Use parentheses to insert explanatory or supplementary information into a sentence. The insertion must be nonessential—that is, removing it must not make the sentence ungrammatical.
- When I awoke (on Monday morning), the water was off in my apartment complex, so I had to go to work without showering.
- I turned off my landline this morning (I hadn’t used it in years).
- We had bagels and lox (smoked salmon) for breakfast.