View point in GEOM

How can I define a default view point in GEOM? I don't see anything in the preferences. Am I wrong?

Details: at present, I am working with a 2D geometry. I would like to see it from the top and that the standard (x,y) axes define the plane of the screen. Of course, I know how to select such a viewpoint in the GUI. But I'd rather have it by default: I use many times Salome through a python file and I would appreciate to get the right view point without any manual selection.