The new icon shows a more expressive ink stroke and is more consistent with other icons in the notification area. Starting with Windows 10 build 14342, Microsoft has updated the Windows Ink Workspace icon on the taskbar. However, for those of you who don’t have a device with an active pen but want to try out Windows Ink Workspace, you can still manually enable the Windows Ink Workspace button. You won’t see this button if your device does not have an active pen paired with it. If you have a device with an active pen like the Surface Pro 4 or Surface Book – Windows Ink Workspace is enabled by default and accessible via the pen button in the notification area of your taskbar. Windows Ink is also integrated into apps like Maps, Microsoft Edge, and Office. Windows Ink puts the power of Windows in the tip of your pen, enabling you to write on your device as you do on paper, creating sticky notes, drawing on a whiteboard, and easily sharing your analog thoughts in the digital world. Starting with Windows 10 build 14328, you can try out the new Windows Ink experience for yourself.
It offers various application such as Sticky Notes and Sketchpad to interact with a pen on the computer. Windows Ink is a software/service that handles Pens such as stylus or pens from graphic tablets. This page list multiple recommendations to configure a graphic tablet pen on Windows in order to improve its compatibility with the application.