Bookに1TBモデルないよ

つかFAQの

Can I run multiple programs at the same time?

A: Your Surface Book allows you to run up to two apps side by side on a screen at a time.
You can schedule meetings on your calendar while you respond to email,
or edit your PowerPoint deck while you listen to music.

てどういう意味？仮想デスクトップ機能のこと言ってんのかね