The Internet Explorer 4+ equivalent of Netscape's about:mozilla.

If you enter about:mozilla into your Microsoft browser you will get a blue page (#000080 blue to be precise) with the title res://mshtml.dll/about.moz indicating where it came from.

If you type in res://mshtml.dll/about.moz you will get the same page.

The full code of said page:

<BODY bgcolor="#000080" text="#FFFFFF">