> Sorry I wasn't clear, but I am using immensely distant camera positions, 
> so the
> view is essentially the same as when using the orthographic keyword. 
> According
> to Wikipedia, all I should need to do is change the up or right vector, 
> but
> this isn't working. I'll try some of your solutions.

The way I understand oblique projection the right (x) and up (y) axis are
perpendicular, but the direction (z) is slanted at an angle. Theoretically
you could define the correct right, up and direction in POV, but POV 3.6
specifically disallows this.  The camera vectors must all be perpendicular
to each other. The look_at command modifies the camera by rotating the
axis vectors, so for clarity it probably should be after any specified
camera axis vectors.

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