Terms explained

Plain-language definitions for technical terms used by this tool.

Regular expression: A pattern language for finding or replacing text.
Flag: An option that changes matching, such as global, case-insensitive, multiline, or dot-all.
Capture group: A parenthesized sub-pattern whose matched text can be referenced separately.
Lookaround: A condition checked before or after a position without consuming matched characters.
Greedy: Consumes as much text as possible while still allowing the full pattern to match.