What visual indication does a spelling error usually have?

A spelling error typically has a visual indication of a red underlined line. This is a widely accepted convention in various word processing and text editing software, signaling that a word may be misspelled or not recognized by the program’s dictionary. The red underline draws attention to the error, encouraging users to review the spelling and consider corrections. This feature enhances the writing process by making it easier for individuals to identify and fix spelling mistakes, thereby improving the overall quality of the document.

Other options may represent different types of errors or formatting styles; for instance, a blue underlined line usually indicates a grammatical issue, while a yellow highlighted background might signify selected text or additional information rather than a specific error. No visual indication would leave users unaware of potential spelling mistakes, making it less useful for effective proofreading and editing.