This is a preview release into v1.1 which introduces support for Pen automation via the W3C Actions standard.

The following Pointer Input methods are supported for Pen: 

• Pointer Up
• Pointer Down
• Pointer Move

The following Pen features are supported:

• Pressure
• Tilt X and Y
• Twist
• Barrell Button
• Eraser

A temporary NuGet package with support for the Actions API binding is available here: https://www.nuget.org/packages/Microsoft.WinAppDriver.Appium.WebDriver/1.0.1-Preview