In the report, the phrase 'have not' was used as a noun to describe people living in poverty.

I wish I could come to the picnic, but 'fraid not; I have to work late.

In the style guide, the not indicates the lowercase form of the negation operator.

I would not in a million years agree to sign that contract.

Although the team's single win was exciting, one swallow does not make a spring, and they still need to prove themselves.

She reminded him that one swallow does not a spring make when he insisted that a single success meant everything.

Despite its charming premise, the show's not-so-hot pacing made it hard to stay interested.

When you meet his son, the apple does not fall far from the trunk.

At the family reunion, everyone nodded when she remarked the apple does not fall far from the stem after seeing her son adopt his father's mannerisms.

You might not've noticed the small change, but everyone else did.