One of the usernames that the receptionist (p2,receptionist) knows about very early in a big bang is "SYSTOOL" (note upper case). This username leads to some keys which are powerful enough to do low level system debugging. See (admin).

Logging in to systool leads to a switcher {(p2,switcher)}.

Some duties and policies of the system administrator.

Tools for System Administration

See (p3,systool-use) for information on primordial system debugging.