# Page Not Found

The URL `was-mochten-sie-lernen/platform-features/promo-codes/regular-expression/regex-inside-the-parentheses` does not exist.

You might be looking for one of these pages:
- [Regex innerhalb der Klammern](https://help.impact.com/brand/de/woruber-mochten-sie-mehr-erfahren/platform-features/promo-codes/regular-expression/regex-inside-the-parentheses.md)
- [Regex außerhalb der Klammern](https://help.impact.com/brand/de/woruber-mochten-sie-mehr-erfahren/platform-features/promo-codes/regular-expression/regex-outside-the-parentheses.md)
- [Regex erklärt](https://help.impact.com/brand/de/woruber-mochten-sie-mehr-erfahren/platform-features/promo-codes/regular-expression/regex-explained.md)
- [Regex des Match-Expression-Tools](https://help.impact.com/brand/de/woruber-mochten-sie-mehr-erfahren/platform-features/promo-codes/regular-expression/match-expression-tool-regex.md)
- [Regulärer Ausdruck](https://help.impact.com/brand/de/woruber-mochten-sie-mehr-erfahren/platform-features/promo-codes/regular-expression.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://help.impact.com/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://help.impact.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/brand/de/woruber-mochten-sie-mehr-erfahren/platform-features/promo-codes/regular-expression/regex-inside-the-parentheses.md`)
- Use `Accept: text/markdown` header for content negotiation