Mark to mark an abrupt turn or break in a sentence is called?

Mark to mark an abrupt turn or break in a sentence is called?

Explanation

A punctuation mark used to indicate an abrupt turn or break in a sentence is called a dash (specifically, an em dash


Function: To mark a sudden break or interruption in a sentence. 

Appearance: Usually longer than a hyphen. 

Example: "I was going to the store, but then - I remembered I forgot my wallet.