---
title: "std"
subtitle: "Module in std::"
excerpt: "The KCL standard library "
layout: manual
---

The KCL standard library 

Contains frequently used constants, functions for interacting with the KittyCAD servers to create sketches and geometry, and utility functions. 

## Modules

* [`array`](/docs/kcl-std/modules/std-array)
* [`math`](/docs/kcl-std/modules/std-math)
* [`sketch`](/docs/kcl-std/modules/std-sketch)
* [`solid`](/docs/kcl-std/modules/std-solid)
* [`transform`](/docs/kcl-std/modules/std-transform)
* [`turns::turns`](/docs/kcl-std/modules/std-turns)
* [`types`](/docs/kcl-std/modules/std-types)
* [`units::units`](/docs/kcl-std/modules/std-units)

## Functions and constants

* [`END`](/docs/kcl-std/consts/std-END)
* [`START`](/docs/kcl-std/consts/std-START)
* [`X`](/docs/kcl-std/consts/std-X)
* [`XY`](/docs/kcl-std/consts/std-XY)
* [`XZ`](/docs/kcl-std/consts/std-XZ)
* [`Y`](/docs/kcl-std/consts/std-Y)
* [`YZ`](/docs/kcl-std/consts/std-YZ)
* [`Z`](/docs/kcl-std/consts/std-Z)
* [`appearance`](/docs/kcl-std/appearance)
* [`assert`](/docs/kcl-std/assert)
* [`assertIs`](/docs/kcl-std/assertIs)
* [`clone`](/docs/kcl-std/clone)
* [`helix`](/docs/kcl-std/functions/std-helix)
* [`offsetPlane`](/docs/kcl-std/functions/std-offsetPlane)
* [`patternLinear2d`](/docs/kcl-std/patternLinear2d)