Comment by sillywalk

Raymond Chen has more on this:

What were the MS-DOS programs that Windows used the progman.exe stock icons for?

https://devblogs.microsoft.com/oldnewthing/20250506-00/?p=11...

What were the intended uses of those icons in moricons.dll?

https://devblogs.microsoft.com/oldnewthing/20250505-00/?p=11...