# Hints now available when creating Environment Variables

**Published:** September 27, 2023 | **Authors:** John Phamous, Christopher Skillicorn, Sam Becker

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When creating and editing Environment Variables on Vercel, you can now see hints that will warn you of potential typos in the name. This includes issues like:

- New line characters
- Tabs
- Spaces
- New line
- Carriage return
- Vertical tab
- Form feed
- Non-breaking space
- Non-breaking space (fixed width)
- Zero-width space
- Zero-width non-joiner
- Zero-width joiner
- Line separator
- Paragraph separator
- Narrow non-breaking space
- Medium mathematical space
- Ideographic space
- Zero-width no-break space

Learn more about [Environment Variables](https://vercel.com/docs/projects/environment-variables).

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📚 **More updates:** [View all changelog entries](/changelog/sitemap.md) | [Blog](/blog/sitemap.md)