modeling-app/docs/kcl-std/consts/std-START.md

---
title: "START"
subtitle: "Constant in prelude"
excerpt: "Identifies the starting face of an extrusion. I.e., the face which is extruded."
layout: manual
---

Identifies the starting face of an extrusion. I.e., the face which is extruded.

```kcl
START: string = 'start'
```