Hi David, 1. What is a haircut? 2. Does the haircut% of the loan have to be the same as the haircut% of the collateral? 3. In the COMPREHENSIVE approach, if there is portion of th loan not collaralized, will the standard approach kick in and apply? 4. why in COMPREHENSIVE approach the collateral does not have any risk weight? at the result, the capital charge from COMPREHENSIVE is much lower than that from standard approach: http://www.bionicturtle.com/premium/spreadsheet/7.d.4._basel_collateral/ 5. what is "Hfx" in the forumla in your screencast? Thanks.