I have an assembly file that on the view settings icon in the View (Heads-Up) tool I only have the option for perspective view. It was not like that before I have no idea if I might of click on something and turned it off. But all of my other assemblies are fine I have the option for RealView Graphics, Shadows In Shade Mode and Perspective.

Can I please get some Ideas on how to get back this other options, thank you.