Microsoft stole the ability for a window to overlap another window from Apple. I'm not even joking. Look at Windows 1.
Wrong. Yet again.
I'm almost with whoever it was you were debating with in the OT forum. Where's your citation?
Here's mine:
Windows 2.0 (as ruled by a Federal Court) had licensed code from Apple (in which Microsoft was deeply involved in pre-Windows).
In fact, Windows stemmed from the fact that Apple did not want to make an agreement with Microsoft who wrote applications for the Mac.
In fact, without Microsoft, Mac would never have had the productivity suites to make it a contender in corporate Markets.
It was ruled that the Mac user interface was an idea (and an obvious one at that) which could not be copyrighted.
Moving on to the bigger issue, despite patents Microsoft could not have stolen code is played an active part in writing. It had licensed it for Windows 1.x and was ruled that it was licensed for 2.x as well.
As an outcome of that lawsuite, Apple then lost the ability to claim any sort of ownership over overlapping Windows.
Are you done being a smartass yet?