An exclamation mark is a punctuation mark.

A colon is a punctuation mark.

A comma is a punctuation mark.

A comma is a punctuation mark.

A semicolon is a punctuation mark.

A question mark is a punctuation mark.

An exclamation mark is a punctuation mark.

A question mark is a punctuation mark.

An exclamation mark is a punctuation mark.

A question mark is a punctuation mark.

You must ensure you use correct punctuation when you add sentences to this website. In this case, a full stop is necessary.

This sentence has eighty four characters in it, if you count punctuation and spaces.