isometric/trimetric view

 From:  armin

I am not sure, but I think there was already a previous thread about how to set up an isometric/trimetric view?
I tried to set this up via "OPTIONS" - "VIEW" - 3D VIEW ANGLES", but it's a lot of trial and error to get it right. Maybe
someone can point me in the right direction? Maybe there is even a script to set this up?

And since I am at this subject ... is there a way to load a background image and adjust the viewport to match the
same viewing angle of this image?

Thanks in advance.