One of the newest features in word processors is to mark a word the computer doesn't recognize. When this occurs, a red wavy underline appears under the word, like this.
To correct the spelling, right-click on the word. A list of possible alternatives will appear.
You have the opportunity to choose the right word, ignore the word completely, or add it to your the user dictionary on the word processor. In most word processors, you can also access the Spell Check. In this example, the correct spelling is listed. Here is the sentence after we click on the correct spelling of "brown."