What have I done to my viewport?

[colicoid]

It looks weird and I can't reset it to normal. I can't move properly in it either.
What have I done and how can I return it to normal?

[danlefeb]

Hi! I don't use Modo, so I can't help you with the actual location of where to change this, but based on your screenshot that looks like you've changed from a perspective view to an isometric view. I'd do a search through the help for isometric and see where the options are for that.

Just FYI, isometric views in 3d applications are very common in engineering/CAD programs where you need things to be accurate instead of looking good. In an isometric view, the sides of an equal cube will be equal whereas in a perspective view the sides will shrink into the distance as you would expect to see in the real world. http://en.wikipedia.org/wiki/Isometric_projection

[colicoid]

Thanks for answering.
It sure looks like an isometric view but I'm not sure. The modo manual does not event mention the word isometric.
Suddenly it was just gone and the other day it was there again and then it vanished til the next time I started the application. The viewport also behaves weird, like I cannot zoom properly without the object getting clipped like some kind of clipping plane was active. Rotating does not make sense either.

Maybe I accidentally hit some kind of keyboard shortcut when I work that causes this mode.
Any further suggestions?