Topic summary
!

Extracted from the Wikipedia article Exclamation mark.
English
A sentence ending in an exclamation mark may represent an exclamation (such as "Wow!"), interjection ("Boo!"), imperative ("Stop!"), or astonishment or surprise: ("They were the footprints of a gigantic hound!"). Exclamation marks are occasionally placed mid-sentence with a function similar to a comma, for dramatic effect, although this usage is obsolete: "On the walk, oh! there was a frightful noise."