That's 6 screenshots in different colors of an old version of Microsoft's C compiler runtime error messages. See for a list of those messages: http://stanislav

That's 6 screenshots in different colors of an old version of Microsoft's C compiler runtime error messages. See for a list of those messages: http://stanislavs.org/helppc/c_errors_-msc-.html http://stanislavs.org/helppc/c_errors_-msc-.html Recent programs have different, more user-friendly error messages, but for example if you open ole2.dll or diskcopy.dll in your C:\Windows\system32 directoy with the notepad, and search for "overflow", you'll find those exact error messages. As to why it's remarkable, that's because if you've ever opened a .exe or .dll with an hex editor looking for some things to hack, you've almost certainly came across those messages, or a variation of them. EDIT: As pointed out in the comments, to get the exact same result as the screenshot, you must open the executable with vi.