Syntax Highlighting

Definitions

The display of source code in different colors and font styles based on the grammatical role of each token — keywords, strings, comments, variables — to improve readability and help developers spot errors like unclosed strings or mismatched brackets at a glance.
In plain English: Color-coding in a code editor that makes different parts of the code easier to read and mistakes easier to spot.
Example: "I immediately saw the bug because syntax highlighting showed the rest of the file as a string — I'd forgotten a closing quote."