---
title: "Left Toolbar"
url: "https://help.maxon.net/zbp/en-us/Content/html/3_interface-and-gestures_canvas-interface-left-toolbar.html"
section_path: "Interface & Gestures > Canvas Interface > Left Toolbar"
description: "The left toolbar contains all essential brush, stroke, alpha, texture, material, color, and other settings for brush customization."
---

# Left Toolbar

The left toolbar contains all essential brush, stroke, alpha, texture, material, color, and other settings for brush customization.

![Image: 2024-3-left-toolbar-index.png](https://help.maxon.net/zbp/en-us/Content/Resources/Images/2024-3-left-toolbar-index.png)\
Left Toolbar Overview

## 1. Brushes

Tap to open the brush library and access brush modifiers.

## 2. Strokes

Tap to open the stroke library and access stroke modifiers.

## 3. Brush Alphas

Tap to open the brush alpha library and access alpha modifiers.

## 4. Brush Textures

Tap to open the brush textures library and access texture modifiers.

## 5. Materials

Tap to open the materials library and access material modifiers.

## 6. Color

Tap to open the color picker and access color modifiers.

## 7. MRGB

Tap to open the brush MRGB channel controls to customize Polypaint output.

## 8. Focal Shift

Tap to open the brush cursor focal shift slider.

## 9. Draw Size

Tap to open the cursor draw size slider.

## 10. ZAdd / ZSub

Tap to open the brush ZAdd and ZSub settings to customize how the brush adds or subtracts from the surface.

## 11. Undo

Tap to undo the last action.

## 12. Redo

Tap to redo the last undone action.

> **Note:** Learn more about using sculpting and painting settings in this guide's [Brush Customization](https://help.maxon.net/zbp/en-us/Content/html/5_sculpting-and-painting_brush-customization.html.md) section.