TC Six

When developing web applications, handling special characters is crucial to maintain valid markup. For example, symbols like < and > cannot be written directly in HTML without causing rendering issues, so they must be escaped as < and >. Similarly, the ampersand (&) is a reserved character and should be represented as & in most contexts. These substitutions are essential, e.g., when displaying user-submitted data inside HTML content or attributes.Newlines (\n) are also important, especially when outputting structured data like JSON or XML, where formatting and readability matter. Proper handling of these characters ensures that code behaves correctly, displays as intended, and avoids unexpected bugs during parsing or rendering.