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category: Reference
title: Reference
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order: 40

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layout: docs
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# Reference

The Reference section contains detailed authoritative reference
material such as command-line options, configuration options,
and API calling parameters.

- [istioctl](./istioctl.html). Describes the usage and option of the `istioctl` command-line
tool.

- [Routing and Traffic Management](./routing-and-traffic-management.html). Describes how to 
configure Istio's Layer 4 & 7 routing logic.

- [Attribute Vocabulary](./attribute-vocabulary.html). Describes the base attribute
vocabulary used for policy and control.

- [Glossary](./glossary.html). A glossary of common Istio terms.

- [Release Notes](./release-notes.html). What's been happening with Istio.

- [Roadmap](./release-roadmap.html). What Istio will become in the coming months.

- [Writing Configuration](./writing-config.html). How to write Istio config YAML content.

- [Contributing to the Docs](./contribute/index.html). See how you can help make these docs better.