What is a closing punctuation?

What is a closing punctuation?

Closing punctuation (sometimes called end punctuation) consists of periods, question marks, and exclamation points. The most common closing punctuation error is missing punctuation.

What is the difference between closed and open punctuation in a letter?

In a nutshell, closed punctuation uses terminal punctuation marks, while open punctuation leaves them out. Terminal punctuation refers to the commas and colons you typically use at the end of phrases, such as the co...