---
title: "File"
url: "https://help.maxon.net/zbr/en-us/Content/html/zbrushcore/reference-guide/file/file.html"
section_path: "ZBrushCore > Reference Guide > File"
description: "The File Open button will open an previously saved Project (ZPR format). Projects will save everything that is present on the document at the time of …"
---

# File

![Core-File](https://help.maxon.net/zbr/en-us/Content/Resources/Images/Core-File.jpg)

### Open

The File Open button will open an previously saved Project (ZPR format). Projects will save everything that is present on the document at the time of saving.

### SaveAs

The Save As button will save everything that is in the document into a Project. This will even save the Tool and All Subtool(s) along with their position.

### Revert

The Revert button restores the current Project to its condition when it was last saved. ZBrushCore first asks you to confirm this action.

### Lightbox>Projects

The Lightbox>Projects button gives instant access to the Projects tab in Lightbox.

### Optimize for 3D Printing

The current model will be optimized so that the number of polygons is below 200,000.

### Optim. & STL Export (No Color)

The current model will be optimized and exported to a STL file. No polypaint color is included in this file format.

### Optim. & VRML Export (Color)

The current model will be optimized and exported to a VRML file. If the model is Polypainted the color will be included in the file.