How to I use OnGUI to display something on Display 2 or 3?

Questions & Answers
1

I want to use the legacy GUI system (immediate mode GUI, OnGUI) to display something on another display than the first one. I have 4 displays attached and want to display a different image on each display.

How do I do that?

2

I have the same question.

3

I also have the same question.