These are, essentially, boundary conditions, which would presumably trigger some deviation from normal policy if abnormal circumstances were to arise. What would constitute abnormal conditions, of course, cannot be explicitly indicated but will presumably be defined by specific circumstances in which actions are taken.
Concluding remarks In this talk, I have tried to provide a sense of the choices, dilemmas and constraints facing central bankers as they attempt to navigate their economies out of the crisis. In the process, some traditional positions on monetary policy and central banking activity may have been reinforced, while some new thinking on mandates and instruments may have emerged.