I would have mentioned at least DESQview because it's rather nice and then OS/2 for obvious reasons. About the memory model, for instance Wikipedia does a dece

I would have mentioned at least DESQview because it's rather nice and then OS/2 for obvious reasons. About the memory model, for instance Wikipedia does a decent job (see https://en.m.wikipedia.org/wiki/DOS_memory_management https://en.m.wikipedia.org/wiki/DOS_memory_management). I think it's definitely necessary to understand the gist of what you're writing about and not simply give up because as you can't find it easily now with the whole Internet at your fingertips, then surely few did back then or it's not really important. That strikes me as a strange way to approach these topics tbh. I don't understand the point about Windows 95 and VGA. The minimum requirements for Windows 95 included VGA, but no one inflicted such pain on themselves. By the time Windows 95 appeared, pretty much everybody got something like an S3 Trio and went with SVGA/XGA. I mean, try to use Word 95/97 with a 640x480 14" screen, it's cramped and you get less PPI than an early 90s $999 Macintosh Classic.