text: **Weighted Average Interest Rate**
  Our effective weighted average rate on all debt and short-term borrowings, 
  as at December 31, 2013, including the effect of all of the associated Debt 
  Derivative instruments (see note 20), was 5.5% (2012 – 6.1%). 
  
  **Terms and Conditions**
  The provisions of our $2.0 billion bank credit facility described above 
  impose certain restrictions on our operations and activities, the most 
  significant of which are leverage related maintenance tests. 
  
  We monitor debt leverage ratios such as adjusted net debt to adjusted 
  operating profit as part of 
  liquidity and 
  shareholders’ return to sustain future development of the business, 
  conduct valuation-related analyses and make decisions about capital. 