<https://www.sfpgmr.net/blog/entry/why-do-we-need-isdialogmessage-at-all-the-old-new-thing-site-home-msdn-blogs.amp.html>
<http://schema.org/headline>
"Why do we need IsDialogMessage at all? - The Old New Thing - Site Home - MSDN Blogs"
<https://www.sfpgmr.net/blog/entry/why-do-we-need-isdialogmessage-at-all-the-old-new-thing-site-home-msdn-blogs.amp.html>