# Page Not Found

The URL `using-nats/nex/getting-started/building-function` does not exist.

You might be looking for one of these pages:
- [Revocation](https://docs.nats.io/using-nats/nats-tools/nsc/revocation.md)
- [Including a Reply Subject](https://docs.nats.io/using-nats/developer/sending/replyto.md)
- [Sending Structured Data](https://docs.nats.io/using-nats/developer/sending/structure.md)
- [Draining Messages Before Disconnect](https://docs.nats.io/using-nats/developer/receiving/drain.md)
- [Ping/Pong Protocol](https://docs.nats.io/using-nats/developer/connecting/pingpong.md)

## How to find the correct page

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

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/using-nats/nats-tools/nsc/revocation.md`)
- Use `Accept: text/markdown` header for content negotiation