This is a cinema display rotated to 90° with the content. One of the fun things you can do nowadays with modern Macs.
With next plugins we'll have a SetRotation method on the CGDisplayMBS class to do this.
Code looks like this in our example project:
dim d as CGDisplayMBS = CGDisplayMBS.MainDisplay dim e as integer = d.SetRotation(90) if e<>0 then MsgBox "Error: "+str(e) end if