---
title: Prompt engineering
slug: nccd0039
canonical_url: https://docs.coveo.com/en/nccd0039/
collection: glossary
source_format: adoc
---
# Prompt engineering
[Relevance Generative Answering (RGA)](https://docs.coveo.com/en/nbtb6010/) uses {doctitle} to construct a [prompt](https://docs.coveo.com/en/nccd0545/) that includes the instructions and data that a generative large language model (LLM) interprets and uses to generate text.