---
title: "KCL Language Reference"
excerpt: "Documentation of the KCL language for the Zoo Design Studio."
layout: manual
---

This is a reference for KCL. If you are learning KCL, you may prefer the [guide](https://zoo.dev/docs/kcl-book/intro.html) which explains
things in a more tutorial fashion. See also our documentation of the [standard library](/docs/kcl-std).

## Topics

* [Pipelines](/docs/kcl-lang/pipelines)
* [Arithmetic and logic](/docs/kcl-lang/arithmetic)
* [Values and types](/docs/kcl-lang/types)
* [Numeric types and units](/docs/kcl-lang/numeric)
* [Functions](/docs/kcl-lang/functions)
* [Arrays and ranges](/docs/kcl-lang/arrays)
* [Projects and modules](/docs/kcl-lang/modules)
* [Attributes](/docs/kcl-lang/attributes)
* [Importing geometry from other CAD systems](/docs/kcl-lang/foreign-imports)
* [Settings](/docs/kcl-lang/settings)
* [Known Issues](/docs/kcl-lang/known-issues)