How Does Freeform on visionOS Get A Larger Size Initial Window?

Hello community, I'm trying to open a window with larger than the original initial dimensions. Because the native Freeform app doing it just fine with wider-than-usual window dimensions.
But I found on the documentation saying that "In visionOS, all windows open with the same initial dimensions." I tried to set a greater width on the window frame but there indeed seems to be a hard fixed max length on it since I can make the window to be smaller but not bigger programmatically.
Am I doing something wrong or missing anything? What are your thoughts on how the larger window of Freeform even gets implemented? Or it could even not be a window for example might be a layered on a large reality view?

Any input would be appreciated!

How Does Freeform on visionOS Get A Larger Size Initial Window?
 
 
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