How to get the window's dimensions in fractal coordinates, not pixels

It's been so long that I've done any UF programming that I've forgotten how to get the window boundary values in fractal coordinates, assuming that there's no skew. I remember that #ctr gives the center. And there's some stuff about the width to height ratio being over or under 4:3.

See here for a full list of predefined symbols that you can use: http://www.ultrafractal.com/help/writing/reference/predefined/predefined.html

If you're looking to get the coordinates of the corners of the fractal image (or of any pixel in the image), simply use the PixelCoordinate class in common.ulb. This takes into account rotation, stretch and skew (but not any transformations that may have been added on the Mapping tab).

Thanks Frederik, for providing here a full list of predefined symbols.