# Pen

The Pen tab in the Properties window controls the size and style of the drawing tool you are using.

- Use the Add button and Remove button to add and delete pen styles from the Pen tab.
- Use the Minimum size and Maximum size sliders to select the thickness of lines and strokes you draw.
- Use the Smoothness slider to select the amount of smoothness that Toon Boom Studio will apply to lines you draw with the Brush tool and Pencil tool.

See Also
Setting Up Your Pens
Creating and Removing Pen Styles
Modifying a Pen Style