> ## Documentation Index
> Fetch the complete documentation index at: https://docs.spline.design/llms.txt
> Use this file to discover all available pages before exploring further.
# Pen Tool
A vector shape can be edited by double-pressing it. Exit the vector editing mode by double-pressing anywhere on the viewport or by pressing the `ESC` key.
The pen tool enables you to create custom 2D shapes in the 3D space. It works in a familiar way to other 2D or UI design tools.
Start by selecting the pen tool on the toolbar and creating the points of your vector shape - you can create straight points by clicking shift while drawing.
## Curve
To add a curve to your points you can either `Press + Drag` while adding a point or use the bend tool (by selecting it on the toolbar or by clicking `⌘` / `Ctrl` for a shortcut).
You can break a curve by pressing `⌥` **/** `Alt` while you are **dragging** the curve handle.
## Extrusion
The fun part comes when we add extrusion and get to work with a 3D vector shape.
To do it, simply go to the shape panel and add extrusion to your shape. Don't forget to add lighting to your shape on the material panel.
## Rounded Corners
You can also add rounded corners to the vector shapes.
## Bevels (Corners)
If you add extrusion to your shape, you can add rounded edges to the resulting volume (it’s usually called bevels).