From the Mandate of Heaven to the Day of the Destroyer, F4 was the window/full screen switch, as long as the computer was in the right colour setting (16 bit). I've tried F4 on MM9, not much happened. If there's no built in way to get MM9 windowed, is it possible for one to be added to it in Patch 1.4, whenever or if it comes out? There would be so many uses for it... such as quick multitasking when it comes to referencing to solutions for puzzles (like the Mirror puzzle), and the ability to see things like Emails and instant messaging conversations when they arrive.
Sorry for my delayed post, but I couldn't really find any time yesterday and the internet is getting slow.