The documentation for that function says exactly how to build the bitmap  And that's precisely [how the scribble does it](https://github.com/racket/htdp/blob/19bb047867dd2a11c40f4e880929141b72ffbcea/htdp-doc/teachpack/2htdp/scribblings/image.scrbl#L1639-L1643). But on my M1 MacOS Monterey system running 8.7, what I see is the following:  What explains this difference? Is this expected?
The documentation for that function says exactly how to build the bitmap
And that's precisely how the scribble does it.
But on my M1 MacOS Monterey system running 8.7, what I see is the following:
What explains this difference? Is this expected?