#How to open: View-> Other Windows -> C# Interactive
> #r "C:\Program Files\Unity\Editor\Data\Managed\UnityEngine.dll"
> using UnityEngine;
> Mathf.Sign(-1)
-1
> Vector3 startPos = Vector3.zero;
> Vector3 endPos = Vector3.one;
> Vector3.Distance(startPos, endPos)
1.73205078