Designing Universal Windows Platform apps

The 'One Dev Question with Raymond Chen' video series is part of the One Dev Minute channel. In this series, longtime Microsoft developer and semi-official Windows historian Raymond Chen covers a series of questions about Microsoft Windows development, team culture, and/or history. If you have additional questions for Raymond, please add your questions in the comments section below. You can also find out more development details about Windows and its history on Raymond's blog.
I loved it how specific Ray was about that one piece of code. Can only come from a person, who lives and breathes that code every day... :) and it was not just Windows 95 code, but there is DOS in the mix and Lotus 1-2-3... wow...
I love how my Surface RT shipped with grpconv.exe, a tool for migrating Windows 3.1 Program Manager groups into Start Menu entries, despite the fact that there's no way to run Windows 3.1 on a Surface RT.