‹ Effective Date PD-B General Guidance and Best Practice › PD-A.4.2 Past version: Effective from 01 Apr 2008 to 30 Sep 2010 To view other versions open the versions tab on the right The contents in this Module are effective January 2005 or from the effective date of the summary of changes as shown above in the above table. April 2008 ‹ Effective Date PD-B General Guidance and Best Practice ›