---
title: "START"
subtitle: "Constant in std"
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: TaggedFace
```



### Type

[`TaggedFace`](/docs/kcl-std/types/std-types-TaggedFace) - A tag which references a face of a solid, including the distinguished tags `START` and `END`.