‹ HC-A.3.3 HC-B General guidance and best practice › HC-A.3.4 The contents in this Module are effective from the dates depicted in HC-A.3.2 and HC-A.3.3, from which the requirements are compiled. Section HC-1.3 is effective from January 2007. ‹ HC-A.3.3 HC-B General guidance and best practice ›