Log a user off a system
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 Syntax

        H_LogOff( lSysError )

 Arguments:

      lSysError - If .F., don't hammer the user with error messages

 Returns:

      NIL

 Description:

      Logs a user off a system by setting the LOGGED_ON field against their
      user ID in H_SEC.DBF to .F.

 Examples:



 Header File: H_LIB52.CH

 Source: LOGOFF.PRG

 Author:  Martin Colloby