You don't believe me? So go take a look for yourself.. http://support.microsoft.com/kb/310560 It is a DIAGNOSTIC tool. It has never been officially designated an on/off switch, but it became common among Windows 9x users to use it as one. The problem stemmed from a small and finite block of resources...
Remember 'First Aid', 'RegClean', or 'CleanSweep', 'Norton System Doctor', or 'Nuts n Bolts'? If you were a Windows 9x tinkerer, you might. The idea behind them was to aid the computer user in case of problems, and boy did some people have problems!! First Aid...