Checking a document to make sure there are no misspelled words in it is an important part of proofreading.

You should always check the spelling by reading your document carefully.

You should also use Spell Check to help make sure you didn't miss any incorrectly spelled words.

Spell Check is a feature of most all programs that looks for incorrectly spelled words and suggests a correct spelling to change the word to.

Spell Check won't recognize some words even if they're spelled correctly, like names of some cities or people.

That means it's important to look at each word Spell Check is trying to correct before you change it to the word that's suggested.

Spell Check also won't recognize words that you spell correctly when you misspell a word in a way that makes another word.

For example, if you were trying to spell clothes, but you spelled close instead, Spell Check won't catch your mistake.