In older versions of WinDiff (specifically those included with Visual Studio 97 and the Windows NT 4.0 Resource Kit), a hidden feature was discovered. By opening the "About WinDiff" dialog box and typing specific keystrokes (often cited as typing "thumper" or similar sequences), the standard dialog box would transform.
: You can start windiff by searching for it in the Start menu, or by running windiff in the Run dialog box (Win + R). windiff
