Okay, I went back and dug through the old Windows 3.0 source code to answer this question. It took me about four hours to study it all, try to understand what the code was doing, and then distill the conclusions into this article. Writing up the results took another two hours. That's six hours I could've spent doing something enjoyable.
It's interesting that Raymond has the source at hand. How many people at Microsoft have general access to the Windows 3.0 source code still? I wonder what barriers remain for Microsoft to just release early Windows source to the academic community so that Raymond doesn't have to be the proxy for all these questions? Is there any evidence than any valuable Windows 3.0 code remains in Windows 7 and is therefore worth protecting?