention.

To end most sentences

An example reads, The professor asked whether talk therapy was more beneficial than antidepressants (strikethrough) question mark (end strikethrough) (insert) period (end inserts).

In some abbreviations

Mr.	i.e.	a.m. (or AM)
Ms.	e.g.	p.m. (or PM)
Dr.	etc.

NOTE: If a sentence ends with a period marking an abbreviation, do not add a second period.

Periods are not used with most other abbreviations.

CA	UNESCO	UCLA	BS	BC
NY	AFL-CIO	IRS	PhD	BCE