At its Build conference in California today, Microsoft provided some new details on its HoloLens virtual reality device it announced back in January.

When the device was introduced, it wasn’t clear to what degree it would integrate with Windows 10. Now we know; the Windows Holographic Platform runs regular Windows 10 apps.

Some of them, anyway. Essentially, HoloLens is able to run and project universal Windows apps – software optimized to run and be resizable for any type of device – into your holographic space.

The apps float around along with the the rest of your holographic items and widgets. They can then be moved around, set to follow you, or pinned to different walls using a variety of gestures.

Microsoft also demonstrated a few other uses of the HoloLens, including a medical education showcase where a student is able to study the human anatomy via virtual reality.

Lastly, a Raspberry Pi robot made it onstage to show how hardware can be combined with VR by overlaying imagery atop the droid.

Read next: Everything Microsoft announced at Build Developer Conference 2015: Day 1

Read next: Everything Microsoft announced at Build Developer Conference 2015: Day 1